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JSS122/JFS224 User`s Guide

1. Fibre Channel Dual Port Phys Chan 0 Chan 0 Active Port A Host 0 FC Port 1 Phys Chan 1 lt _ gt b ys Chan Bypass Active A Active A Host 1 FC Port 2 Phys Chan 2 Active A Active Phys Chan 3 Active Kill Unkill Disks Disks amp Presence Phys Chan 0 Active B Host 1 FC Port 1 Phys Chan 1 Active B Active Port B Host 0 FC Port 2 Phys Chan 2 k z Bypass Active B Active Phys Chan 3 Active Controller B Active Active Dual Port Figure C 6 JFS224 active active dual port configuration with two host channels and four back end channels both controllers active Each controller also sends heartbeat messages to its partner controller If a controller does not receive a heartbeat message within a set timeout period it will kill the other controller assuming that it has malfunctioned After killing the other controller it will take ownership of the arrays and will change its second host port to present the defunct controller s identity In this failed over configuration the controller will present its native identity on one host port and the failed over controller s identity on its other host port The controller s host interface impersonates the other s World Wide Name WWN Identifier and other identifiers as appropriate to the current FC topology The arrays native to the controller are presented
2. Phys Chan 0 BHosto FGPonT Active Active Phys Chan 1 Active Phys Chan 2 B Host 1 FC Port 2 Active Active Phys Chan 3 Active Controller B FAILED OVER Figure C 11 JFS224 active passive dual port configuration with two host channels and four back end channels controller A active C 11 JSS122 JFS224 User s Guide Understanding Mirrored Configuration The mirrored configuration feature causes configuration changes to be mirrored to the opposite controller in an Active Active configuration The mirrored configuration is stored in the opposite controller s Flash If a controller fails and is replaced then on boot up it attempts to retrieve its configuration from the opposite controller s Flash The intent is that the user will not need to reconfigure a new controller board when it is used as a replacement If a replacement controller uses its mirrored configuration you will see it print a message during boot saying it s using the mirrored configuration and then it will reboot rebooting is necessary for the mirrored configuration to take effect Here s how the mirrored configuration works in different scenarios m Stand Alone mode The feature is not active m Active Active mode and both controllers are operating normally Each controller uses its own local configuration mw Active Active mode and one controller boots and the other controller does
3. Menu Selection Help Select the backend channel number that you wish to configure Note If the controller is configured to operate in Active Active mode then the channel initiator IDs are not user configurable and are forced to the default values Board Temp 79 F 26 C FAILED OVER Cntlr A Mon Sep 17 15 28 33 2001 JSS122 JFS224 User s Guide 3 Select the channel you want and press Enter The Bus Speed screen displays The current setting has an next to it Bus speed 16 MB second 80 MB second 46 MB second Disk Config w f Percent y Priority Mute Conf iguration e Defaults Menu Selection Help Select the maximum bus speed fA slower bus speed may be helpful when enclosure hardware is not capable of supporting the default speed WARNING If you have drives that are not Ultra 166 capable and you experience disk channel problems then set the bus speed to 8 Mb s Not all pre Ultra 16 drives can handle the Ultra 16 bus speed negotiation Board Temp 79 F lt 26 C FAILED OVER Cntlr A Mon Sep 17 15 28 45 2061 4 Select the setting you want and press Enter The Disable Domain Validation screen displays The current setting is marked with an next to it ent rity guration ults Menu Selection Help Use this option to disable SCSI Domain Validation It is used to determine a reliable data transfer rate between the controller and a di
4. Group Field What displays Field What displays CAPI Version Version of the Configuration Application Programming Interface FC LIB Version Version of the FC software SEP Poll Rate Number of seconds as set in Temperature ON or OFF as set in Disk the Disk Array Administrator Array Administrator software software Slot flags ON or OFF as set in Disk Global Flags ON or OFF as set in Disk Array Administrator Array Administrator software software To display hardware information only 1 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays Array Menu Add an Array Delete an Arr Pool Spare Me Display Drive All Partition ystem Menu tilities Menu Rescan Hot Swap Pause Hardware Information LUN Information Drive Utilities Menu Overall Statistics Engineering Menu Menu r Menu t Menu Selection Help Tell the controller to probe all backend channels for new or removed drives Use this option when installing or removing drives If using an enclosure with a SEP the rescan will be done automatically removed drives are found immediately but new drives take 3 minutes A manual rescan temporarily suspends all host I 0 processing until all drives are found and spun up Board Temp 739P 23 C A A MODE Controller A Mon Nov 2 Select Hardware Information and press Enter The Hardware Information screen displays Displays a To
5. Menu Selection Help Enter the number of megabytes MB gt you wish to add to the selected partition The menu displays the number of MB remaining in the free area the maximum number of MB that can be added and the total new size of the expanded partition These values are updated on the fly as digits are entered Board Temp 77 F 25 C FAILED OVER Cntlr A Mon Sep 17 15 36 24 2601 3 Enter the size you want to make the partition and press Enter You can only expand a partition into contiguous free space that follows the partition For more information see Understanding Partitions on page 4 26 The system confirms that you want to make the change 4 Select Yes and press Enter 4 33 JSS122 JFS224 User s Guide 4 34 Changing a Partition Name You can change the name of a partition This does not affect the target ID or LUN values of the partition The controller does not allow you to change a partition name when a utility is running To change a partition name 1 Display the partition menu From the Array Menu 1 o From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays Select the array you want and press Enter The array menu displays Select Partition Menu and press Enter The Select Partition screen displays with a list of existing partitions for the current array Select the partition you want and
6. Configuring the Controller Table 7 2 describes the operating modes and which models they are available for Table 7 2 Operating mode settings Host channel setting Active Active Single Port Models available JSS122 and JFS224 Description This option allows the controller to operate as one of two controllers in an active active pair Active Active mode allows two controllers to cooperate in system operation in a fault tolerant manner If one controller fails while in Active Active mode the other controller assumes its activities allowing host access to continue For more information about Active Active mode see Appendix C Theory of Operation When both controllers are online each controller presents its LUNs on only one port Stand Alone Dual Port JSS122 and JFS224 This option allows the controller to operate with two host ports In this mode the same LUNs display on the two separate host ports Stand Alone Dual Port mode allows the host to achieve greater throughput by balancing I O operations across the two host ports Host port fault tolerance is also achieved because the host can continue to access the controller if one host channel fails For more information about Stand Alone mode see Appendix C Theory of Operation Stand Alone Single Port JSS122 This option allows the controller to operate with one host port and three disk channels Select Stand Alone Single Port mode if you do not wan
7. Figure C 16 JSS122 active active single port single host single cable configuration In the following configuration a single host with two SCSI ports is connected directly to the JSS122 controller in the active active controller pair This configuration yields higher performance than a single host cable as shown in the figure above Enclosure Controller A Host PC Dual Port SCSI HBA Figure C 17 JSS122 active active single port single host dual cable configuration C 18 Theory of Operation In the following dual host configuration one SCSI port from each host is connected directly to the JSS122 controller in the active active controller pair As an active active controller the JSS122 only represents any given array LUN on either host port 0 or host port 1 In this configuration each host can only access arrays mapped to the SCSI port that it is connected to This configuration will not allow each host to share the other s data Enclosure Host PC roller A Host PC Figure C 18 JSS122 active active single port dual host dual cable configuration In the following two way host cluster configuration two SCSI ports from each host are connected directly to the JSS122 controller Each host in the two way cluster can access all arrays from both SCSI ports This provides a high availability high performance system configuration Enclosure Controller A Host PC Figure C
8. Humidity 10 to 85 noncondensing operating 5 to 90 noncondensing nonoperating Air flow 10 0 cubic ft mi CFM JSS122 JFS224 User s Guide Voltage and Temperature Monitoring VCC 5 0 Vdc voltage monitoring 4 67 Vdc 4 75 Vdc 5 0 Vde 5 325 Vdc 5 5 Vdc lt eee Sait eC H Shutdown Warning Normal Warning Shutdown E 5 0 6 5 4 75 Vdc to 5 325 Vdc normal operation E 6 5 10 0 4 67 to 4 75 Vdc and 5 326 to 5 5 Vdc warning range warning alert E gt 6 5 gt 10 lt 4 67 Vdc gt 5 5 Vdc controller shutdown failure 12V 12 0 Vdc voltage monitoring 9 6 Vdc 10 8 Vdc 12 0 Vdc 13 2 Vdc 14 4 Vde lt lt ld T HH l H Shutdown Warning Normal Warning Shutdown m 10 0 10 8 Vdc to 13 2 Vdc normal operation E 10 lt 20 9 6 to 10 8 Vdc and 13 2 to 14 4 Vdc warning range warning alert m gt 20 gt 20 lt 9 6 Vdc gt 14 4 Vdc to controller shutdown failure Battery temperature monitoring m Internal thermocouple in battery pack monitored m Warning issued if pack outside temperature range 5 C to 40 C m Write back cache remains enabled in the event of a battery thermal warning Temperature monitoring m Onboard temperature 5 C to 45 C no event 0 C to 4 C and 46 C to 50 C warning events outside warning range controller shuts down m Second onboard temperature 5 C to 65 C no event 0 C to 4 C and 66 C to 70 C warning events outsid
9. Managing Disk Drives and Enclosures Enabling and Disabling SMART Changes You can enable or disable the ability to change the Self Monitoring Analysis and Reporting Technology SMART settings for all drives connected to the controller This can be set to ENABLE DISABLE or DON T MODIFY which means the controller should not change any drive s SMART settings The default setting is DON T MODIFY On most drives SMART is disabled by default by the manufacturer You may want to enable it if you want disk drives to be able to recover from errors on their own In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller To enable or disable SMART changes 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays 2 Select Disk Configuration and press Enter The Disk Configuration screen displays 3 Select SMART and press Enter The SMART screen displays The current setting is marked with an next to it Chaparral Disk Array Administrator ystem Menu MART enu Set Date Tij DON T MODIFY ation t Host Config ENABLE he y Channel Con DISABLE SEP Configu g Disk Configu in Option Configuration l Restore Defaults Menu Selection Help Select a global disk SMART setting Drives equipped with this technology can alert the controller of impending drive fail
10. If you selected any array type other than RAID 50 the Number of Drives screen displays Chaparral Disk Array Administrator ystem Menu Array Men dd an Array ion Menu Add an Arj Number of Drives 2 enu Delete an enu Pool Spare oller Menu Display Drives Shutdown Restart All Partitions Menu Menu Selection Help Select the number of drives excluding spares you want in the array and press lt Enter gt The number drives presented in the selection list depends on the number of available drives in the system and the type of array chosen Note A RAID 10 array is created if more than 2 drives are chosen for a mirrored array Board Temp 75 F 24 C A A MODE Controller A Mon Nov 26 11 26 56 2000 Enter the number of drives excluding spares you want in the array and press Enter The Select Drives screen displays shown below If you are using Active Active mode the list includes all available drives that is drives that are not members of an array and are not assigned as a dedicated or pool spare on both controllers The list includes the following information for each drive Channel SCSIID Drive model number Drive firmware revision Drive capacity Drive state Drive manufacturer Select Drive s gt 1 Id 4 8683MB SEAGATE T39133LCU Available Id 11 8683MB SEAGATE ST39133LCU i Available Id 12 8683MB SEAGATE ST39133LCU i Available Id 13 8683MB SEAGATE ST39133LCU 7
11. A Caution Pausing I O halts active I O to the host Note If you are not sure that your enclosure supports hot swapping use the Hot Swap Pause option before you remove or replace any drives in an array 7 27 JSS122 JFS224 User s Guide Restoring Default Settings 7 28 To pause I O 1 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays Select Hot Swap Pause and press Enter The Bus Paused screen displays Menu Array Menu Configuration Menu Add an Array Utilities Menu Delete an Array Event Log Menu Pool Spare Menu Other Controller Menu Display Driv All Partitio BUS PAUSED EXIT to UnPause Restart Menu Selection Help Host Swap Pause suspends activity on all drive channels used by the controller and must be used when you remove or replace any drives to assure data integrity CAUTION Do not pause the controller for too long because host I Os are halted and the host operating system may time out for example Windows NT has a 10 second I 0 timeout limit gt Board Temp 73 F lt 23 C gt A A MODE Controller A Mon Nov 26 13 16 68 2006 3 When you have replaced the drive resume SCSI bus activity by pressing Esc otherwise an operating system time out may occur the time varies Caution Do not stay in the Hot Swap Pause mode for too long according to the operating system For example in Windows NT the default limitation d
12. The system confirms that the change is made Press Esc to return to the Option Configuration screen amp Note You must shut down and restart the controller for the change to take effect See Rebooting the Controller on page 7 1 Managing the Other Controller If you are using Active Active mode you can do the following Display information about the other controller see page 7 15 Shut down the other controller see page 7 16 Shut down both controllers see page 7 16 Change array owner see page 4 23 Kill the other controller see page 7 17 Unkill the other controller see page 7 17 Configuring the Controller Displaying Information about the Other Controller You can display information about the other controller If the other controller is up the information accurately reflects the other controller s information If the other controller is down the information reflects that last known state of the other controller If the other controller never communicated with the local controller since this controller was booted most fields will list Unknown or something similar To display information about the other controller 1 From the System Menu select Other Controller Menu and press Enter The Other Controller Menu is only available if the system is configured to run in Active Active mode The Other Controller Menu screen displays Chaparral Array Menu ther Controller Menu gt Menu Add an Array Ot
13. Whether the drive is up or down Channel number Back end disk bus number Target ID Size Size of the drive in MB Status If part of an array this displays the array name and member number If a spare this displays the type of spare If unused this displays Available If the drive was part of an array that no longer exists this displays Leftover amp Note If a drive has failed or malfunctioned it may not be listed To view drive status 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays 2 Select the array you want and press Enter The array menu displays 3 Select Drive Status and press Enter The drive status screen displays showing the drives that are members of the array and that are assigned as dedicated spares Display Drives 8683MB SEAGATE 1T39133LCU Available 8683MB SEAGATE 1T39133LCU Available 8683MB SEAGATE ST39133LCU Available 8683MB SEAGATE ST39133LCU 5 Available 8683MB SEAGATE 1T39133LCU Available 8683MB SEAGATE ST39133LCU Available 8683MB SEAGATE ST39133LCU 5 Available 8683MB SEAGATE T39133LCU 76001 Available a 6 1 1 2 2 3 3 Menu Selection Help Contains information about each drive connected to the controller The information displayed is Channel SCSI ID Size Manufacturer Model Number Firmware Revision Number and Status Board Temp 75 F 24 C A A MODE Contro
14. 2 Select the array you want and press Enter The array menu displays 3 Select Expand Function and press Enter The expand menu displays 4 Select Start Expand and press Enter The Number of Drives screen displays ystem Menu Configuration Menu rray2 ay Array Status Change Array Name Drive Status iF Array Abo tart Expand nd Uer Number of Drives 1 J Status Exp Delete Spare lenu Selection Help Select the number of drives to be added to the array The maximum number of drives that can be added depends on the array type and the number of available drives See the User s Guide for more information Board Temp 72 F 22 C A A MODE Controller A Mon Nov 26 11 56 66 2000 5 Enter the number of drives you want to add and press Enter The Select Drives screen displays fhaparral rysten Menu tart Expand Select Drive lt s gt 8761MB SEAGATE ST39236LCU R 0084 Available 8683MB SEAGATE ST39133LCU R 6061 Available 8761MB SEAGATE T39236LCU R 00904 Available Add Spare Delete Spare l Menu Selection Help Select array drives Board Temp 73 F 23 C A A MODE Controller A Mon Nov 26 11 56 53 2000 4 21 JSS122 JFS224 User s Guide 4 22 6 Select the drives you want to add from the list of available drives and press Enter Only available drives that is drives that are not members of an array and are not assigned as dedicated or pool spare
15. Deleting a Spare from the Spare Pool You can delete a spare from the spare pool at any time To delete a spare from the spare pool 1 From the System Menu select Pool Spare Menu and press Enter The Pool Spare Menu displays Select Delete Pool Spare and press Enter The Delete Pool Spare screen displays listing the drives assigned to the spare pool Select the pool spare you want to delete and press Enter Displaying the Spare Pool You can display a list of all of the pool spares To display the spare pool 1 From the System Menu select Pool Spare Menu and press Enter The Pool Spare Menu displays Select Display Pool Spares and press Enter The Display Pool Spare screen displays listing all disk drives assigned to the spare pool Press Esc to return to the Pool Spare Menu Configuring the Controller The Disk Array Administrator lets you configure settings and perform a variety of functions on the controller You can Reboot the controller see page 7 1 Change the date and time see page 7 2 Configure the host channels see page 7 4 View LUN information see page 7 7 Configure the SCSI disk channels see page 7 9 Configure the operating mode see page 7 11 Change the sample rate see page 7 20 Change the alarm mute setting see page 7 20 Lock the cache setting see page 7 21 Configure the battery see page 7 22 Change the utility priority see page 7 25 Rescan all channels see page 7 26 Pau
16. 77 F 25 C A A MODE Controller A Wed Nov 29 15 22 13 2606 2 Select the array you want and press Enter The array menu displays Chaparral Disk Array Administrator ystem Menu Rene Menu Configuration Menu l rrayi Array Status Change Array Name Drive Status Trust Array Abort Initialization Switch Array Owner Verify Function Partition Menu Expand Function Add a Partition Add Spare Delete a Partition Delete Spare Menu Selection Help Display status information for the selected array Board Temp 75 F 24 C gt A A MODE Controller A Mon Nov 26 11 25 07 2000 3 Select Array Status and press Enter The status screen displays showing the status of the array you selected rrayi State ONLINE Serial number 46048 4696b193a Name mult part RAID level RAIDO Number of drives Number drives per subarray NA Number of spare drives 8 Size 42 981MB Chunk size Date created 11 26 66 Utility NONE Number of partitions 1 Free partition total 18GB lenu Selection Help Display status information for the selected array Board Temp 73 F lt 23 C gt A A MODE Controller A Mon Noy 26 11 35 16 2000 4 Press Esc to return to the Array Menu 4 13 JSS122 JFS224 User s Guide Viewing Drive Status You can view the status of the drives in an array including the following information Drive number The drive s sequential position in the controller s drive list Drive status
17. Assign anew LUN to each array partition See Changing a Partition LUN on page 4 35 4 23 JSS122 JFS224 User s Guide 4 24 Trusting an Array You can use the Trust Array function to bring an array back online by resynchronizing the time and date stamp and any other metadata on a bad disk This makes the disk an active member of the array again You might need to do this when One or more disks of an array start up more slowly or were powered on after the rest of the disks in the array This causes the date and time stamps to differ which the controller interprets as a problem with the late disks In this case the array will function normally after using Trust Array An array is offline because a drive is failing you have no data backup and you want to try to recover the data from the array In this case the Trust Array function may work but only as long as the failing drive continues to operate Before you can use this function you must enable it in the Option Configuration menu A Caution The Trust Array feature can cause unstable operation and data loss if used improperly This feature is intended for disaster recovery To trust an array 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays Select Option Configuration and press Enter The Option Configuration Menu displays Select Enable Trust Array and press Enter The Enable Trust Array screen display
18. Drive requirements by RAID level Minimum Maximum number of number of RAID level drives drives Volume Set 1 1 RAID 0 2 16 RAID 1 Mirrored 2 16 RAID 3 3 16 RAID 4 3 16 RAID 5 3 16 RAID 50 6 32 amp Note Before you create more than one array you must be sure that your host operating system supports multiple logical unit numbers LUNs Most operating systems do or have an option you can enable to support multiple LUNs If your operating system does not support multiple LUNs the host will only be able to see one array at LUN 0 4 1 JSS122 JFS224 User s Guide 4 2 Before you create an array you must decide whether you want to partition the array You can create an array one of two ways E Asasingle partition array an array that stores all data in a single partition and is accessed by a single LUN see page 4 2 E Asamultiple partition array an array that can have one or more partitions with each partition assigned its own LUN see page 4 7 For more information about partitions see Understanding Partitions on page 4 26 Creating a Single Partition Array You can create an array that has just one partition Once you create a single partition array you cannot add more partitions Single partition arrays work well in environments that need one large fault tolerant storage space for data on one server A large database accessed by users on a single server that is used only for that
19. Drives and Enclosures m Status If a member of an array this displays the array name and member number If a spare this displays the type of spare If unused this displays Available If the drive was part of an array that no longer exists this displays Leftover amp Note If a drive has failed or malfunctioned it may not be listed To view drive status 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays 2 Select the array you want and press Enter The array menu displays 3 Select Drive Status and press Enter The drive status screen displays showing the drives that are members of the array and that are assigned as spares 8761MB fArrayi Memberi 8683MB Arrayl Member2 8683MB Arrayi Member3 8683MB Arrayl Member4 8683MB Arrayl MemberS Menu Selection Help Display the status of all drives that are members of the array Board Temp 75 F 24 C A A MODE Controller A Mon Nov 20 11 46 14 2000 Use the T or J key to scroll through the drives These are the drives that are currently members of the array 4 Press Esc to return to the Array Menu Clearing Metadata from a Drive All of the member drives in an array contain metadata in the first sectors of the drive The controller uses the metadata to identify array members after restarting or changing controllers You can clear the metadata from a drive if you have
20. Dynamic Spare Conf ig 5jion t Host A Enabled y Menu Selection Help Use this menu to configure the dynamic spare feature If dynamic spares are enabled the system is allowed to automatically convert drives marked as Available to pool spares if a drive is needed to rebuild an array Board Temp 75 F 24 C A A MODE Controller A Mon Noy 20 12 32 29 2000 4 Select Enabled and press Enter The Rescan Rate screen displays 5 Enter the rescan rate in minutes This tells the controller how often it should look for an available drive by rescanning the bus Rescanning the bus frequently can affect performance If you have a SEP the dynamic spare configuration will not rescan the bus The SEP will detect the new drive and tell the controller to rescan the rescan rate you set here will not affect the system The system confirms the change 6 Select Yes and press Enter Managing the Spare Pool The spare pool lets you have one or more disk drives available for the reconstruction of redundant arrays mirrored RAID 1 and RAID 10 and parity RAID 3 RAID 4 RAID 5 and RAID 50 Once you assign a drive to the spare pool it is not available for use as an array member or as a dedicated spare In Active Active mode pool spares are available to both controllers If a drive in an array on either controller fails the controller can use a pool spare to reconstruct the array If a pool spare is too
21. E 4 19 Expanding Array Capacity sisssassiccheiecactsgucasiniadis intaditiuisdviniateaiiatensilaces 4 20 Viewing Expand Status gissen A 4 22 Changing an Array Nanie saiseioseininnnin aa EEA 4 22 iii JSS122 JFS224 User s Guide Changing Array Ownership c cccccccecssessecessceceeeseeesecaeceseeeeeeeeeesseeseeneenes 4 23 Trusting an Array naiona Aa EAA 4 24 Deleting an Array senan an tweens 4 25 Managing Partitions sorirrariinoinai tinar nna A 4 26 Understanding Partitions sedazioa 4 26 Viewing Partition Status Information ccc eceeeesceteeseereeeeceseeaeeaeeaeees 4 27 Viewing Partition Status caisiicsnsaigganssennensseivia sedis a eidaaididaaieegaitienatss 4 27 Viewing Partition Statistics scsicwavassedesassicevasescvaedescvseastiensaeiiensantitesee ss 4 29 Resetting Partition Statistics sirisszeisisaasssessasiesiaasareeesscnwuptaneaasnrersaniowedean 4 31 Expanding a Partition seserian 4 33 Changing a Partition Name ccccceecesceeesceseeeeeeseesecaceeeeeseeeececeaeeaeeaeess 4 34 Changing a Partition LUN sssenireniennme e 4 35 Deleting a Partition arsane 4 35 5 Monitoring System Status Displaying the Event LOS wirainsnddeteonianuda ars Gordian ay 5 2 Viewing the Most Recent Event cccccecseseessceeeeseeseeeeceeceaeeaeeaeeeeeeaeeaeenee 5 2 Viewing One Event at a Time oo eee eeeeeesceseeeececeeceeeeeeeceeceaeeaeeaeeeneeaeeaeenee 5 3 Viewing a Whole Screen of Events cccccecccccseesseessceeeceeseese
22. ID 7 5 changing the sample rate 7 20 changing utility priority 7 25 changing which owns an array 4 23 configuration examples 1 1 C 3 C 4 C 6 configuration options C 14 configuring 7 1 connecting to the FC port 2 2 connecting to the RS 232 port 2 3 connecting to the SCSI port 2 2 disabling host channels 7 4 disabling the battery 7 22 displaying configuration information 5 5 displaying events 5 2 displaying hardware information 5 5 displaying information about the other 7 15 enabling host channels 7 4 enabling the battery 7 22 features 1 1 B 1 installing 2 1 killing the other 7 17 locking the cache setting 7 21 LUN for 7 7 managing other 7 14 monitoring status of 5 1 problems with 9 6 rebooting 7 1 replacing 9 7 rescanning channels 7 26 restarting the other 7 17 restoring defaults 7 28 selecting the link speed 7 4 selecting the topology 7 4 setting the date and time 7 2 shutting down both 7 16 shutting down the other 7 16 7 17 specifications B 1 turning the alarm on or off 7 20 understanding LUNs for 7 7 unkilling the other 7 17 upgrading firmware 7 29 conventions 1 3 creating arrays 4 1 multiple partition arrays 4 7 single partition arrays 4 2 customer support 9 1 D data status of verifying 4 18 stopping verify process 4 19 verifying 4 17 date setting 7 2 dedicated spares adding 6 2 defined 6 1 deleting 6 3 default settings restoring 7 28 Delete an Array 4 25 Delete Spare 6 3 Index Delete This Parti
23. Keep the same LUN for the SEP m Select the LUN you want to use and press Enter at all times This can be any number from 0 to 63 that is not already in use The system confirms that you want to make the change 6 Select Yes and press Enter to make the change Changing the Additional SEP Settings You can change four additional SEP settings Polling interval This is the interval in seconds that the controller polls the SEPs for status changes If the polling rate is set to zero the controller does not communicate with the SEP Only use this setting if you suspect you are having communication problems with the SEP The default setting is five seconds In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller Temperature sensor status This controls whether the controller s onboard temperature sensor provides temperature information to the host along with the enclosure s temperature detected by the SEP The default setting is OFF which means that only the enclosure s temperature is reported Slot update status Slot Flags This controls whether the controller sends commands to the SEP to update the status of each enclosure slot The default setting is ON which means that the controller will update the Device Slot Status flags Enclosure update status Global Flags This controls whether the controller se
24. O operations across the two host ports Stand Alone Single Port JSS122 only Allows the controller to operate with one host port and three disk channels Active Active Dual Port JFS224 only Allows two controllers to operate independently and to cooperate in system operation in a fault tolerant manner Active Passive Dual Port JSS122 only Allows you to use just one controller with the second controller acting only as a backup in case of a failure of the controller in use Features and Specifications Table B 2 shows the physical and environmental specifications of the JSS122 and JFS224 Table B 2 Physical and environmental specifications Board form factor m 4 25 in x 9 0 in PCB outline 10 80 cm x 22 86 cm m 2 7 in x 4 7 in daughterboard PCB board outline 6 86 cm x 11 94 cm JFS224 only m 1 1 in 2 79 cm total height with unbuffered DIMM m 1 2 in 3 05 cm with registered DIMM Backplane 376 I O pin AMP Z Pack HM series connector Power a 5 0 Vdc 6 0A typical 8 0A max 5 input tolerance requirements m 12 0 Vdc 0 2A max normal operation 0 6A max battery charging 10 input tolerance Battery backup 3 cell NiMH battery pack with integrated thermistor and overcurrent fuse see the Design In Guide for further details Temperature m 5 C to 45 C with specified airflow m 0 C to 5 C and 45 C to 50 C degraded mode operating range m 40 C to 100 C nonoperating storage
25. Sectors 128 255 Sectors 256 511 Sectors 512 1023 Sectors 1024 2047 Sectors 2048 and larger Sectors Tip This information may be helpful in interpreting performance based on individual system configuration such as HBA driver configuration SAN configuration and host operating system configuration The statistical information can be useful to profile applications and their usage of a partition which could be used to determine if additional arrays would increase performance and what type of RAID level is applicable to your needs See Appendix A Array Basics for more details on RAID levels 5 9 JSS122 JFS224 User s Guide amp Note The statistics are provided as general information for your use however they are not intended for benchmarking purposes To access the general array statistics 1 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays 2 Select Overall Statistics and press Enter The Overall Statistics screen displays Array Menu Add an Array R verall Statistics Delete an Arr H View Statistics Pool Spare Me j H View R W Histogram enu Display Drive A Reset All Statistics All Partition Ou Engineering Menu Menu Selection Help View the overall statistics for all storage LUNs in the controller This display provides general information about how the host systems accesses the controller These are updated at the user sel
26. Selection Help Change how the controller interacts with all SEPs lt SAF TE Environmental Processors in the enclosure Board Temp 77 F 25 C A A MODE Controller A Mon Nov 26 14 35 13 2000 3 Select SEP LUNs and press Enter The SEP LUNs screen displays ystem Menu onfiguration Menu Set Date Time SEP Configuration Host Configur EP LUNs 9s y Channel Conf il SEP SEP Configura Disk Configura ing Option Configuration l Restore Defaults Menu Selection Help Select the number of a SEP lt SAF TE Environmental Processor whose LUN you you want to change Board Temp 75 F 24 C A A MODE Controller A Mon Noy 26 13 21 27 2000 4 Select the SEP ID you want and press Enter The SEP ID can be any number from 0 9 The controller assigns SEP IDs sequentially when it starts The SEP LUN screen displays Set Date Time EP a Hoste Confdgur BEE Settings ay SEP Conf SEP TUN __NONE Disk Con Option Co e DEEE enu Selection Help Set SEP LUN Options are None or an unused LUN value None prevents the SEP from having a LUN assigned to it which may be desirable with large numbers of storage LUNs Board Temp 75 F 24 C A A MODE Controller A Mon Nov 26 13 21 53 2000 8 11 JSS122 JFS224 User s Guide 8 12 5 Select the option or number you want to use To Do this Not assign the SEP a LUN m Select NONE and press Enter
27. User s Guide 7 30 6 While the controller reboots hold down the spacebar on your keyboard 8 The Flash Utility screen displays Flash Utility Local Memory Test Passed Configuration OK FLASH LOADER v6 012 Jan 10 2001 12 28 09 Select Protocol 1 FAST BINARY KERMIT KMODEM Run diagnostics Run controller Utility Menu Reboot Press the number on your keyboard that corresponds to the protocol you want to use to transfer the firmware upgrade file from your computer to the controller We recommend using the KERMIT protocol The system shows that it is ready to use KERMIT Using your terminal emulator software send the fla file using KERMIT If you are using HyperTerminal select Transfer Send File navigate to where the firmware update file is located select it and click Open Select the same Protocol from the drop down list that you selected from the Flash Utility screen Click Send The file transfers The system displays messages showing that it is flashing the code and rebooting the controller A Caution Do not interrupt the power when transferring the new firmware Managing Disk Drives and Enclosures The Disk Array Administrator software lets you control a variety of functions related to disk drives and SAF TE Environmental Processor SEP enclosures connected to your controller m For drives you can Display drive information see page 8 1 Clear metadata from a drive see
28. active active configuration a single controller has ownership of the following resources arrays and dedicated spares When a controller fails the other controller assumes temporary ownership of its resources Point to Point A point to point connection is a communication link between two end systems Chaparral uses this term to refer to a link between the controller or router N port and the F port on a switch The point to point topology is one of three FC topologies in which two ports are directly connected by a link there are no fabric loop or switching elements present Router A router is a device that enables connectivity between SCSI devices and FC networks It routes each data command to the appropriate SCSI channel based on the address it is intended for SCSI adapter A SCSI adapter is a 16 bit fast wide or 8 bit narrow single ended or differential physical connection between a router and SCSI devices Each SCSI adapter supports up to 16 fast wide or 8 narrow SCSI devices including itself SCSI addressing Each device supported by a SCSI adapter has its own unique SCSI address which dictates the device s priority when arbitrating for access to the SCSI bus A SCSI address of 7 has the highest priority For a fast wide SCSI adapter that supports up to 16 devices the next highest priority address is 6 then 5 4 3 2 1 0 15 14 13 12 11 10 9 and 8 A narrow SCSI adapter supports up to eight devices includin
29. and RAID 10 arrays Array drives Number of drives in the array when fault tolerant For example if a three drive RAID 5 array loses one drive the number will still display 3 Name Name you give to the partition Serial number Unique number the controller assigns to each partition Target ID LUN Target ID and LUN presented to the host system Partition size Size of the partition expressed in MB 4 27 JSS122 JFS224 User s Guide 4 28 m Percentage of total array The percentage of the total array that this partition represents E Write back caching Status of the write back cache enabled or disabled for this array To view the status of a partition 1 Display the partition menu From the Array Menu 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays Select the array you want and press Enter The array menu displays Select Partition Menu and press Enter The Select Partition screen displays with a list of existing partitions for the current array Select the partition you want and press Enter The partition menu displays From the All Partitions Menu 1 From the System Menu select All Partitions Menu and press Enter The Select Partition or Free Area screen displays with a list of existing partitions and free space 2 Select the partition you want and press Enter The partition menu displays yst
30. application is an example To create a single partition array 1 From the System Menu select Add an Array and press Enter The Enter Array Name screen displays Menu Array Menu Configuration Menu Add an Array Utilities Menu Delete an Array Event Log Menu Pool Spare Menu Other Controller Menu Display Drives Shutdown Restart ALL ee el Array na Menu Selection Help Enter array name 16 characters or less recommended Names longer than 16 characters may be truncated in certain displays Board Temp 73 F lt 23 C gt A A MODE Controller A Mon Nov 26 11 17 31 2608 2 Enter aname for the array and press Enter You can use up to 20 characters You can include any characters in the name including spaces If you do not want to name the array you can just press Enter You can add or change the name later The system asks if you want to create one partition now for the entire array Creating and Managing Arrays and Partitions 3 Select Yes to create a single partition array and press Enter If you want to create a multiple partition array see Creating a Multiple Partition Array on page 4 7 The LUN screen displays i Chaparral Disk Array Administrator ystem Menu Array Menu dd an ArraySjuration Menu Add an Array LUN 63 es Menu Delete an Arra og Menu Pool Spare Menu ontroller Menu Display Drives Shutdown Restart All Partitions Menu enu Selection Help Select the LUN to be asso
31. array LUNs Before creating your first array change the controller LUN to a higher value or choose NONE best choice if you are not using CAPI to manage the arrays This allows your first array to be seen at LUN 0 Note Most Unix Linux and Macintosh operating systems require that m SEP LUNs Allow access to SEPs You can set a SEP LUN to a value of 0 63 or NONE NONE means that the SEP cannot be accessed via a LUN For information about changing the SEP LUN see Setting the SEP LUN on page 8 10 m Partition LUNs Allow access to partitions on the controller You can set partition LUNs to any numeric value from 0 63 For information about changing the partition LUN see Changing a Partition LUN on page 4 35 JSS122 JFS224 User s Guide Viewing LUN Information You can view information for each existing LUN To view LUN information 1 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays ystem Menu Array Menu tilities Menu Menu Add an Array Rescan Delete an Arr Hot Swap Pause Pool Spare Me Hardware Information r Menu Display Drive LUN Information t All Partition Drive Utilities Menu Overall Statistics Engineering Menu Menu Selection Help Tell the controller to probe all backend channels for new or removed drives Use this option when installing or removing drives If using an enclosure with a SEP the rescan will be done automatically removed drives a
32. battery and resets the battery age Press y and Enter to make the change B Set Battery Age Use this option when you install a battery from another controller to reset the age to a specific age in months The system prompts you to enter the age of the current battery in months Enter the number of months and press Enter The system confirms the new age Press y and Enter to make the change Configuring the Controller C Disable Battery Life Monitor Use this option to completely disable the Battery Life Monitor function We do not recommend using this option 8 Press q to return to the Utility Menu 9 Press x to reboot the controller Changing the Utility Priority You can change the priority at which all utilities Verify Reconstruct Expand Initialize etc run when there are active I O operations competing for the controller s CPU The choices are m High default E Medium mg Low For example select High if your highest priority is to get the array back to a fully fault tolerant state This causes heavy I O with the host to be slower than normal Select Low priority if streaming data without interruption such as for a Web server is more important than data redundancy This allows the Reconstruct or other utility to run at a slower rate with minimal effects on host I O 7 25 JSS122 JFS224 User s Guide To change the utility priority 1 From the System Menu select Configuration Menu and press Enter
33. can see that this is a medium error unrecovered read error recommend reassignment Table 9 3 lists some of the most common SCSI sense key descriptions in hexadecimal Table 9 4 lists the descriptions for the most common sense codes ASC and sense code qualifiers ASCQ all in hexadecimal Refer to the SCSI Primary Commands 2 SPC 2 Specification for a complete list of ASC and ASCQ descriptions Table 9 3 Sense key descriptions Sense Key Description Oh No sense lh Recovered error 2h Not ready 3h Medium error 4h Hardware error 5h Illegal request 6h Unit attention 7h Data protect 8h Blank check 9h Vendor specific Ah Copy aborted Bh Aborted command Ch Obsolete Dh Volume overflow Eh Miscompare Fh Reserved Table 9 4 ASC and ASCQ descriptions ASC Descriptions ASC Q 0C 02 Write error auto reallocation failed 0C 03 Write error recommend reassignment 11 00 Unrecovered read error 11 01 Read retries exhausted 11 02 Error too long to correct 11 03 Multiple read errors 11 04 Unrecovered read error auto reallocation failed 11 0B Unrecovered read error recommend reassignment 9 12 Troubleshooting Table 9 4 ASC and ASCQ descriptions Continued ASC Descriptions ASC Q 11 0C Unrecovered read error recommend rewrite the data 47 00 SCSI parity error 48 00 Initiator detected error message received Disk Channel Errors Disk
34. cece cceescessecstecesceeeeeeeeeeeeeenseens B 4 C Theory of Operation Operating Modes Overview c ccccecscecsscesscesseesceeeceseecseecseceseceeenseeeseenaeenseeneeeaes C 1 Stand Alone Mode Single Port or Dual Port JSS122 occ ceeeceeteeeeeeee C 2 Active Active Single Port Mode JSS122 o cccccccccsccesceesceeseesteceeceeeeeeeenseenees C 3 Stand Alone Dual Port Mode JFS224 oo cccccccececcessceeseeseeeeenseceaeeneeeseeeeeeeates C 6 Active Active Mode Single Port or Dual Port JFS224 oo ecceeeeeseeteeees C 6 Active Passive Mode sicirssiaraisj nanstviatetpiotainsiiaene E C 10 Understanding Mirrored Configuration cccccccsscesseeeseeeeeeeeeeeeeenteeneeees C 12 World Wide Name Impersonation JFS224 eccecccesccesseeceeseeseesteeteeeeeennes C 12 Host System Connectivity Options cccecccccseessesseceseceeeeeeceeeeeseecsseeeeeeeeaes C 14 Stand Alone Connectivity Options JSS122 oo ceeceeceeeeeeeeceteeteeneeeeees C 16 Active Active Single Port Connectivity Options JSS122 oo C 18 Stand Alone Connectivity Options JFS224 c eeeeeccecsseesecetseeeeeeeesees C 20 Active Active Single Port Connectivity Options JFS224 oo C 21 D SAF TE Implementation What Is SAF TE and What Are SEPS oo ieee cece ceeeeeeeeeseeesesesensnsnensncaeeeneneeeees D 1 Enclosure Considerations ccecceeceecececeesssssseesessssscesensnensnsneceacacacececececeseeecs D 1 Host Communication Methods wi cccccccccceccsccccccesssss
35. channel errors are similar to disk detected errors except they are detected by the controller instead of the disk drive Some disk channel errors are displayed as text strings others are displayed as hexadecimal codes Figure 9 2 shows a disk channel error displaying the hexadecimal code Table 9 5 lists the error code descriptions Most disk channel errors are informational because the controller issues retries to correct any problem Errors that cannot be corrected with retries will result in another critical event describing the affected array if any DISK CHANNEL ERR 1 08 TskStat 21 Disk Channel SCSI ID Error Code Figure 9 2 Disk channel error example Table 9 5 Disk channel error codes Error Description Code 04 Data overrun or underrun occurred while getting sense data 05 Request for sense data failed 20 Selection timeout occurred displayed as Sel Timeout 21 Controller detected an unrecoverable protocol error on the part of the target 22 Unexpected bus free condition occurred displayed as Unex Bsfree 23 Parity error on data was received from a target displayed as Parity Err 24 Data overrun or underrun has been detected displayed as Data OvRn 30 Target reported busy status displayed as Dev Busy 31 Target reported queue full status displayed as QueueFull 32 Target has been reserved by another initiator 40 Controller aborted an I O request to this target because it
36. controller To set the controller s date 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays Select Set Date Time and press Enter The Set Date Time screen displays Chaparral Disk Array Administrator ystem Menu onfiguration Menu Set Date Time et Date Time t Host Configur Set Time y Channel Confij Set Date SEP Configura Disk Configura ing Option Configuration Restore Defaults Menu Selection Help Set current system time of day Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 12 34 14 2000 3 Select Set Date and press Enter 6 Configuring the Controller The Set Date screen displays Chaparral Disk Array Administrator onfiguration Menu Set Date Time gt Set aT Host Configu et 72000 Channel Conf 11 20 2000 SEP Conf igur Disk Configur Option Configuration Restore Defaults Menu Selection Help Set current system date Board Temp 73 F lt 23 C A A MODE Controller A Mon Nov 26 12 34 42 2000 Enter the date you want and press Enter Enter the date in the following format MM DD YYYY The system confirms that you want to make the change Select Yes and press Enter to make the change The system confirms that the change is made Press Esc to return to the Configuration Menu To set the controller s time 1 4 From the System Menu select Conf
37. controllers automatically reconstruct redundant fault tolerant arrays RAID 3 RAID 4 RAID 5 RAID 50 and mirrored if an array becomes critical and a properly sized spare drive is available An array becomes critical when one or more member drives fails You can set up two types of spare drives m Dedicated Available drive that is assigned to a specific array see page 6 2 m Pool Available drive that is assigned to the pool which can provide a spare for any failed drive in any redundant array In Active Active mode pool spares are available to both controllers If a drive in an array on either controller fails the controller can use a pool spare to reconstruct the array see page 6 4 In addition if you enable the Dynamic Spares option and a drive fails you can replace the drive and the controller will rescan the bus find the new disk drive and automatically start reconstruction of the array see page 6 3 The controller looks for a dedicated spare first If it does not find a properly sized dedicated spare it looks for a pool spare If a reconstruct does not start automatically it means that no valid spares are available To start a reconstruct you must 1 Replace the failed drive if no other drive is available 2 Add the new drive or another available drive as a dedicated spare to the array or as a pool spare Remember that any pool spares added might be used by any critical array not necessarily the array you w
38. examples C 3 defined 7 13 B 2 C 2 Start Expand 4 21 Start Verify 4 18 statistics resetting aggregate for all arrays 5 11 resetting for partitions 4 31 viewing aggregate for all arrays 5 9 viewing for partitions 4 29 viewing read write histogram 5 9 status monitoring for system 5 1 of expanding 4 22 viewing for arrays 4 12 viewing for disk drive cache 8 6 viewing for drives 4 14 8 2 viewing for partitions 4 27 striped disks A 2 support 9 1 l 7 JSS122 JFS224 User s Guide Switch Array Owner 4 23 System Menu 3 3 system monitoring status of 5 1 T target ID changing for controller 7 5 technical support 9 1 temperature alarm thresholds for 7 20 temperature monitoring B 4 Temperature screen 8 13 temperature status setting changing for enclosures 8 12 terminal emulator software 3 1 terminal screen problems 9 1 Test Unit Ready 8 9 testing disk drives 8 9 theory of operation C 1 time setting 7 2 topology Auto Detection setting 7 4 LOOP setting 7 4 POINT TO POINT setting 7 4 selecting 7 4 troubleshooting 9 1 trusting arrays 4 24 typographic conventions 1 3 U Ultra160 checking that can operate at 7 9 Unkill Other 7 17 unkill defined 7 11 unkilling the other controller 7 17 upgrading controller firmware 7 29 utilities changing priority of 7 25 Utility Menu screen 7 19 Utility Priority screen 7 26 V Verify Function 4 18 4 19 Verify Status screen 4 19 verifying data 4 17 status of 4 18 stopping pro
39. host along with the enclosure s temperature detected by the SEP Board Temp 77 F 25 C A A MODE Controller A Mon Nov 26 14 34 25 2000 5 Select whether you want to include the controller s temperature and press Enter The Slot Flags screen displays The current setting is marked with an next to it ystem Menu EP SettingsSjenu Set Date Tim Slot Flags ation t Host Configu OFF y Channel Conf 0N SEP Configur Disk Conf igur ing Option Configuration Restore Defaults enu Selection Help Slot Flags Specifies the controller to send commands to the SEP to update the status of each disk drive slot Board Temp 77 F lt 25 C gt A A MODE Controller A Mon Nov 26 14 33 38 2000 8 13 JSS122 JFS224 User s Guide 6 Select whether you want the controller to send slot status updates to the SEP and press Enter The Global Flags screen displays The current setting is marked with an next to it Chaparral Disk Array Administrator ysten Menu EP Settings jenu Set Date Tim Global Flags s Host Configu Channel Conf SEP Configur Disk Conf igur Option Configuration Restore Defaults Global Flags Specifies the controller to send commands to the SEP to enu Selection Help update the overall status of the enclosure Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 2 13 23 26 2000 7 Select whether you want the controller to send enclosure sta
40. internal hubs 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays 2 Select Option Configuration and press Enter The Option Configuration screen displays Configuring the Controller 3 Select Enclosure Features and press Enter The Enclosure Features screen displays 4 Select the option you want and press Enter Config Internal Hubs This option to configures the hub to enable or disable the controller s internal FC hubs Select Enable or Disable and press Enter Connect I Hubs on FO This option to forces the hub into a single loop when a failover FO occurs permitting access to all LUNs from either port on the enclosure Understanding LUNs and Viewing LUN Information The RAID controller supports up to 64 SCSI logical unit numbers LUNs that are numbered zero through 63 There are three different types of LUNs controller SEP and partition You can view information about each LUN See Viewing LUN Information on page 7 8 The three types of LUNs have the following characteristics E Controller LUN Allows CAPI to configure the controller You only need to assign a controller LUN if you are using CAPI to configure the controller over a host channel using SCSI protocol extensions If you are not using CAPI you can set the controller LUN to NONE If you are using CAPI you can set it to a value of 0 63 the controller LUN be set to a higher value than all
41. of the initialization displays in the list of arrays If you find that you need to change the disks or some other array configuration you can stop the array initialization process See Stopping the Array Initialization Process on page 4 15 reboot the host system to see the new array Windows 2000 can recognize Note Most operating systems such as Windows NT 4 0 require you to new LUNs by selecting Refresh from the Computer Management Window NetWare v3 12 and later can recognize new devices by typing the command SCAN FOR NEW DEVICES at the console prompt Other operating systems might have similar features 4 11 JSS122 JFS224 User s Guide Managing Arrays 4 12 The Disk Array Administrator software lets you manage your arrays in a variety of ways You can View array and drive status see page 4 12 Stop the initialization process see page 4 15 Add a partition see page 4 15 Verify an array see page 4 17 Reconstruct an array see page 4 19 Expand array capacity see page 4 20 Change the array name see page 4 22 Change array ownership see page 4 23 Trust an array see page 4 24 Delete an array see page 4 25 Viewing Array and Drive Status Information Array and drive status information is available in two ways View array status see page 4 12 View drive status see page 4 14 Viewing Array Status You can view the status of an array including the following information State Onli
42. or fault tolerance Chaparral s RAID controllers let you create the types of arrays that have proven to be the most useful for RAID applications RAID 0 1 10 also known as mirrored 3 4 5 50 and volume sets RAID 0 Striped Disks Ina RAID 0 array data is distributed or striped across the disks in the array The array appears to the server as one large disk with a capacity approximately equal to the combined capacity of the physical disks Because multiple reads and writes can be handled in parallel the I O performance of the array is much better than that of a single physical disk RAID 0 arrays do not store redundant data so they are not true RAID applications If one disk fails the entire array fails and all array data is lost The fault tolerance of a RAID 0 array therefore is less than that of any single disk in the array The term RAID 0 is widely used for these arrays however because they are conceptually similar to true RAID applications RAID 1 RAID 10 Mirrored Disks In RAID 1 and RAID 10 arrays commonly called mirrored arrays disks are paired with both disks in a pair containing the same data When data is written to a mirrored array it is written twice once to each disk in the pair A RAID 1 array has only one set of paired disks A RAID 10 array has multiple pairs across which data is striped The read performance of RAID 1 arrays can be much better than that of a single disk while the write performa
43. press Enter The partition menu displays From the All Partitions Menu 1 From the System Menu select All Partitions Menu and press Enter The Select Partition or Free Area screen displays with a list of existing partitions and free space 2 Select the partition you want and press Enter The partition menu displays 2 Select Change Partition Name and press Enter The Enter New Name screen displays 3 Enter the name you want to use and press Enter You can use up to 20 characters You can include any characters in the name including spaces The system confirms that you want to make the change 4 Select Yes and press Enter Creating and Managing Arrays and Partitions Changing a Partition LUN You can change the LUN assigned to a partition as it appears under the controller s target ID from the host system s point of view The change takes place immediately however you may need to reboot the host system to see the partition at the new LUN If you want to use a LUN that is already in use you must first reassign the Note You cannot change the partition s LUN to one that is already in use LUN in use For more information about LUNs and your controller see Understanding LUNs and Viewing LUN Information on page 7 7 To change a partition LUN 1 Display the partition menu From the Array Menu From the All Partitions Menu 1 From the System Menu select Array Menu 1 From the System Menu
44. returns to the statistics menu Creating and Managing Arrays and Partitions Expanding a Partition You can expand an existing partition with some limitations You can only expand a partition into contiguous following free space For more information about partitions see Understanding Partitions on page 4 26 To expand a partition 1 Display the partition menu From the Array Menu 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays 2 Select the array you want and press Enter The array menu displays 3 Select Partition Menu and press Enter The Select Partition screen displays with a list of existing partitions for the current array 4 Select the partition you want and press Enter The partition menu displays From the All Partitions Menu 1 From the System Menu select All Partitions Menu and press Enter The Select Partition or Free Area screen displays with a list of existing partitions and free space 2 Select the partition you want and press Enter The partition menu displays 2 Select Expand Partition and press Enter The Expand Partition screen displays ystem Menu Array Menu Configuration Menu Add an Array Utilities Menu Delete an Array m Arrayi Parti Expand Partition 1 43MB Remain GMB Max 1 043MB Total 2 043MB gt Change Partition Name Delete this Partition
45. see a f type the C w L R u T Board Temp Men indow describing most l screen hardware information display with further details L E command once or twice BitFeteer2tG Hardware Information Firmware revision L426 Base level L426Ra2 Board revision CPLD revision a CPLO2 revision 6S Loader revision 6 81 Serial Aly ats 66561308695 Produc JFS22 ahterbosrd ID F Bac Co ntroller ID Data Mem 512 M Buffer SDR ECC On nu Selection Hel hardware informat iol Act Act DualPrt Cntlr A 3 Press Esc to return to the Utilities Menu 20 12 26 22 2000 n on the controller Fri Oct 26 11 49 26 2001 JSS122 JFS224 User s Guide To display hardware and configuration information 1 From anywhere in the Disk Array Administrator software press CTRL E The first screen of events from the event log displays 2 Press CTRL E again The debug log displays 3 Press CTRL E again The HW Info screen displays Chaparral Disk Array Administrator trmware revision 2 Base level Board revision CPLO revision CPLDZ revision Loader revision DeeassD Channel Rio Al ata Memor Buffer SDRAM EC E C 8 a 6 Ls JF 5 A 5 0 HW Info Use up down arrows PageUp PageDown End Home Dump ESC Board Temp 77 F 25 C Act Act DualPrt Cntlr A Fri Oct 26 11 49 56 2001 4 Press CTRL E again You can press Esc to return to the previous screen The CFG Info screen displa
46. select All and press Enter Partitions Menu and press Enter The Select Array screen displays with a list The Select Partition or Free Area of existing arrays screen displays with a list of existing 2 Select the array you want and press Enter partitions and free space The array menu displays 2 Select the partition you want and press Enter ow Select Partition Menu and press Enter f The Select Partition screen displays with a The partition menu displays list of existing partitions for the current array 4 Select the partition you want and press Enter The partition menu displays 2 Select Change LUN and press Enter The New LUN screen displays 3 Enter the LUN you want to use and press Enter The system confirms that you want to make the change 4 Select Yes and press Enter Deleting a Partition You can delete a partition when you no longer need it and you want to use the space for another purpose A Caution Deleting a partition deletes all data contained in the partition 4 35 JSS122 JFS224 User s Guide 4 36 To delete a partition 1 Display the partition menu From the Array Menu 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays Select the array you want and press Enter The array menu displays Select Partition Menu and press Enter The Select Partition screen displays with a list of existing partit
47. that indicate how the partition will be used For example if the first partition will be used to store your customer database give it a name like cust data base When you first create an array set up for multiple partitions all of the space on the array is designated as free space as shown in Figure 4 1 Free space ASYY aSa Figure 4 1 Array set up for multiple partitions before creating partitions When you create a partition you set how large you want the partition to be in MB Figure 4 2 shows a single partition Partition 1 Free space C Figure 4 2 Array after creating one partition The Disk Array Administrator assigns each partition a unique serial number and sequence number It assigns sequence numbers in the order the partitions are created so the first partition on an array is number 1 the second is 2 and so on Once you create one or more partitions on an array you can create additional partitions in the remaining free space or you can expand a partition with some limitations You can only expand a partition into contiguous following free space In Figure 4 2 you can expand partition 1 or you can create additional partitions in the free space Creating and Managing Arrays and Partitions After you partition all of the free space you can expand the size of a partition only by deleting a partition that follows has a higher number than the one you want to expand In Figur
48. the mode using the Configuration Menu There are up to four disk channels available One advantage of dual host port mode is to maximize bandwidth and host IOPs For sequential access patterns where disks can supply more than 160 MB sec of data to a host it could be advantageous to run in dual port mode Another advantage is that with an appropriate host driver the host has a redundant path to each array In dual host port mode all arrays appear on both host ports at the same LUN positions If both ports are connected to the same host the host will see a given array twice unless it does special processing to detect duplicate paths to an array A host device driver may provide this functionality Hosts can detect redundant paths to an array by matching array serial numbers from SCSI inquiry data Dual Port Stand Alone Controller Ultra 160 Disk SCSI Buses Fibre Channel Dual Port Physica Channel 0 Chan_0 Host 1 FC Port 1 Physica Channel 1 Host 2 Physica FC Port 2 Channel 2 Physica Channel 3 Figure C 5 JF S224 stand alone dual port configuration Active Active Mode Single Port or Dual Port JFS224 In Active Active Single Port or Dual Port mode two JFS224 controllers cooperate to provide redundancy If one controller fails the remaining controller will take over the failed controller s functionality To accomplish this each controller has two hos
49. timed out displayed as 1 OTimeout 41 T O request was aborted because of a channel reset 9 13 JSS122 JFS224 User s Guide Table 9 5 Disk channel error codes Continued Error Code 42 Description T O request was aborted because of controller s decision to reset the channel 43 T O request was aborted because of third party channel reset displayed as Abort 3PRST 44 Controller decided to abort I O request for reasons other than bus or target reset 45 T O request was aborted because of target reset requested by controller 46 Target did not respond properly to abort sequence 4B T O aborted due to operating mode change such as LVD to SE or SE to LVD displayed as Abort MdChg 50 Disk channel hardware failure displayed as DskChn Fail This may be the result of bad termination or cabling Voltage and Temperature Errors and Warnings Most voltage and temperature errors and warnings occur due to the enclosure Check the enclosure configuration first 9 14 Array Basics Chaparral s RAID controllers let you set up and manage disk arrays A disk array array is a group of disks that appears to the system as a single virtual disk This is accomplished through software resident in the RAID controller RAID Redundant Array of Independent Disks refers to disk arrays in which part of the array storage capacity may be used to store redundant information The redund
50. to the controller or an array has a problem You should correct the problem as soon as possible Table 9 1 defines each warning event and recommends the action you should take Table 9 1 Warning events Event Definition Recommended Action ARRAY One or more drives are down and Add a spare to the array or the spare CRITICAL the array is online but is no longer pool Then replace the bad drives fault tolerant See Adding a Dedicated Spare on page 6 2 or Adding a Spare to the Spare Pool on page 6 5 ARRAY More than one drive in a RAID Qor Replace the bad drive and restore OFFLINE volume set went down bringing the the data from backup array to an offline state This array is no longer accessible by the host BATT FAIL A warning condition in the battery Replace the battery INFO pack and or charging interface has been detected DRIVE DOWN An error occurred with the drive Add a spare to the array or the spare and it was downed removing it pool Then replace the bad drive from the active array See Adding a Dedicated Spare on page 6 2 or Adding a Spare to the Spare Pool on page 6 5 REPLACE The battery is approaching its three Replace the battery BATTERY year life span Troubleshooting Table 9 1 Warning events Continued Event Definition Recommended Action SDRAM CORR A correctable single bit SDRAM If this error occurs frequently ECC ECC error occurred replace the memory SPARE The dr
51. 1 on page 7 4 for information about each setting 3 Select the setting you want from each screen and press Enter The system confirms that you want to make the changes 4 Select Yes and press Enter to make the changes Configuring the Internal Host Port Hubs If you are using a JFS224 you can configure two settings on your enclosure if it has an internal hub amp Note Not all enclosures support these functions Configure internal hubs This option enables or disables the enclosure s internal FC hubs Enabling the hubs connects controller A s host port 1 and controller B s host port 0 to one hub and connects controller A s host port 0 and controller B s host port 1 to the other hub Disabling the hubs presents all four host ports directly to the enclosure s connectors In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller Connect internal hubs on failover This option enables or disables forcing the hub into a single loop when a failover occurs permitting access to all LUNs from either port on the enclosure This option is only available in dual port modes and when the internal hubs are enabled as described above In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller To configure the
52. 19 JSS122 active active single port dual host quad cable configuration C 19 JSS122 JFS224 User s Guide C 20 Stand Alone Connectivity Options JFS224 The JFS224 can be configured as a stand alone controller with a single host Fibre Channel port or with dual host Fibre Channel ports In the stand alone configuration arrays are represented mapped to each Fibre Channel port This allows for alternate path redundancy The single port configuration is trivial and is not shown in these examples The examples show the JFS224 setup in a stand alone dual port configuration In the following configuration a single host with a dual port Fibre Channel interface connects directly to the JFS224 controller This represents a low cost high performance configuration The host will see arrays mirrored on both ports and can access any array from both ports simultaneously The enclosure in this example is not required to contain internal port bypass devices Enclosure Controller Expansion Channels Loop 1 Ext Port 1 Disk _ Host PC IF Host 0 Chan 0 8 Disk Dual Port Chan 1 FC HBA Disk Chan 2 Ext Port 2 Disk IF Host 1 Chan 3 Figure C 20 JFS224 in stand alone dual port single host configuration Theory of Operation In the following configuration two hosts with a single port Fibre Channel interface connect directly to the JFS224 controll
53. 4 Support for up to 45 JSS122 or 60 JFS224 disk drives organized in up to 24 arrays and a total of 64 logical unit numbers LUNs All SCSI channels support backward compatible Ultra80 LVDS and Ultra Fast Asynchronous single ended SCSI modes All SCSI channels support SPI 3 Cyclic Redundancy Check CRC and Domain Validation Support for cache memory options from 64 MB up to 512 MB using standard PC 133 compatible SDRAM DIMMs must be qualified by Chaparral the current list can be found on the Chaparral Technical Support Web site http www chaparralnet com and click Support Support for RAID levels 0 1 0 1 3 4 5 50 and just a bunch of disks JBOD Online capacity expansion allowing reconfiguration without interruptions Advanced disk utilities array verification and recovery and spare pooling Embedded Configuration Application Programming Interface CAPI for management and Graphical User Interface GUI development Firmware can be upgraded either in band over SCSI JSS122 or FC JFS224 or out of band via RS 232 Continuous runtime diagnostics for warnings and automatic shutdown for out of spec temperature and voltages battery failures and internal errors For additional features and detailed specifications see Appendix B Features and Specifications About This Guide This Users Guide describes how to install and configure your Chaparral controller It assumes that you are familiar with the basic functions of yo
54. 53 52 SET DATE TIME 15 53 53 CACHE INIT DONE Cache clean Controller A 15 53 54 HEARTBEAT FOUND l Event Log Use up down arrows PageUp PageDown End Home Dump ESC Board Temp 86 F lt 30 C A A MODE Controller A Wed Dec 13 16 39 13 2000 2 Press u to page up or d to page down in the log 3 Keep pressing CTRL E to page through the other information screens and return to the menu Capturing the Event Log You can also capture the entire event log which saves it to a file on your hard drive This is useful if you want to print the log or attach it to an e mail message The steps below use HyperTerminal as the terminal emulator software If you use a different terminal emulator your procedure may be different To capture the event log file 1 With HyperTerminal up and running as your RS 232 interface terminal press CTRL E until the event log displays 2 From the Transfer menu in HyperTerminal select Capture Text The Capture Text window displays Monitoring System Status 3 Enter the path and file name you want to use to store the log file contents Save the file with a txt file extension 4 Click Start 5 Press P on the keyboard to begin the transfer 6 From the Transfer menu in HyperTerminal select Capture Text The Capture Text window displays 7 Click Stop Displaying Hardware and Configuration Information You can display the controller s hardware and configuration information
55. 661 3 Press Esc to return to the Other Controller Menu screen 7 15 JSS122 JFS224 User s Guide 7 16 Shutting Down the Other Controller You can gracefully shut down the other controller Use this option in preparation for power down or replacement of the other controller You should always use the Shutdown Other option in preference to the Kill Other option To shut down the other controller 1 From the System Menu select Other Controller Menu and press Enter The Other Controller Menu is only available if the system is configured to run in Active Active mode The Other Controller Menu screen displays Select Shutdown Other and press Enter The system confirms that you want to make the change Select Yes and press Enter to make the change The other controller shuts down gracefully 4 Press Esc to return to the Other Controller Menu screen Shutting Down Both Controllers You can simultaneously and gracefully shut down both controllers Use this in preparation for a power down of both systems or replacement of both controllers To shut down both controllers 1 From the System Menu select Other Controller Menu and press Enter The Other Controller Menu is only available if the system is configured to run in Active Active mode The Other Controller Menu screen displays Select Shutdown Both and press Enter The system confirms that you want to make the change Select Yes and press Enter to make the
56. 9061 Available Id 12 8683MB SEAGATE 139133LCU Available Id 13 8761MB SEAGATE T39236LCU Available Menu Selection Help Select array drives Board Temp 75 F 24 C A A MODE Controller A Mon Nov 26 11 21 17 2000 4 9 JSS122 JFS224 User s Guide 4 10 6 Select the drives you want to use for the array and press Enter You select a drive by highlighting it and pressing Enter Each selected drive turns gray in the drive list After you press Enter for the number of drives you entered previously the system automatically goes to the next screen To skip a drive use the T or J key If the array is mirrored RAID 3 RAID 4 RAID 5 or RAID 50 and you have one or more drives left the Number of Spares screen displays If the Number of Spares screen displays enter the number of spares you want to add and press Enter This creates dedicated spares that can only be used by this array A dedicated spare drive will not be available for any other use For more information about spares see Chapter 6 Managing Spares If you do not want a spare enter 0 The Select Drives screen displays If the Select Drives screen displays select the drive you want to use as a dedicated spare and press Enter Only available drives that is drives that are not members of an array and are not assigned as a dedicated or pool spares display You can delete a dedicated spare from the array at any time For more information see
57. Active Dual Port mode Problem An active active controller pair hangs the host system during normal operation or after failing over Verify that all SCSI channels are connected cabled and terminated properly Problem An active active controller pair always fails over after booting up Verify that the controller that is failed killed is set to its default configuration Active Active Dual Port mode Verify the same SDRAM DIMM sizes are in both controllers Active active controllers require the same SDRAM DIMM size Problem One controller of an active active controller pair displays the following message when booting Other Controller is attempting to reset this controller This message displays on failback if the failed controller has not been replaced The message continues to display whenever you boot the working controller and change its configuration To eliminate the message replace the failed controller Controller Problems Problem The controller s STATUS LED does not turn on Check that 5 V power is being applied to the controller Check the RS 232 interface for power on initialization and diagnostics errors Check the Disk Array Administrator for outstanding events Problem The controller s STATUS LED is on but there is no RS 232 display Check that the RS 232 cable is the correct type straight through Check that the terminal emulation utility on the computer system is properly configured See Accessing t
58. CP FCP defines an FC mapping layer FC 4 that uses FC PH services to transmit SCSI command data and status information between a SCSI JSS122 JFS224 User s Guide initiator and SCSI target FCP enables transmission and receipt of SCSI commands data and status across the FC using standard FC frame and sequence formats Fibre Fibre is a generic FC term that refers to all transmission media types specified in the FC Physical Layer standard FC PH such as optical fiber copper twisted pair and copper coaxial cable Fibre channel FC FC is a bidirectional point to point serial data channel structured for high performance capability In the physical sense an FC is an interconnection of multiple communication points called N_ Ports by a switching network fabric FC transports incoming data from devices by reading the buffer information packaging it and sending the information across the fabric Although FC is a generalized transport mechanism that has no protocol of its own or native I O command set it can transport any existing upper level protocol such as SCSI and IP FC offers high speed data transfer rates up to 1 Gbps FC is most commonly used to connect clustered servers to storage systems ANSI has developed standards for FC Gigabit interface converter GBIC A GBIC also referred to as a Physical Link Module is a physical component that manages functions of the FC 0 layer This layer consists of the physical charact
59. Controller B Controller A LUNs LUNs Controller B fails Controller A LUNs Controller B LUNs Inactive Inactive In Active Active Single Port and Dual Port modes arrays can be accessed only by the controller that currently owns them One controller will have no visibility to the other controller s arrays If a controller fails the surviving controller will take ownership of all arrays Pool spares and unassigned disks are visible to both controllers The two controllers communicate via the back end disk buses Although many different message types are sent between the two controllers the majority of the data is write cache data In the default write back caching mode any data that the host writes to a controller is copied to the other controller before good status is returned to the host By mirroring the data if a controller fails the surviving controller will have a copy of all data that has not been written to the disk controllers communicate with each other using SCSI initiator IDs 6 and 7 on the disk channels The values of 6 and 7 are mandatory defaults to guarantee good communication between the two controllers and you cannot change them Do not configure any other devices to IDs 6 and 7 on the disk channels or the active active configuration will fail to operate Caution When in Active Active Single Port or Dual Port mode the two JSS122 JFS224 User s Guide C 8 Controller A Active Active Dual Port
60. Delete an Array rrayi Parti All Partitions Menu E Reset Statistics Pool Spare Menu F rrayi a Display Drives P View Statistics Delete this Partition E Uiew partition statistics selected sample rate Notes Queue depth Number of host queued commands I70 block size of last host access 10 Size Menu Selection Help The controller updates these at the user Board Temp 79 F lt 26 C gt FAILED OVER 4 30 Cntlr A Mon Sep 17 15 31 05 2061 Creating and Managing Arrays and Partitions 3 Select View Statistics and press Enter The statistics screen displays showing the statistics of the partition you selected rrayi Number of reads Number of writes Sectors read Sectors written Queue depth I0 size ll Delete this Partition Menu Selection Help View partition statistics The controller updates these at the user selected sample rate Notes Queue depth Number of host queued commands IO Size 1 0 block size of last host access Board Temp 79 F lt 26 C FAILED OVER Cntlr A Mon Sep 17 15 31 16 2001 4 Press Esc to return to the statistics menu Resetting Partition Statistics You can reset the following partition statistics to zero Read Write SecRd SecWt T O Size that are included in the aggregate statistics See Displaying Overall Statistics on page 5 9 Note Resetting statistics here a
61. Deleting a Dedicated Spare on page 6 3 You select a drive by highlighting it and pressing Enter Each selected drive turns gray in the drive list After you press Enter for the number of drives you entered previously the system automatically goes to the next screen To skip a drive use the T or J key If the array you are creating is a RAID 3 RAID 4 RAID 5 RAID 10 or RAID 50 the Chunk Size screen displays ystem Menu Array Menu dd an Array jration Menu Add an Array Chunk size s Menu Delete an Array 64KB g Menu Pool Spare Menu 32KB ntroller Menu Display Drives 16KB Restart All Partitions Menu Selection Help Select the chunk size for this array The chunk size is the amount of contiguous data that is written to an array member drive before moving to the next member drive in the array For typical applications larger chunk sizes achieve better bandwidth Use of the largest chunk size is recommended Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 11 21 39 2000 9 10 11 Creating and Managing Arrays and Partitions If the Chunk Size screen displays select the chunk size and press Enter The chunk size is the amount of contiguous data that is written to an array member before moving to the next member of the array To determine the appropriate chunk size refer to your operating system documentation For example the default chunk size for Windows NT and many other oper
62. Free Partition screen 4 15 SEP Configuration screen 8 11 SEP LUNs screen 8 11 SEPs changing LUNs for 8 10 changing the enclosure status setting 8 12 changing the polling interval 8 12 changing the slot status setting 8 12 changing the temperature status setting 8 12 defined D 1 LUNs for 7 7 serial port connecting to 2 3 settings for 2 3 3 1 Set Battery Age 7 24 Set Date screen 7 3 Set Date Time 7 2 7 3 Set Date Time screen 7 2 Set Time screen 7 3 Shutdown Both 7 16 Shutdown Both menu option 7 16 Shutdown Other 7 16 Shutdown Restart 7 2 shutting down both controllers 7 16 the other controller 7 16 7 17 shutting down the controller 7 1 size expanding for arrays 4 20 expanding for partitions 4 26 4 33 Slot Flags screen 8 13 Slot Flags defined 8 12 slot status setting changing for enclosures 8 12 SMART Index disabling changes to 8 7 enabling changes to 8 7 SMART screen 8 7 software accessing to configure the controller 3 1 menu tree 3 4 navigating in 3 3 spares adding dedicated 6 2 adding pool 6 5 defined 6 1 deleting dedicated 6 3 deleting pool 6 6 displaying pool 6 6 enabling automatic 6 3 enabling dynamic 6 3 use in reconstructing 6 1 specifications B 1 speed changing for SCSI channels 7 9 checking that can operate at Ultral60 7 9 Stand Alone Dual Port mode configuration examples C 3 C 6 defined 7 13 B 2 C 2 C 6 Stand Alone mode connectivity options C 16 C 20 Stand Alone Single Port mode configuration
63. JSS122 JFS224 External RAID Controller User s Guide NETWORK STORAGE Copyright 1998 1999 2000 2001 Chaparral Network Storage Inc Document Number 07 0032 005 B This document covers the JSS122 and JFS224 All rights reserved No part of this publication may be reproduced without the prior written consent of Chaparral Network Storage Inc 7420 E Dry Creek Parkway Longmont Colorado 80503 http www chaparralnet com Trademarks Chaparral Network Storage Inc and the Chaparral logo are trademarks of Chaparral Network Storage Inc AHA and AIC are trademarks of Adaptec Inc Windows is a registered trademark and Windows NT is a trademark of Microsoft Corporation in the U S and other countries used under license All other trademarks are the property of their respective companies Changes The material in this document is subject to change without notice While reasonable efforts have been made to ensure the accuracy of this document Chaparral Network Storage Inc assumes no liability resulting from errors or omissions in this publication or from the use of the information contained herein If you would like to provide comments or suggestions on the quality and or accuracy of this manual please contact Chaparral at http www chaparralnet com manuals Chaparral reserves the right to make changes in the product design without reservation and without notification to its users Comments and suggestions can be
64. L point to point and switched fabric support JFS224 Device interface JSS122 Two or three 160 MB sec Ultral60 SCSI device channels the channels default is two channels JFS224 Four 160 MB sec Ultral60 SCSI device channels SCSI protocol Narrow 8 bit or Wide 16 bit Fast 20 MB sec Ultra 40 MB sec Ultra2 80 MB sec Ultral60 160 MB sec Advanced RAID m Active active host independent failover failback in the 2x2 JSS122 features or 2x4 JFS224 active active configuration Write back data cache memory bus 800 MB sec bandwidth On line capacity expansion Up to 24 independent logical arrays per subsystem Spare pooling and dedicated spares array verification Controller drive hot swap supported Array status monitoring adjustable stripe width automatic sector remapping a User settable priority for array Reconstruct Verify Create and Expand operations a Arrays configurable as RAID levels 0 1 10 3 4 5 50 JBOD m On line array initialization B 1 JSS122 JFS224 User s Guide Table B 1 JSS122 and JFS224 features Continued Advanced hardware features 64 MB to 512 MB PC 133 compatible SDRAM DIMM ECC protected 16 MB ECC protected onboard SDRAM processor memory 2 MB onboard Flash memory for upgradable firmware Integrated Nickel Metal Hydride NiMH cache battery backup interface Advanced FC features JFS224 Dual port embedded multitasking RISC protocol engines 1 gigabit se
65. LUN assignment Board Temp 75 F 24 C A A MODE Controller A Mon Nov 20 11 33 19 2000 4 16 Creating and Managing Arrays and Partitions 7 Select the LUN for the partition and press Enter The LUN that displays is the suggested default LUN assignment Note Most Unix Linux and Macintosh operating systems require that amp the controller LUN be set to a higher value than all partition LUNs Before creating your first partition change the controller LUN to a higher value or choose NONE best choice if you are not using CAPI to manage the arrays This allows your first partition to be seen at LUN 0 The system warns you about the LUN for Unix and Macintosh as above the first time you create a partition Press Enter and the system asks if you want to be warned again Select No to avoid receiving this warning again otherwise select Yes to be warned the next time you create a partition The system confirms that you want to make the change 8 Select Yes and press Enter Verifying an Array The Verify function allows you to verify the data on the specified array RAID 3 RAID 4 RAID 5 RAID 50 and mirrored arrays only RAID 3 RAID 4 RAID 5 and RAID 50 Verifies all parity blocks in the selected array and corrects any bad parity Mirrored Compares the primary and secondary drives If a mismatch occurs the primary is copied to the secondary You may want to verify an array when you suspect there is a p
66. Nothing is displayed on the terminal emulator screen The probable cause of this problem is a bad RS 232 cable connection or swapped transmit receive lines If the cable is properly connected on both ends try a null modem adapter that will reverse the RS 232 transmit and receive signals The need for a null modem adapter depends on both your enclosure and the RS 232 cable you are using 9 1 JSS122 JFS224 User s Guide Problem Screen is updated but will not respond to keystrokes Disable hardware flow control on the terminal or terminal emulator The controller supports XON XOFF flow control and works properly in most cases with no flow control Problem Screen looks correct but clock is not being updated Check to be sure that the enclosure containing the controller is still powered on If you are using XON XOFF press the CTRL key and Q key simultaneously Problem Screen is updated and menus appear correctly but boxes around menus look incorrect Try a different font in your terminal emulator program such as Terminal If you cannot find a font that looks correct set ASCII Display to Yes in the Display options item of the Configuration Menu Problem The host system does not see the controller JFS224 only Verify in the CTRL E status screen that there is a Host Channel FC World Wide Name that is a valid Verify that the port ID is active and a valid arbitrated loop port address AL_PA is assigned Verify the array LUN numb
67. Option Configuration Backoff Percent Utility Priority Alarm Mute New Sample Rate Restore Defaults Utilities Menu Rescan Hot Swap Pause Hardware Information LUN Information Drive Utilities Menu Overall Statistics Other Controller Menu Other Information Kill Other Unkill Other Shutdown Other Shutdown Both Set Date Time Set Time Set Date Host Configuration Enable Disable Target ID Controller LUN Topology Loop or Point to Point Link Speed Reset on Failover Channel Configuration Channel Bus Speed Disable Domain Validation SEP LUNS SEP Settings SEP Settings Poll Rate SEP LUN Temperature Slot Flags Global Flags Disk Configuration Write back Cache SMART Option Configuration Operating Mode Cache Lock Battery Trust Array Dynamic Spare Configuration Enclosure Features Drive Utilities Menu Blink Drive LED Clear Metadata Down Drive Test Unit Ready Display Drive Cache Overall Statistics View Statistics View R W Histogram Reset All Statistics Figure 3 2 Menu tree continued Creating and Managing Arrays and Partitions Using the Disk Array Administrator you can create and manage arrays and partitions You can perform the following array related functions m Create arrays see page 4 1 m Manage arrays see page 4 12 m Manage partitions see page 4 26 Creating Arrays You can create an array anytime Table 4 1 describes the drive requirements for each RAID level Table 4 1
68. Partitions Menu I Menu Selection Help Use the up and down arrow keys to select an array from the list Board Temp 77 F 25 C A A MODE Controller A Wed Nov 29 15 22 13 2000 2 Select the array you want to delete and press Enter The system asks you to confirm the deletion 3 Select Yes and press Enter 4 25 JSS122 JFS224 User s Guide Managing Partitions 4 26 The Disk Array Administrator software lets you manage partitions in a variety of ways You can View partition status information see page 4 27 Add a partition see page 4 15 Expand a partition see page 4 33 Change a partition name see page 4 34 Change a partition LUN see page 4 35 Delete a partition see page 4 35 Understanding Partitions When you create an array you can choose to make the array all one partition or set up the array for multiple partitions Using multiple partitions lets you create one very large array making efficient use of your disk drives For example you could create one very large RAID 5 array and assign one dedicated spare to the array This minimizes the amount of disk space allocated to parity and spares compared to the space required if you created five or six smaller RAID 5 arrays Once you set up an array for multiple partitions you must create each partition by setting the partition size and assigning the partition a LUN You can also give each partition a name We recommend assigning names
69. Select the chunk size for this array The chunk size is the amount of contiguous data that is written to an array member drive before moving to the next member drive in the array For typical applications larger chunk sizes achieve better bandwidth Use of the largest chunk size is recommended Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 11 21 39 2000 If the Chunk Size screen displays select the chunk size and press Enter The chunk size is the amount of contiguous data that is written to an array member before moving to the next member of the array To determine the appropriate chunk size refer to your operating system documentation For example the default chunk size for Windows NT and many other operating systems is 64 KB If you are using the array for a database with very small records you may want to use a smaller chunk size If you are using a JSS122 or JFS224 and the array you are creating is a RAID 3 RAID 4 RAID 5 RAID 50 or Mirrored the Array Init Options screen displays The current option has an next to it If the Array Init Options screen displays select the option you want and press Enter Offline Initialization Using this option means you must wait for the array initialization process to finish before using the array It uses the zero method to create the array which is faster than the verify method Online Initialization Using this option lets you begin using the a
70. Taking Down a Drive caxuineisieunride nana aiai i 8 8 Testing a Drive c cexdabetetsatates ottenera yates tiencctaa R uaarictaasueenienies 8 9 JSS122 JFS224 User s Guide vi Managing SAF TE Enclosures ccccccesccesseeseeescecseeseececeeeeeeeeseecssenseenseenseeenes 8 9 Setting the SEP LUN seupsniodssneacrenaeunmaacasutern toes ARA 8 10 Changing the Additional SEP Settings ccccccccsccsseceseeeeeeeeeesseesseeeees 8 12 Troubleshooting Chaparral Technical Support cccecccccsseseesseeseceeceeeeeseeeseenseceseceeeeeseenseensees 9 1 Terminal Emulator and COM Port Problems 0 ccccecceesseeseeseesteeteceteeeeeeenes 9 1 Host Fibre Channel Problems saiisine AE 9 2 Array Problems s isanseivaiaieaeiotacentsatteninialgcnitakaiaaudabiectencecsiaianarian 9 2 Host SCSI Channel Problems cccccecccescseseeeeceseeeseeceeceeeeeeesseeceenaeeeeeeeeennes 9 4 Device SCSI Channel Problems o0 cccccecceessesscesseesseeeeceeceeeeeseecseeneeneenseeenes 9 5 Problems During Bootup ccccceccessssesseeeeeeeceseeaeeaeeeeeeeeaeceeeeeaeeeseeeeaeeaeeaeees 9 5 Controller Problems scsssrsacsusateuroccavesrec sss ncean nats suln anata menareoaes 9 6 Replacing the Controller seriinin a 9 7 Replacing a Down Controller When in Active Active Mode eee 9 8 Warning and Error Event cicdissevsciaiecnsicvtaiaien wagerseertaniunddnspeadantintandsheatesius 9 8 Wall GS spaan nA EE AAE A memaiots 9 8 ETOS g
71. The Configuration Menu displays 2 Select Utility Priority and press Enter The Utility Priority screen displays The current setting is marked with an next to it ystem Menu tility PrioritySju Set Date T HIGH Percent Host Confi MEDIUM Priority Channel Co LOW ute SEP Config Configuration Disk Config Defaults Menu Selection Help Allows change in the priority at which utility operations complete when there are competing I 0 operations Setting the priority to high causes utility operations to complete faster at the expense of host I 0 s The following are utility operations Disk Reconstruction Array Initialization Array Verification and Capacity Expansion OCE gt Board Temp 77 F lt 25 C FAILED OVER Cntlr A Mon Sep 17 15 28 00 2001 3 Select the option you want and press Enter Rescanning All Channels You can tell the controller to scan all disk channels for new or removed disk drives You can use this option when you install or remove drives The rescan temporarily pauses all T O processes and then resumes normal operation If you are using an enclosure with a SEP the controller will perform a rescan automatically With a SEP the controller will detect removed drives almost immediately however installed drives will be detected after a three minute delay This delay is to allow the new drives to spin up Note If you are installing a new drive wait for the drive to
72. This is where you can see what version of the firmware you have Chaparral technical support personnel may request this information You can display the hardware and configuration information two ways m Hardware information only m Hardware and configuration information Table 5 1 lists the configuration information that is available Table 5 1 Configuration information Group Field What displays Field What displays HOST 0 Active Port Status of the port based onthe FC Speed 1 Gb s or 2 Gb s as set in HOST 1 or Passive operating mode as set in the the Disk Array Port Disk Array Administrator Administrator software software Target ID SCSI ID of controller as set in the Disk Array Administrator software Topology Loop Point to Point or Auto JFS224 Detection as set in the Disk only Array Administrator software Node WWN FC World Wide Name for JFS224 node only Port WWN FC World Wide Name for JFS224 port only Loop ID SOFT ora specific numberas Current Currently assigned value JFS224 set in the Disk Array or Inactive if the FC link only Administrator software is not active 5 5 JSS122 JFS224 User s Guide Table 5 1 Configuration information Continued Group Field What displays Field What displays FC Addr 24 bit FC address or None if AL_PA Currently assigned value JFS224 the FC link is not active JFS224 or None if the FC link is only only
73. a drive that was previously a member of an array Drives in this state display Leftover in the Display Drives screen After you clear the metadata you can use the drive in an array or as a spare 8 3 JSS122 JFS224 User s Guide 8 4 To clear metadata from a drive 1 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays 2 Select Drive Utilities Menu and press Enter The Drive Utilities Menu displays 3 Select Clear Metadata and press Enter The Select Drive screen displays showing drives that are not array members 4 Select the drive you want and press Enter You can now use this drive in an array or as a spare Enabling and Disabling Write back Cache You can control the write back cache setting for all of your disk drives at once Changes take effect after the next rescan or reboot In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller This can be set to ENABLE DISABLE or DON T MODIFY which means the controller should not change any drive s write back cache settings The default setting is DISABLE Typically if your drives are part of an array you do not want to turn on write back cache on the drives The controller is already using write back cache to improve performance Turning on write back cache on the disk drive may improve performance in some cases depending on th
74. a menu item Press the T or 4 and press Enter or Press the letter that is a different color or highlighted in a menu item hot key Return to the previous menu or screen Press Esc CTRL Z or without saving your changes Scroll through the available choices fora Press the T or J setting Bypass the list of recent events Press Tab IA Note After four minutes of inactivity the Disk Array Administrator software times out and returns to the initial screen 3 3 JSS122 JFS224 User s Guide 3 4 Changing the Screen Display After you have accessed the Disk Array Administrator software you can change the screen display using a combination of keystrokes as shown on the System Menu Table 3 2 lists the keystrokes required to change various screen displays Table 3 2 Changing screen displays Select Function Ctrl A Toggles between ANSI and VT100 character sets use VT100 for legacy systems Ctrl B Toggles between black and white and color Ctrl E Toggles between the event log hardware information and configuration information screens Ctrl H Toggles between the Help screen and list of shortcut keys Ctrl R Refreshes screen Ctrl Z Esc or Escapes or quits the current menu Disk Array Administrator Menu Tree Figure 3 1 on page 3 5 and Figure 3 2 on page 3 6 describe the complete Disk Array Administrator menu hierarchy In the Disk Array Administrator menu options that are no
75. also posted The CTRL E configuration screen shows the current and native WWNs for the local controller if they do not match The Other Controller Information menu shows the other controller s node and port WWNs Also the serial number string returned by a SCSI Inquiry command returns the node WWN value instead of the actual serial number This allows a replacement controller to Theory of Operation also impersonate the failed controller s serial number so it appears unchanged from the host display of controller serial numbers is not affected When the system is in Active Active mode with a single controller booted and if the other controller is down and the controller that is up does not know the serial number of the down controller the surviving controller fabricates a unique WWN for the opposite controller based on its own serial number If the down controller is later repaired it will assume this fabricated and therefore non native WWN when it boots up Note You will see events in the event log when a controller starts using a amp non native WWN You should note that this has happened If some subsequent catastrophic event such a power loss occurs that causes both controllers to reboot and the servers or hosts do not reboot then the WWNs will change that is the native WWNs will be used When the WWNs change the host may be unable to find the controllers You must update the configuration on the servers with the n
76. anaging Arrays and Partitions 6 Enter the number of drives excluding spares you want in the array and press Enter The Select Drives screen displays If you are using Active Active mode the list includes all available drives that is drives that are not members of an array and are not assigned as a dedicated or pool spare on both controllers The screen includes the following information for each drive Channel SCSIID Drive capacity Drive manufacturer Drive model number Drive firmware revision Drive state Add an Array Select Drive lt s gt Chi Id 4 8683MB SEAGATE 139133LCU 76061 Available Id 11 8683MB SEAGATE 139133LCU R i Available Id 12 8683MB SEAGATE 139133LCU R 061 Available Id 13 8683MB SEAGATE ST39133LCU Available Id 12 8683MB SEAGATE ST39133LCU Available Id 13 8761MB SEAGATE ST39236LCU Available Menu Selection Help Select array drives Board Temp 75 F 24 C A A MODE Controller A Mon Nov 26 11 21 17 2000 7 Select the drives you want to use for the array and press Enter You select a drive by highlighting it and pressing Enter Each selected drive turns gray in the drive list After you press Enter for the number of drives you entered previously the system automatically goes to the next screen To skip a drive use the T or J key If the array is mirrored RAID 3 RAID 4 RAID 5 or RAID 50 and you have one or more drive
77. ant 6 1 JSS122 JFS224 User s Guide Managing Dedicated Spares Dedicated spares are unused disk drives that you assign as a spare to a specific array The disk must be as large as the smallest member of the array You cannot use a dedicated spare drive as a member of an array or as a pool spare Although using a dedicated spare is the most secure way to provide spares for your arrays it is also expensive to keep an idle drive assigned to each array An alternative method is to assign one or more idle drives to the spare pool See Managing the Spare Pool on page 6 4 Adding a Dedicated Spare You assign dedicated spare drives to a specific array If a member drive in the array fails the controller uses a dedicated spare drive to automatically reconstruct the array You can add dedicated spare drives to mirrored RAID 1 and RAID 10 and parity RAID 3 RAID 4 RAID 5 and RAID 50 arrays when you create the array or afterward You can assign up to four dedicated spare drives to an array For more information about assigning spares when you create an array see Creating Arrays on page 4 1 amp Note You cannot add a spare that does not have enough capacity to replace the smallest member in the array To add a dedicated spare 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays 2 Select the array you want and press Enter The array menu displays 3 Select A
78. ant information lets you restore user data if a disk in the array fails The host system views the controller as a single SCSI disk drive It is actually an array of physical disks behind a RAID controller The controller is managed by software to appear as a single very large physical disk Depending on the array type the virtual disk has advantages in fault tolerance cost performance or a combination of these This section explains the different array types and the disk requirements for each type a e Tip Choosing the right RAID level for your needs will improve performance The following are examples of storage needs and appropriate RAID level Chaparral RAID controllers also provide methods of tracking statistical data to aid in the process See Chapter 5 Monitoring System Status Application RAID level Testing multiple operating systems or software development where Volume redundancy is not an issue Fast temporary storage or scratch disks for graphics page layout and RAID 0 image rendering Workgroup servers RAID 1 10 Video editing and production RAID 3 or 4 Network operating system databases high availability applications RAID 5 Very large databases Web server video on demand RAID 50 A 1 JSS122 JFS224 User s Guide Array Types Array types are defined by their RAID level a number from 0 through 5 a higher RAID level does not necessarily indicate a higher level of performance
79. apacity of the array is equivalent to approximately five 4 GB disks To maximize disk capacity use disks of similar size Mixing Disks on Different RAID Controller Channels The JSS122 has two or three device channels the JFS224 had three or four device channels An array can consist of disks on different channels of the same RAID controller JSS122 JFS224 User s Guide A 6 Features and Specifications The JSS122 is an Ultral60 SCSI to Ultral60 SCSI controller while the JFS224 are Fibre Channel to Ultral60 LVD Low Voltage Differential controllers All are designed for mission critical applications requiring the highest performance with uncompromised data reliability such as mid range and enterprise server storage The controllers maintain exceptionally high throughput and are ideally suited for high bandwidth data intensive applications such as electronic commerce digital video CAD seismic research digital prepress and 3 D imaging Table B 1 summarizes the specific technical features of the JSS122 and JFS224 products Table B 1 JSS122 and JFS224 features Onboard CPU Mobile Pentium II 333 MHz 256 KB on chip L2 cache Host device data JSS122 160 MB sec Ultra160 SCSI rate JFS224 2 Gbit full duplex also supports 1 Gbit full duplex JSS122 One or two 160 MB sec Ultral60 SCSI Channel 1x3 or 2x2 Host interface channels the default is two channels JFS224 Two 2 Gbit Fibre Channel ports FC protocol FC A
80. array The default is one second To change the sample rate 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays 2 Select New Sample Rate and press Enter The New Sample Rate screen displays 3 Enter the sample rate and press Enter Changing the Alarm Mute Setting You can enable or disable the audible alarm that sounds when the controller becomes too hot detects low or high voltage or an array becomes critical or offline Changing the mute setting lets you turn off the alarm when it is sounding You should turn it back on after resolving the problem The alarm sounds for temperature or voltage conditions events Warning events are generated when the temperature or voltage enters the warning range Shutdown events are generated when the temperature or voltage enters the shutdown range After reaching the shutdown range the controller will not function You must resolve the problem and reboot the controller If the problem is not resolved it will shut down again Alarm conditions trigger an event message that displays in the Disk Array Administrator software window and in the event log See Displaying the Event Log on page 5 2 In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller Table 7 3 shows the temperature and voltage thresholds for each alarm and what to do to reso
81. array you want and press Enter The array menu displays 3 Select Add a Partition and press Enter The Select Free Partition screen displays with a list of free partitions A free partition is free space that has not yet been partitioned or space that had a partition that was deleted Terea Menu Array Menu Configuration Menu 5 elect Free Partition I Arrayi Freei R UP 18GB Unpartitioned Area Expand Function Add a Partition Add Spare Delete a Partition Delete Spare All Verify Function Partition Menu Menu Selection Help Select a free partition area from the list This free area will provide the space to add the new partition You may use all or part of the free area for the new partition Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 14 56 13 2000 4 15 JSS122 JFS224 User s Guide 4 Select the free partition you want to use The partition size screen displays Chaparral Disk Array Administrator ystem Menu frray Menu Configuration Menu l rrayi Dele Array Status Change Array Name dd a Partition 18 981MB Remaining GMB Maximum 18 981MB gt Add Spare Delete a Partition Delete Spare Menu Selection Help Enter the size of the new partition in megabytes MB gt The menu displays the number of MB remaining in the free area the maximum number of MB that can be used The number of MB remaining is updated on the f
82. ating a Multiple Partition Array You can create an array that is set up for more than one partition Note Once you create a multiple partition array you must create at least one partition before you can use the array See Adding a Partition on page 4 15 Multiple partition arrays work well when you have very large disk drives and you want to make the most efficient use of disk space for fault tolerance parity and spares For more information see Understanding Partitions on page 4 26 To create a multiple partition array 1 From the System Menu select Add an Array and press Enter The Enter Array Name screen displays ystem Menu Array Menu Configuration Menu Add an Array Utilities Menu Delete an Array Event Log Menu Pool Spare Menu Other Controller Menu Display Drives Shutdown Restart ALL ee el Array Menu Selection Help Enter array name 16 characters or less recommended Names longer than l 16 characters may be truncated in certain displays Board Temp 73 F 23 C A A MODE Controller A Mon Nov 26 11 17 31 2000 JSS122 JFS224 User s Guide 4 8 2 Enter a name for the array and press Enter You can use up to 20 characters You can include any characters in the name including spaces If you do not want to name the array you can just press Enter You can add or change the name later The system asks if you want to create one partition now for the entire array Select No to
83. ating systems is 64 KB If you are using the array for a database with very small records you may want to use a smaller chunk size If the array you are creating is a RAID 3 RAID 4 RAID 5 RAID 50 or Mirrored array the Array Init Options screen displays The current option has an next to it If the Array Init Options screen displays select the option you want and press Enter Offline Initialization Using this option means you must wait for the array initialization process to finish before using the array It uses the zero method to create the array which is faster than the verify method Online Initialization Using this option lets you begin using the array immediately after creating it while the array initialization process runs It uses the verify method to create the array which takes longer than the zero method The system confirms that you want to create the array Select Yes and press Enter A message notifies you that the array is being created and shows the progress of the initialization process The array initialization process takes from several minutes to more than an hour depending on the array type volume RAID 0 and RAID 1 are the fastest array size drive speed and other processes running on the controller You can press Esc to return to the Disk Array Administrator menus and perform other functions To check the progress of the array initialization select Array Menu from the System Menu The status
84. ator Using the RS 232 Serial Port You can access the Disk Array Administrator software using the RS 232 serial port You must use a straight through serial cable You cannot use a null modem cable Configure the RS 232 port in your terminal emulator software using the following settings Setting Value Terminal Emulation VT 100 or ANSI for color support Font Terminal Translations None Columns 80 3 1 JSS122 JFS224 User s Guide 3 2 Set the communications parameters for the terminal program as follows Setting Value Baud Rate 115 200 Data Bits 8 Stop Bits 1 Parity None Flow Control Software XON XOFF Connector COMI typically To access the Disk Array Administrator software using the RS 232 serial port 1 From the computer connected to the controller start your terminal emulation software Be sure that your terminal emulation software is set to use the correct COM port on your computer See Terminal Emulator and COM Port Problems on page 9 1 for more details on how the controller can auto detect the baud rate 2 Press CTRL R This refreshes the screen The initial Chaparral Disk Array Administrator screen displays If an alarm condition has occurred you will see a message about the problem This message will also be stored in the event log Mon Nov 20 11 13 73 F 23 C gt Menu Selection Help No menu is active When no menu is active a rotating su
85. aution Disabling the battery life monitor is not recommended Battery failure during normal operation disables write back cache and leaves the system exposed to data corruption in the event of power loss To change the battery age or disable the battery life monitor 1 From the System Menu select Shutdown Restart and press Enter The system confirms that you want to shut down Select Yes and press Enter The system confirms that it has shut down Press Enter to reboot While the controller reboots hold down the spacebar on your keyboard The Flash Utility screen displays Press 6 for the Utility Menu The Utility Menu displays UTILITY MENU Clear Event Logs Clear Configuration Battery Life Monitor Options I 1 2 4 5 Clear Battery Back Up Cas if battery was removed B Disable SCSI Channel 3 J X Q Disable Fibre Channel Loop 2 Ignore Mirrored Configuration Reboot Quit Utility Menu lt back to loader menu Show this Menu Press 4 for Battery Life Monitor Options The Battery Life Monitor Menu displays BATTERY LIFE MONITOR MENU A New Battery Installed Set Battery Age Disable Battery Life Monitor Quit Battery Life Monitor Menu lt back to utility menu Show this Menu Press the letter of the option you want A New Battery Installed Use this option when you install a new battery to reset the battery age to zero The system confirms that you want to install a new
86. automatically be in Active Passive Dual Port mode For more information about Active Passive mode see Appendix C Theory of Operation MX Note If you select Stand Alone Single Port mode SCSI channel 3 will not be available if it has been disabled in the Flash Utility See Disabling SCSI Channel 3 on page 7 18 Disabling SCSI channel 3 forces the controller into Stand Alone Single Port mode 7 13 JSS122 JFS224 User s Guide 7 14 To change the operating mode 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu screen displays Select Option Configuration and press Enter The Option Configuration screen displays Set Date Time ption Configuration Host Configur Operating Mode Channel Confij Cache Lock SEP Configura Battery Disk Configur Enable Trust Array General LUN Z Dynamic Spare Config Enclosure Features Menu Selection Help Configure enclosure specific features Modification of these features depends on which manufacture s enclosure contains the controller board Board Temp 77 F 25 C gt Stand Alone Dual Port Tue Mar 13 13 33 36 2061 Select Operating Mode and press Enter The Operating Mode screen displays Select the option you want and press Enter See Table 7 2 on page 7 13 for the a description of the options The system confirms that you want to make the change Select Yes and press Enter to make the change
87. c G7342 or 2 gigabit sec G8342 Fibre Channel arbitrated loop and switched fabric support Full duplex send and receive payload buffers capable of 1 gigabit sec speed Supports 64 bit PCI data path to deliver bandwidth up to 266 MB sec per channel m Class 3 connection with FCP SCSI protocols class 1 and 2 capable Greater than 500 concurrent active exchanges with rapid command context change Advanced SCSI features Full backward SCSI compatibility 70 simultaneous commands and Command Queuing supported Reserve Release multihost ready up to 15 initiators with single controller Ultral60 SCSI for data transfer up to 160 MB sec Ultral60 SCSI connection for up to 15 devices per channel 14 in active active configuration Domain validation and CRC data protection with Ultra160 Configuration and SCSI JSS122 or Fibre Channel JFS224 or RS 232 serial interface management to ANSI terminal or terminal emulator m Configuration Application Programming Interface CAPI software developer s kit m Window and menu based text interface over RS 232 m Performance statistics monitoring event logging rebuild and verify utilities m SAF TE and SMART environmental monitoring support Advanced m Active Active Single Port Allows two controllers to cooperate in controller system operation in a fault tolerant manner operating mode m Stand Alone Dual Port Allows the host to achieve greater throughput configurations by balancing I
88. cate to the SEPs involves a direct connection over the SCSI path with the SEP LUNs that are under the controller s SCSI target ID using the standard SAF TE commands The user needs to set up the LUNs as described above in Setting the SEP LUN on page 8 10 The SEP LUNs are logical connections that pass the commands and data through the internal CAPI code and out to the physical SEPs on the disk channels The second method is to communicate over the SCSI path to the controller s target ID and the controller s bridge LUN which is always available using CAPI The host system can always talk to all of the SEPs all the time because the internal CAPI code always maintains a connection to all of the SEPs on any system By creating a custom host application using the CAPI SDK the application can determine when an individual enclosure component is out of operating specification and alert service personnel via e mails pager messages etc This has the added advantage of gaining access to all of the CAPI data and control features not just the SAF TE functions The additional CAPI features allow array creation array status and a multitude of other functions CAPI is described in detail in the CAPI Functional Specification Version 3 0 is available from Chaparral Network Storage at no cost Ask for the CAPI 3 0 spec part number 07 0003 305 The third method is to communicate using CAPI via the host s serial port to the configuration port on the con
89. cess 4 19 View Event Log 5 3 View Expand Status 4 22 View R W Histogram 5 11 View R W Histogram screen 5 11 View Statistics 4 31 5 10 View Statistics screen 5 10 View Verify Status 4 19 viewing aggregate statistics for all arrays 5 9 array status 4 12 cache status for disk drives 8 6 disk drives 8 2 drive status 4 14 8 2 events 5 2 LUN information 7 8 partition statistics 4 29 partition status 4 27 pool spares 6 6 read write histogram 5 9 status for drives 8 6 voltage alarm thresholds for 7 20 voltage monitoring B 4 W warning events 9 8 World Wide Names impersonation of C 12 write back cache disabling for disk drives 8 4 enabling for disk drives 8 4 locking setting on controller 7 21 viewing for disk drives 8 6 WWNs impersonation of C 12 Chaparral Network Storage Inc 7420 E Dry Creek Parkway Longmont CO 80503 1998 1999 2000 2001 Chaparral Network Storage Inc All rights reserved Chaparral and Chaparral logo are trademarks of Chaparral Network Storage Inc Printed in the U S 10 01 Document Number 07 0032 005 B
90. change Both controllers shut down Press Enter at the same time on both controllers to reboot them Configuring the Controller Killing the Other Controller You can force nongracefully the other controller offline causing the local controller to assume control of its arrays regain control of the other controller Use of Kill Other may disrupt host 1 O activity If the other controller needs to be taken offline you should either try a local shutdown or use the Shutdown Other option first Caution You should only use the Kill Other option as a last resort to To kill the other controller 1 From the System Menu select Other Controller Menu and press Enter The Other Controller Menu is only available if the system is configured to run in Active Active mode The Other Controller Menu screen displays 2 Select Kill Other and press Enter The system confirms that you want to make the change 3 Select Yes and press Enter to make the change The system confirms that the change is made 4 Press Esc to return to the Other Controller Menu screen Unkilling the Other Controller You can bring the other controller back online by allowing it to complete booting This option is primarily used to allow a controller that was previously killed either due to errors or manual action to come back online replaced by a different controller the surviving controller will Note If the other controller was unplugged then plu
91. ciated with the new partition The first number in the selection list is the recommended LUN assignment Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 11 19 38 2606 4 Select the LUN for the array and press Enter The LUN that displays is the suggested default LUN assignment Note Most Unix Linux and Macintosh operating systems require that amp the controller LUN be set to a higher value than all array LUNs Before creating your first array change the controller LUN to a higher value or choose NONE best choice if you are not using CAPI to manage the arrays This allows your first array to be seen at LUN 0 The system warns you about the LUN for Unix and Macintosh as above the first time you create an array Press Enter and the system asks if you want to be warned again Select No to avoid receiving this warning again or select Yes to be warned the next time you create an array The RAID Type screen displays Array Menu ation Menu Add an Array s Menu Delete an Array g Menu Pool Spare Menu ntroller Menu Display Drives 7Restart All Partitions MIRRORED Menu Selection Help Select the RAID level for the new array Choose the RAID level carefully based on the intended use of the array and the degree of drive failure protection desired Consult the User s Guide for an in depth discussion of RAID levels Note Volume is very similar to JBOD except that it contains metadata Boar
92. closure s environment and component status By maintaining a communications link between the controller and the SAF TE Processor SEP over the SCSI disk channels the controller can detect hot swapping of disk drives and can continuously indicate the health of disk drives array members and overall array status conditions to the user The SEP also allows the host system to inquire about environmental conditions such as temperature power supply and fan status The requests from the host system are sent to the RAID controller which passes them through to the SEP The reply data from the SEP is passed through the controller back to the host system This allows the host system to monitor the health of the enclosure and its components If the host system is configured with an enclosure specific host application the application can determine when an individual enclosure component is out of operating specification and alert service personnel via e mails pager messages etc Enclosure Considerations If the enclosure does not contain a SEP then the controller does not activate its internal SAF TE firmware This does not affect how the internal RAID code operates it only means that the controller cannot signal individual disk slot status and array health status to the user via the enclosure indicators However if the enclosure is equipped with one or more SEPs the controller can provide a wealth of information to the user via the enclosure in
93. configuration also provides a lower cost two way clustering solution because no switch is required The enclosure in this example requires internal port bypass devices with dual connections per port Enclosure Host PC Controller A Active Active Single Port Ext Dual Port M gt F Port FC Port 1 FC HBA Host 0 Ext Bypass Active j IF Disk FC Port 2 Channels Host 1 Passive Kill Unkill amp Presence FC Port 1 Host 1 Host PC Passive i Ext Disk Channels Dual Port i Port g laa FCHBA g p Ext Bypass Active IF Controller B Active Active Single Port Figure C 26 JFS224 in active active single port dual host configuration C 23 JSS122 JFS224 User s Guide C 24 SAF TE Implementation This section describes the implementation of the SCSI Accessed Fault Tolerant Enclosures SAF TE Interface Specification and how the user can adjust specific parameters The Chaparral controller is fully compliant with the SAF TE Interface Specification 1 04 R041497 For information about configuring the SEP settings see Managing SAF TE Enclosures on page 8 9 What Is SAF TE and What Are SEPs SAF TE provides a standardized nonproprietary method for integrating the Chaparral controller into an enclosure that supports status signals hot swapping of the hard drives and monitoring of the en
94. create a multiple partition array and press Enter If you want to create a single partition array see Creating a Single Partition Array on page 4 2 The RAID Type screen displays dd an Array RAID type RAIDG Array Menu ation Menu Add an Array RAID3 s Menu Delete an Array RAID4 g Menu Pool Spare Menu RAIDS ntroller Menu Display Drives RAIDS 7Restart All Partitions VOLUME MIRRORED Menu Selection Help Select the RAID level for the new array Choose the RAID level carefully based on the intended use of the array and the degree of drive failure protection desired Consult the User s Guide for an in depth discussion of RAID levels Note VYolume is very similar to JBOD except that it contains metadata Board Temp 75 F lt 24 C gt A A MODE Controller A Mon Nov 26 11 20 04 2000 4 Select the array type RAIDO RAID3 RAID4 RAIDS RAID50 VOLUME a single drive similar to just a bunch of disks JBOD except that it includes metadata or MIRRORED and press Enter amp Note A RAID 10 array is created when there are more than two drives in a mirrored array See Appendix A Array Basics for more information If you selected RAID 50 as the array type the Select RAID 50 Array Size screen displays not shown with all possible configurations for the array and drive combinations Select the configuration you want press Enter and skip to step 7 Creating and Managing Arrays and Partitions
95. ct reads 32 63 sect reads reads reads reads reads 1024 2047 reads 2048 above writes 1 sector Menu Selection Help View the histogram statistics summarized across all storage LUNs in the controller The histogram tells how many read and write operations of a certain size have been requested by the host You can use this display to tell the I O size distribution of a particular host application Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 20 14 52 27 2000 4 Press Esc to return to the Overall Statistics screen Resetting Overall Statistics You can also reset all of the overall statistics back to zero You may want to reset the statistics if you are monitoring performance or doing benchmark testing amp Note Resetting statistics here also resets the statistics for each individual partition See Resetting Partition Statistics on page 4 31 To reset overall statistics 1 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays 2 Select Overall Statistics and press Enter The Overall Statistics screen displays 3 Select Reset All Statistics and press Enter The system confirms that you want to make the change 4 Select Yes and press Enter The system confirms that the statistics have been cleared and returns to the Overall Statistics screen 5 11 JSS122 JFS224 User s Guide 5 12 Managing Spares Chaparral RAID
96. d Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 11 26 64 2000 4 3 JSS122 JFS224 User s Guide 4 4 5 Select the array type RAIDO RAID3 RAID4 RAIDS RAID50 VOLUME a single drive similar to just a bunch of disks JBOD except that it includes metadata or MIRRORED and press Enter amp Note A RAID 10 array is created when there are more than two drives in a mirrored array See Appendix A Array Basics for more information If you selected RAID 50 as the array type the Select RAID 50 Array Size screen displays not shown with all possible configurations for the array and drive combinations Select the configuration you want press Enter and skip to step 7 If you selected any array type other than RAID 50 the Number of Drives screen displays Chaparral Disk Array Administrator ystem Menu Array Men dd an Array ion Menu Add an Arj Number of Drives 2 enu Delete an enu Pool Spare oller Menu Display Drives Shutdown Restart All Partitions Menu Menu Selection Help Select the number of drives excluding spares you want in the array and press lt Enter gt The number drives presented in the selection list depends on the number of available drives in the system and the type of array chosen Note A RAID 10 array is created if more than 2 drives are chosen for a mirrored array Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 11 26 56 2000 Creating and M
97. d on the controller s native host port and the arrays for the failed over controller are presented on the other host port This is different from the stand alone dual port configuration where each array is presented on both host ports Theory of Operation After the controller has failed over the user can replace the failed controller with a new controller assuming the enclosure allows hot plugging The arrays will fail back to the new controller without intervention If you want to retry the failed controller it is necessary to release the kill line that the survivor asserts This can be done with the Administrator Utility Other Controller Menu Unkill Other menu option You can kill the other controller with the Kill Other menu option Ultra 160 Host SCSI Buses Controller A FAILED Ultra 160 Disk SCSI Buses A Host 0 Phys Chan 0 Disk 1 Offline Phys Chan 1 Offline A Host 1 Phys Chan 3 Offline Phys Chan 2 Offline Kill Unkill amp Presence Phys Chan 0 Phys Chan 1 Active Active B Host 1 Phys Chan 3 Active Phys Chan 2 Active B Host 0 Controller B FAILED OVER Figure C 4 JSS122 active active single port configuration with two host channels and two arrays controller A failed If you replace a failed controller with a new controller the new controller will attempt to retrieve its configuration called the mir
98. d set the bus speed to 80 MB sec Not all Note If you have drives that are not Ultral60 capable and you experience drives can handle the Ultral160 bus speed negotiation m SCSI ID assigned to each channel initiator ID The controller assigns each of its SCSI channels one of the SCSI IDs initiator IDs leaving 15 SCSI IDs available for devices You can change the SCSI ID assigned to each channel You may need to do this if the default ID 7 conflicts with a SEP ID You can set the ID to any number between 0 and 15 In Active Active mode you cannot change the initiator ID mw Domain validation You can enable or disable this function that checks for disk channel hardware and cable problems to ensure that you can run at Ultral60 speed Some drives do not support this function and return false problems You should disable the function in those situations In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller To configure the SCSI disk channels 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu screen displays 2 Select Channel Configuration and press Enter The Channel Configuration screen displays ysten Mena onfiguration Menu Set Da hannel Configuration Percent Host Cli Channel Priority Channe te SEP Con onf iguration Disk Configuration l Restore Defaults
99. dd Spare and press Enter The list of drives screen displays listing the available drives array you cannot use it as a spare until you clear the drive s metadata For i Note If a drive was a member of an array and was removed from the more information see Clearing Metadata from a Drive on page 8 3 4 Select the drive you want to add as a spare and press Enter The system confirms the change 5 Select Yes and press Enter 6 2 Managing Spares Deleting a Dedicated Spare You can delete a dedicated spare drive from an array at any time To delete a dedicated spare 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays 2 Select the array you want and press Enter The array menu displays 3 Select Delete Spare and press Enter 4 Select the spare drive you want to delete and press Enter The system confirms the deletion 5 Select Yes and press Enter to delete the spare The drive is now available for use in an array or as a spare Enabling Dynamic Spares The Dynamic Spares option lets you use all of your disk drives in redundant arrays without assigning one as a spare For example if you enable Dynamic Spares and a drive fails you can replace the drive and the controller will rescan the bus find the new disk drive and automatically start reconstruction of the array The controller automatically finds the new drive and reconstructs the array Wit
100. dications and the host interface An ideal enclosure should have at least one SEP for every disk channel available in the enclosure The controller communicates with the SEPs via the back end disk channels using a standard set of SCSI commands This communications path is managed by the controller and should be transparent to the user However when setting up a system care must be D 1 JSS122 JFS224 User s Guide taken to avoid SCSI ID conflicts Additionally some SEPs are narrow devices and can only see certain ranges of SCSI IDs such as 0 7 or 8 15 In those cases the controller s SCSI ID must be set within the range that the SEP can respond to To set the controller s SCSI ID on each disk channel from the main menu select the Configuration Menu option Then select the Channel Configuration option and choose the channel you wish to set up It will prompt you through several items including the Initiator SCSI ID Select the appropriate SCSI ID The controller will need to be rebooted before the new setting takes affect You may want to do all the channels at one time before rebooting the controller Host Communication Methods The host system can communicate to the SEPs through three different paths The first two paths are through the controller s host SCSI connection regardless of whether it is SCSI Parallel Interface SPI or SCSI over Fibre Channel and the third path is over a serial port The first method to communi
101. displays Array Menu Add an Array Delete an Arr Pool Spare Me Display Drive All Partition Drive Utilities Menu Blink Drive LED Clear Metadata Down Drive Test Unit Ready Display Drive Cache Menu Selection Help This option issues a command to the drive that you select to blink its LED The drive continues blinking its LED until you either 1 gt Press Escape before the MUI times out 2 gt Issue this command again which toggles the blink LED command off Board Temp 75 F lt 24 C A A MODE Controller A 3 Select Display Drive Cache and press Enter The Select Drives screen displays 4 Select a drive and press Enter The cache status screen displays showing the status of the read and write cache Array Menu Delete an Arrj H Blink Drive LED Pool Spare Mej H Clear Metadata Display Driv All Partitio RC ON WC ON ache Mon Nov 26 13 18 46 2600 tilities Menu Menu Add an Array H Blink Utilities Menu Menu Selection Help Display drive write back cache options drive to be queried then press lt Enter gt Use the arrow keys to select a Write back cache allows a drive to indicate that a write operation is complete once the data is in the drive s cache but before the data has been written to the disk drive media 75 F lt 24 C A A MODE Controller A Board Temp 5 Press Esc to return to the Drive Utilities Menu Mon Nov 26 13 19 29 2008
102. e 4 3 you can delete partition 3 and then expand partition 2 to use some or all of partition 3 s space Partition 1 Partition 2 Partition 3 Partition 4 Partition 5 Figure 4 3 Array after creating five partitions A Caution If you delete a partition you also delete all data stored in the partition Be sure that you back up all data before deleting a partition When you expand an array you add free space at the end of the array as shown in Figure 4 4 For more information about expanding an array see Expanding Array Capacity on page 4 20 Partition 1 Partition 2 Partition 3 Partition 4 Partition 5 Free space Figure 4 4 Array with five partitions after expanding the array After expanding an array you can either add a partition or expand the last partition to use the new free space You can also delete one or more partitions and expand a partition into the space Viewing Partition Status Information You can perform three functions related to partition status information m View partition status see page 4 27 m View partition statistics see page 4 29 m Reset partition statistics see page 4 31 Viewing Partition Status You can view the status of a partition including the following information m Array state Online Offline Critical or Fault tolerant m Array type RAID level 0 3 4 5 50 Volume or Mirrored The term mirrored is used for both RAID 1
103. e RS 232 Port ccccececscesssesseeseesseeeeeeeeeesseesseneeneenseeenes 2 3 Accessing the Disk Array Administrator Software Accessing the Disk Array Administrator Using the RS 232 Serial Port 3 1 Navigating the Disk Array Administrator Software 0 c cccececeeeeeeeteeneeneees 3 3 Changing the Screen Display c ccecceecesscesseeseeneceseceeeeeseecssensecneenseenaes 3 4 Disk Array Administrator Menu Tree o eeceeceeceeseeeeeeceeceeeeaeeaeeeeeeaeeaeenee 3 4 Creating and Managing Arrays and Partitions Creating Arrays ciizesisecatseetotacenents eandsaunsmianateruast AA 4 1 Creating a Single Partition Array ccccccceccsesseessecseceeeeeeeeeseecssenseenseenseeenes 4 2 Creating a Multiple Partition Array ccceeceeceeeceseeeeeeeeeeeeeeecaeceeeeeeeeeeeees 4 7 Matiasing Arrays anarian N 4 12 Viewing Array and Drive Status Information ccccccceeceeseeteeeeeeeees 4 12 Viewing Array Status aisiiarisdasgaatiargautivigaei shades ieagdas peagartieagacatiivarsinawaete 4 12 Viewing Drive Status osiinsa 4 14 Stopping the Array Initialization Process c ececeseesceseeeeneeeeeeeeeseeneenee 4 15 Addins a Partition gsi es siete cate hn See rege cea acca hal ocala acc seats aaa 4 15 Venfying an Array iron a a 4 17 Viewing Verification Status cccccecsccesssecenceceeeeeeeeeeeeneeeaeceeeeceeneeeeeeess 4 18 Stopping the Verification jsisseasanuedeaeen ni 4 19 Reconstructing an Array smutsen A
104. e receiver is connected Consult the dealer or an experienced radio television technician for help Use a shielded and properly grounded I O cable and power cable to ensure compliance of this unit to the specified limits of the rules ii This device complies with part 15 of the FCC rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Canadian Compliance Statement This Class A digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe A respecte toutes les exigences du R glement sur le mat rial brouilleur du Canada Contents Introduction Aut This Guide sarrerarako ne ees imnaetnaaateonmaouuelies 1 2 Convenios sespiscetpe seis sates ear eahca a aaks scceads tacdns canbe Pave des ee begets este treestacs 1 3 Reference Document caswicnsnaineacnwa ik eth mannii se teaies 1 3 External Documents srcem E a 1 3 Chaparral DOCUMECNIS senpecrneri iia 1 3 Hardware Installation Connecting the Controller oc ccccccccceecceecesseesseeeceseceeeeeseesseenseceseeneeeeaeeeseensees 2 1 Connecting to the SCSI Ports cccecceceescsesessecsseeeseeeeeeeeesseeceeeseeeeeneeenaes 2 2 Connecting to the Fibre Channel Ports ccccccccsseeesceeseeteeeeseeeeeeeeeeeeeees 2 2 Connecting to th
105. e type of array and how you are using it Any disk drives with write back cache enabled should be connected to an uninterruptable power supply UPS in case of power failure If the drives are not on a UPS and power is lost during disk writes the array will lose any data in the disk s write back cache drives delete their write back cache if they encounter an internal error Caution We recommend that you disable disk write back cache Some resulting in lost data Managing Disk Drives and Enclosures To change the write back cache setting 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays 2 Select Disk Configuration and press Enter The Disk Configuration screen displays Set Date Time Disk Configuration t Host Configur Write back cache y Channel Confij SMART SEP Configura Disk Configura i Option Configuration l Restore Defaults Menu Selection Help Select a global disk write back cache setting Enabling write back cache causes disk writes to complete before the data is written to the media This setting takes effect on a Rescan or controller reboot WARNING Enabling disk write back cache is NOT recommended unless your drive enclosure is equipped with an Uninterruptible Power Supply lt UPS gt Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 13 17 41 2000 3 Select Write back Cache and press Enter The Write back Cache scre
106. e warning range controller shuts down m CPU temperature 5 C to 90 C no event 0 C to 4 C and 91 C to 100 C warning events outside warning range controller shuts down Theory of Operation The JSS122 and JFS224 products have a number of different operating modes These modes set up a basic configuration that includes the number of host and disk channels available and either single or dual controllers To change to a new operating mode you must reboot the controllers For more information about setting the operating mode see Working with the Operating Modes on page 7 11 Operating Modes Overview The different operating modes let you configure the controller to support different types of host environments Stand Alone Single Port Use this mode with a single controller when only a single host interface is required One advantage of this mode is that three disk channels are available This mode is only supported by the JSS122 Stand Alone Dual Port Use this mode with a single controller when dual ported host access is required or two independent host ports are needed This mode is supported by the JSS122 and JFS224 Active Active Single Port Use this mode when running dual controllers and only a single host interface per controller is required In Active Active Single Port mode both controllers are active and processing host I O This mode is supported by the JSS122 and JFS224 Active Active Dual Port Use this mode when run
107. eating array with multiple 4 7 creating array with one 4 2 deleting 4 35 expanding capacity of 4 26 4 33 LUNs for 7 7 managing 4 26 resetting statistics 4 31 understanding 4 26 viewing statistics 4 29 viewing status of 4 27 pausing I O 7 27 POINT TO POINT topology setting 7 4 Poll Rate screen 8 13 polling interval changing for enclosures 8 12 Pool Spare Menu 6 5 6 6 pool spares adding 6 5 defined 6 1 deleting 6 6 displaying 6 6 priority changing for controller utilities 7 25 problems with device SCSI channel 9 5 host channels 9 2 host SCSI BIOS scan 9 4 9 5 terminal screen 9 1 the controller 9 6 R RAID levels compared A 4 described A 2 RAID reference information A 4 RAID Type screen 4 3 4 8 rebooting the controller 7 1 reconstructing arrays 4 19 6 1 replacing the controller 9 7 Rescan 7 27 rescanning channels 7 26 Reset on Failover 7 5 Reset Statistics 4 32 resetting aggregate statistics for all arrays 5 11 partition statistics 4 31 restarting the controller 7 1 the other controller 7 17 Restore Defaults screen 7 28 restoring default settings 7 28 resuming I O 7 28 RS 232 port connecting to 2 3 settings for 2 3 3 1 S SAF TE implementation D 1 sample rate changing 7 20 screen changing the display of 3 4 SCSI channels changing SCSI ID of 7 9 changing speed of 7 9 configuring 7 9 enabling channel 3 7 18 SCSI IDs changing for SCSI channels 7 9 SCSI port connecting to 2 2 Select
108. eck the progress of the array verification you can use the verification status described below or select Array Menu from the System Menu The status of the verification displays in the list of 4 18 arrays Viewing Verification Status You can view the status of the verification process while it is running To view verification status 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays 2 Select the array you want and press Enter The array menu displays 3 Select Verify Function and press Enter The verify menu displays Creating and Managing Arrays and Partitions 4 Select View Verify Status and press Enter The Verify Status screen displays 5 Press Esc to return to the verify menu Stopping the Verification You can stop the verification process Normally you want to let the verification finish although stopping it does not cause any damage to your data You may want to stop the verification if you want to improve performance of the controller for another application To stop the verification process 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays 2 Select the array you want and press Enter The array menu displays 3 Select Verify Function and press Enter The verify menu displays 4 Select Abort Verify and press Enter The system confirms that you want to stop the v
109. ected sample rate Note that IOPS and Bandwidth statistics are provided as general use information and are NOT intended for benchmarking purposes Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 14 43 07 2000 3 Select View Statistics and press Enter The View Statistics screen displays IOs per second Bandwidth lt MB s gt 6 Number of reads 34 885 921 Number of writes 35 126 529 Sectors read 372 256 671 Sectors written 492 411 562 Total queue depth a Menu Selection Help View the overall statistics for all storage LUNs in the controller This display provides general information about how the host systems accesses the controller These are updated at the user selected sample rate Note that IOPS and Bandwidth statistics are provided as general use information and are NOT intended for benchmarking purposes Board Temp 75 F 24 C A A MODE Controller A Mon Nov 26 12 29 55 2000 4 Press Esc to return to the Overall Statistics screen To access the read write histogram 1 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays 2 Select Overall Statistics and press Enter The Overall Statistics screen displays 5 10 Monitoring System Status 3 Select View R W Histogram and press Enter The View R W Histogram screen displays iew R W Histogram reads 1 sector reads 2 3 sector reads 4 7 sector reads 8 15 sect reads 16 31 se
110. eed Speed is a status type in the FC Status Menu that shows the speed 1 063 Mbps of the FC adapter Storage area network SAN SAN refers to the network behind servers that links one or more servers to one or more storage systems Each storage system could be RAID tape backup tape library CD ROM library or JBOD SANs operate with both SCSI and networking IP protocols Servers and workstations use the FC network for shared access to the same storage device or system Legacy SCSI systems are interfaced using an FC to SCSI bridge Target A target is a device peripheral that responds to an operation requested by an initiator host system Although peripherals are generally targets a peripheral may be required to act temporarily as an initiator for some commands for example SCSI EXTENDED COPY command Terminator block termination A terminator block or termination refers to the electrical connection at each end of a SCSI bus The terminator block is composed of a set of resistors or possibly other components The function of a terminator block is to provide a pull up for open collector drivers on the bus and also impedance matching to prevent signal reflections at the ends of the cable SCSI buses require that a terminator be placed on the 68 pin high density SCSI connector on the last SCSI peripheral Data errors may occur in a SCSI bus that is not terminated Topology A network topology refers to the physical layout of node
111. een 3 Press T to see the previous event You can continue to view earlier events by pressing T 4 Press Esc to return to the Event Log Menu 5 3 JSS122 JFS224 User s Guide 5 4 Viewing a Whole Screen of Events You can also view events from the log file a whole screen at a time This lets you quickly review all recent events The events display in chronological order that is the most recent event is last When you view a whole screen of events some parameters may be truncated If an event displays several parameters you can see all of them when you view the log one event at a time To view a whole screen of events 1 From anywhere in the Disk Array Administrator software press CTRL E The first screen of events from the event log displays Third column shows event type blank is an information event a W is a warning event an E is an error event 17 05 66 CONFIG CHANGED Reason Code 4 17 06 47 E CRITICAL ERROR NMI 17 08 29 CRITICAL ERROR GP Fault 17 08 54 POWER UP 17 09 05 KILLED OTHER Boot Timeout 17 09 05 CACHE INIT DONE Cache clean Controller A 17 09 05 FAILOVER Initiated Failover Set B 17 69 65 CACHE INIT DONE Cache clean Controller B 17 09 06 FAILOVER Completed Failover Set B 17 09 06 CONFIG CHANGED Reason Code 45 SeqNum 1 17 09 21 CONFIG CHANGED Reason Code SeqNun 2 17 09 47 BATT CHARGE CPLT 17 13 26 CRITICAL ERROR OSMEnterDebugger 66131C27 Calleri G 000000 Ca 15 53 47 POWER UP 15
112. een 7 21 Array Status 4 13 array types defined A 2 Index maximum number of drives 4 1 minimum number of drives 4 1 arrays adding 4 1 adding a partition to 4 15 bringing back online 4 24 changing names of 4 22 changing ownership of 4 23 creating 4 1 creating a multiple partition 4 7 creating a single partition 4 2 deleting 4 25 expanding capacity of 4 20 managing 4 12 mixing disks A 5 reconstructing 4 19 6 1 resetting aggregate statistics 5 11 status of expanding 4 22 status of verifying 4 18 stopping the initialization process 4 15 stopping the verify process 4 19 trusting 4 24 verifying 4 17 viewing aggregate statistics for all 5 9 viewing read write histogram 5 9 viewing status of 4 12 viewing status of drives in 4 14 8 2 Auto Detection topology setting 7 4 B B controller defined 7 11 Backoff percentage 9 3 battery changing age of 7 23 configuring 7 22 disabling 7 22 disabling life monitor 7 23 enabling 7 22 Battery Life Monitor Menu 7 24 Battery screen 7 23 Blink Drive LED 8 8 1 1 JSS122 JFS224 User s Guide blinking LED of disk drive 8 8 Bus Paused screen 7 28 Bus Speed screen 7 10 C cache disabling for disk drives 8 4 enabling for disk drives 8 4 locking setting on controller 7 21 Cache Lock screen 7 22 capacity expanding for arrays 4 20 expanding for partitions 4 26 4 33 capturing the event log file 5 4 Change Array Name 4 22 Change LUN 4 35 changing array
113. eesenecneenseenees 5 4 Capturing the Event ioe ssteieeisninas we hcnic inline AE 5 4 Displaying Hardware and Configuration Information 0 ccecceeseeeeteeeeeneees 5 5 Displaying Overall Statistics sis ccaisecinarioacaiende manaiicumunncninieaered ion 5 9 Resetting Overall Statistics 0 ccecceecceceseseseeeeeceseeseceeeseeseeeceeceaeeaeeaeess 5 11 6 Managing Spares Managing Dedicated Spares x idscpidedinimarainid nnen OA 6 2 Adding a Dedicated Spare ccccccsccccsssecessesseerssescssseseteceseseceseeesanssnnesassees 6 2 Deleting a Dedicated Spare tsi recurgcienia ack 6 3 Enabling Dynamic Spares sicisistasientiuinniaw ead n 6 3 Managing the Spare POO ssztissasessavexsiensieies ssezdeassens visscsieinenctinincteesnereabaaceoivans 6 4 Adding a Spare to the Spare Pool o ccceceseesceceeseeeeeeeceeceaeeaeeaeeeeeeaeeaeenee 6 5 Deleting a Spare from the Spare Pool ccccccceseeeseesceeseeteeessenteceteenseennes 6 6 Displaying the Spare Pool seninim a 6 6 7 Configuring the Controller Rebooting the Controller seroren A 7 1 Changing the Date and Time oo ecceceecceccceseesseeeceeceteesseeeseeeaeceseseseeeseenseensees 7 2 Configuring the Host Channels scscsinssecsccnestevssrndisessccannecencaccontdenerecareien 7 4 Configuring the Internal Host Port Hubs oo ececeeceeseeeeeeeeeeeeceseeaeeneees 7 6 Contents Understanding LUNs and Viewing LUN Information 00 0 0 ccceceececeeseeseeneees 7 7 Viewing LUN Info
114. em Menu Array Menu Add an Array Delete an Array Pool Spare Menu Display Drives Configuration Menu Utilities Menu rrayi Parti Partition Status Partition Statistics All Partitions Menuj Expand Partition Change LUN Change Partition Name Delete this Partition Menu Selection Help Display current status information for the selected partition This includes information about the parent array as well as for the partition Board Temp 79 F 26 C gt FAILED OVER Cntlr A Mon Sep 17 15 31 53 2061 Creating and Managing Arrays and Partitions 2 Select Partition Status and press Enter The status screen displays showing the status of the partition you selected rrayi Parti Array state FAULT TOL Array type MIRRORED Array drives 2 Name Homer Serial number ca 4e23c 73b61 Target ID LUN 1 4 Partition size 2 643MB Percentage of total array 160 Write back caching Enabled Menu Selection Help Display current status information for the selected partition This includes information about the parent array as well as for the partition Board Temp 77 F lt 25 C FAILED OVER Cntlr A Mon Sep 17 15 31 46 2061 3 Press Esc to return to the partition menu Viewing Partition Statistics You can view the current partition statistics The following statistics are available Read Total number of host read requests directed to the partition Write Total n
115. em date or time Board Temp 72 F 22 C gt FAILED OVER Cntlr A Tue Sep 18 15 34 09 2061 2 Select Backoff Percent and press Enter The Backoff Percent screen displays 3 Enter the backoff percent you want to use and press Enter Enter the percentage as three digits using the following format 00 0 The default is 01 0 Host SCSI Channel Problems Problem The host SCSI BIOS scan displays Device name not available The controller is properly connected but no arrays have been created Use the Disk Array Administrator to create an array and reboot the host system Problem The host SCSI BIOS scan hangs Check that termination is set correctly in the Configuration Menu and the drive enclosure Check that the device ID set in the Disk Array Administrator does not conflict with any other devices on the host SCSI channel If you have a long SCSI cable try a different or shorter cable Problem Only one array is displayed during host SCSI BIOS scan Check to ensure that LUN support is enabled Most SCSI host adapters such as the AHA 2940U2W ship with LUN support disabled by default Use Display Array Status to check the LUN assignment for each array If LUN 0 is not assigned to an array or some other LUN numbers are skipped use the Change LUN Assignment option for each array until you have LUN numbers starting at 0 with no LUNs skipped You must reboot the host system to recognize the new LUN assignment Tro
116. en displays The current setting is marked with an next to it ystem Menu rite back cache gt yu Set Date T DON T MODIFY i Host Confij ENABLE Channel Co DISABLE SEP Config Disk Config ing Option Configuration l Restore Defaults Menu Selection Help Select a global disk write back cache setting Enabling write back cache causes disk writes to complete before the data is written to the media This setting takes effect on a Rescan or controller reboot WARNING Enabling disk write back cache is NOT recommended unless your drive enclosure is equipped with an Uninterruptible Power Supply lt UPS gt Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 13 18 63 2000 4 Select the option you want and press Enter 5 Reboot or rescan to have your changes take effect See Rebooting the Controller on page 7 1 or Rescanning All Channels on page 7 26 8 5 JSS122 JFS224 User s Guide Displaying Disk Cache Status You can display the cache status of each disk drive Any disk drives with write back cache enabled should be connected to a UPS in case of power failure If the drives are not on a UPS and power is lost during disk writes the array will lose any data in the disk s write back cache To display disk cache status 1 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays 2 Select Drive Utilities Menu and press Enter The Drive Utilities Menu
117. er Each host will see all arrays mapped on their respective port This allows the two hosts to share all arrays providing a low cost configuration for two way clustering The enclosure in this example is not required to contain internal port bypass devices Enclosure Host PC Controller Expansion Channels Single Port Loop 1 Ext Port 1 Disk E FC HBA IF Host 0 Chan 0 Disk Chan 1 Host PC Disk Chan 2 Single Port Loop 2 Ext Port 2 Disk E FC HBA IF Host 1 Chan 3 Figure C 21 JFS224 in stand alone dual port dual host configuration Active Active Single Port Connectivity Options JFS224 The JFS224 can be configured as an active active controller pair with dual host ports In the active active configuration all arrays are not represented mapped to the Fibre Channel ports on both controllers Arrays are owned by a specific controller and they are only mapped to that controller s active ports When failover occurs the arrays from the failed controller map to the previously passive port on the surviving controller In the figures that follow the shaded host port blocks represent passive ports on the controllers in an active active single port configuration In the following configuration a single host with a dual port Fibre Channel interface connects directly to a JFS224 pair in active active single port con
118. er can kill the other controller by resetting it and taking it offline Logical unit number or logical unit LUN A LUN is a subdivision of a SCSI target For SCSI 3 each SCSI target supports up to 128 LUNs An FC host using LUNs can address multiple peripheral devices that may share a common controller Loop address Loop address is an FC term that indicates the unique ID of a node in FC loop topology A loop address is sometimes referred to as a Loop ID Glossary Low voltage differential LVD LVD is a method of powering SCSI cables that will be formalized in the SCSI 3 specifications LVD uses less power than the current differential drive HVD is less expensive and allows for higher speeds such as those of Ultra2 SCSI LVD requires 3 3 volts versus 5 volts for HVD Management information base MIB A MIB is a database of managed objects accessed by network management protocols An SNMP MIB is a set of parameters that an SNMP management station can query or set in the SNMP agent of a network device for example a router Mapping table A mapping table is a table indexed by sequential LUN values The values indicate select bus target LUN devices Mapping tables are used by some routers to perform FC to SCSI operations by default Other controller tIn Active Active mode the opposite controller from the one currently being used that is not the local controller is referred to as the other controller Ownership In an
119. erification process 5 Select Yes and press Enter Reconstructing an Array The controller automatically reconstructs redundant arrays RAID 3 RAID 4 RAID 5 RAID 50 and mirrored if an array becomes critical and a properly sized spare drive is available An array becomes critical when one or more member drives fail If a reconstruct does not start automatically it means that no valid spares are available To start a reconstruct replace the failed drive and add it as a dedicated spare see Adding a Dedicated Spare on page 6 2 and Enabling Dynamic Spares on page 6 3 or as a pool spare see Adding a Spare to the Spare Pool on page 6 5 Remember that any pool spares added might be used by any critical array not necessarily the array you want 4 19 JSS122 JFS224 User s Guide 4 20 Expanding Array Capacity You can expand array capacity without stopping I O activity so you can continue using the array while the expansion process runs You can only expand one array at a time A Note Expanding an array here does not change the size of the host operating system partitions that reside on the array because our controller is working at the block level not the file system level of the operating system To use the new space you must create a new partition using the newly added space or use a third party application specific to the operating system to change the partition size How you create a new partition or resize an existi
120. eristics of the media and interface including drivers transceivers connectors and cables A GBIC attaches to an FC adapter and connects a router to an FC host High voltage differential HVD HVD is a differential SCSI scheme with terminators that run on 5 volts Host bus adapter HBA An HBA is the critical link between a host server or workstation and a storage subsystem integrating computing platforms operating systems and I O protocols to ensure proper interoperability and functionality The bus adapter provides direct storage connectivity from the system to data within the storage subsystem and enables stable high speed transmission of information and files HBAs manage the controller specific aspects of handling a storage driver interface device implemented as a target driver which supports mass storage peripheral devices such as disks and tapes A storage driver interface is used to implement SCSI and other storage device drivers An HBA connects to the storage subsystem to the host computer and uses either fiber or copper media Initiator An initiator is an FC or SCSI device that contains application clients that originate service requests and task management functions for processing by a target FC or SCSI device Initiator mode Initiator mode is the configuration mode of a device in which an FC or SCSI initiator requests operations to be performed by an FC or SCSI target device Kill In Active Active mode one controll
121. ers are configured correctly and not overlapping Host Fibre Channel Problems Problem The LK LED FC host port is not lit The problem may be incorrect settings for the FC host port Verify the type of connection you have and change the topology accordingly For hub use Loop and for fabric or switch use Point to Point topology Problem The LK LED FC host port goes on and off repeatedly when connecting to a fabric switch F port The problem may be that the FC port topology is set to Loop and the fabric switch requires Point to Point Problem The LK LED FC host port is lit and the host sees the arrays but the performance is very slow It is possible to have a link but have a bad FC cable Try replacing the cable or GBIC The FC host port and switch or HBA do not establish a link The problem may be that both are set to Auto Disconnect the FC cable and try changing the FC host port topology to Loop or Point to Point according to your host and reconnect the cable Array Problems Problem Array is much smaller than it should be The backoff percent may be set higher than 1 which is causing the array to be much smaller than the full size of its member disks 9 2 Troubleshooting amp Note We strongly recommend that you leave the backoff percent at 1 The setting the backoff percent backs off or reduces the capacity of the array by the given percentage The backoff percentage helps when you assign spares b
122. es disk drive devices and applications only general guidelines are included in this document No in depth discussion of integration of the controllers is included here due to the high level of expertise required on the part of the integrator and the level of support that may be needed from Chaparral For more information about connectivity options see Host System Connectivity Options on page C 14 Connecting the Controller Your controller is already installed in an enclosure Before you configure the controller and create arrays you must connect the controller which has two types of data connections m SCSI JSS122 permitting connection to a server host through a SCSI host adapter mg Fibre Channel JFS224 permitting connection to other FC devices typically through an arbitrated loop or SAN with fabric m RS 232 serial port for configuration and management of the controller 2 1 JSS122 JFS224 User s Guide 2 2 Connecting to the SCSI Ports You can connect the controller JSS122 to SCSI ports Refer to your enclosure documentation for the type of connector required To connect to the SCSI ports 1 2 3 4 6 Be sure the enclosure is turned off Connect one end of the SCSI cable to the SCSI port on the enclosure Connect the other end of the SCSI cable to a server s SCSI port Ensure that the enclosure has proper termination for the SCSI host channel and all of the disk channels Ensure that all
123. eturn to the Drive Utilities Menu Managing SAF TE Enclosures A SAF TE Environmental Processor SEP is a SCSI device from which the RAID controller can inquire about the enclosure s environmental conditions such as temperature power supply and fan status and the presence or absence of disk drives The RAID controller can also tell the SEP about RAID activities such as drive rebuilds and failed disk drives If you have only one SAF TE enclosure the configuration settings are automatically enabled when the controller is installed in an enclosure that contains a SEP No changes are required to the default configuration settings to support SAF TE If you have more than one SAF TE enclosure you must set up the SEP LUNs as described in the next section You may want to enable the Global Flags option to allow the controller to set the SEP s global bits In most enclosures this allows the controller to set the enclosure s audible alarm when errors occur To enable this option see Changing the Additional SEP Settings on page 8 12 For additional SAF TE information see Appendix D SAF TE Implementation 8 9 JSS122 JFS224 User s Guide 8 10 You can control the following functions for SEP enclosures m Set the SEP LUN see page 8 10 m Change additional SEP settings see page 8 12 Polling interval Temperature sensor status Slot update status Enclosure update status Setting the SEP LUN If you have on
124. etween the two modes can be made via the Configuration Menu One advantage of running dual host port mode is to maximize bandwidth and host IOPs For sequential access patterns where disks can supply more than 160 MB sec of data to a host it could be advantageous to run in dual port mode Another advantage is that with an appropriate host driver the host has a redundant path to each array Theory of Operation In dual host port mode all arrays appear on both host ports at the same LUN positions If both ports are connected to the same host the host will see a given array twice unless it does special processing to detect duplicate paths to an array A host device driver may provide this functionality Hosts can detect redundant paths to an array by matching array serial numbers from SCSI inquiry data Single Port Stand Alone Controller Ultra 160 Disk SCSI Buses Ultra 160 Host SCSI Bus Physical Disk 1 Channel 1 Host Physical Channel 0 Physical Channel 2 Physical Channel 3 Figure C 1 JSS122 stand alone single port configuration Ultra 160 Dual Port Host SCSI Buses Stand Alone Controller Ultra 160 Disk SCSI Buses Host 0 Disk 1 Physical Channel 1 Physical Channel 0 Physical Channel 3 Physical Channel 2 Figure C 2 JSS122 stand alone dual port configuration Active Active Single Port Mode JSS122 In Active Act
125. ew WWNs C 13 JSS122 JFS224 User s Guide Host System Connectivity Options You can connect the controllers in a variety of ways to one or multiple host systems The following sections illustrate some of the basic host system connectivity configuration options supported with both stand alone and active active controllers The enclosure systems represented in the figures assume a generic configuration only SCSI termination and disk drives can be located internal or external to a specific enclosure Table C 5 describes how controller physical channels are used in the seven controller configurations for the JSS122 Table C 5 JSS122 controller physical channels Controller Mode Physical ChannelO Physical Physical Physical Channel 3 Channel 1 Channel 2 Stand Alone 1x2 Host 0 Disk Ch 1 Disk Ch 2 Disabled Stand Alone 1x3 Host 0 Disk Ch 1 Disk Ch 2 Disk Ch 3 Stand Alone 2x2 Host 0 Disk Ch 1 Disk Ch 2 Host 1 Active Active Single Host 0 controller A s Disk Ch 1 Disk Ch 2 Host 1 passive if other Port slot A 2x2 LUNs controller online active if failed over controller B s LUNs Active Active Single Host 1 passive if Disk Ch 1 Disk Ch 2 Host 0 controller B s Port slot B 2x2 other controller LUNs online active if failed over controller A s LUNs Active Passive Dual Host 0 active if not Disk Ch 1 Dish Ch 2 Host 1 active if not Port slot A 2x2 failed over failed over Active Passive Dual Host 1 passi
126. figur Operating Mode Channel Confij Cache Lock SEP Configura Battery Disk Configur Enable Trust Array Option Config Dynamic Spare Config Menu Selection Help Select the operating mode for this controller Active Active means that two controllers are active simultaneously and coordinate their activities as opposed to Stand Alone which means that only one controller is active in the system Dual Port means that a host can access the same LUN through two host channel interfaces i e there are two available paths from the host Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 14 44 36 2000 3 Select Cache Lock and press Enter The Cache Lock screen displays The current setting is marked with an next to it Disk Configur Array Option Config Dynamic Spare Config Set Date Time Cache arin Bourne Host Configur Channel Confi SEP Configura ing Menu Selection Help Enabling Cache Lock prevents the host from changing the controller s lt NOT the disk s gt write back cache setting Normally the controller s write back cache is enabled since this greatly improves write performance The controller s cache has battery backup assuming the battery is installed so leaving controller write back cache enabled is recommended Board Temp 77 F lt 25 C gt A A MODE Controller A Mon Nov 26 14 38 28 2000 4 Select the option you want and press Ente
127. figuration This represents a low cost high performance configuration The host will see arrays mapped uniquely to each port The enclosure in this example requires internal port bypass devices Enclosure Controller A Active Active Single Port FC Port 1 ra Ta Host 0 ypass Active Disk FC Port 2 Channels Host 1 Passive Dual Port Kill Unkill FC HBA l amp Presence FC Port 1 Host 1 Passive Disk Channels Ext Port FC Port 2 ic Hosto IF Bypass Active Controller B Active Active Single Port Figure C 22 JF S224 active active single port single host configuration C 21 JSS122 JFS224 User s Guide C 22 In the following configuration a single host with a dual port Fibre Channel interface connects to a Fibre Channel managed hub or switch which connects to a JFS224 pair in active active single port configuration The enclosure in this example does not require internal port bypass devices If switched fabric is used the host can access any array mapped in the active active pair on either of its ports If a managed hub is used the host array mapping will be similar to that shown in the previous figure Enclosure Controller A Active Active Single Port Ext FC Po
128. firmware upgrades 9600 19200 38400 and 57600 also work m Data Bits 8 m Stop Bits 1 m Parity None m Flow Control None or XON XOFF To connect to the RS 232 port 1 Be sure the enclosure power is turned off 2 Using a straight through serial cable connect one end of the cable to the serial port on the enclosure 3 Connect the other end of the serial cable to the serial port on the computer that will monitor and configure the controller 4 Turn the power on and begin configuration You have now completed the hardware installation steps You can now create and manage arrays 2 3 JSS122 JFS224 User s Guide 2 4 Accessing the Disk Array Administrator Software You can display and change a variety of settings using the Disk Array Administrator software Using the Disk Array Administrator you can Create and manage arrays see Chapter 4 Creating and Managing Arrays and Partitions Monitor system status see Chapter 5 Monitoring System Status Manage spares see Chapter 6 Managing Spares Configure the controller see Chapter 7 Configuring the Controller Manage disk drives and enclosures see Chapter 8 Managing Disk Drives and Enclosures You can access the Disk Array Administrator software using the RS 232 serial port connection on the controller You must connect a computer with terminal emulator software to the serial port according to Chapter 2 Hardware Installation Accessing the Disk Array Administr
129. g System Status Viewing One Event at a Time You can view controller related events one at a time The events display in reverse chronological order that is the most recent event is first If an event displays several parameters you can see all of them when you view the log one event at a time When you view a whole screen of events some parameters may be truncated To view one event at a time 1 From the System Menu select Event Log Menu and press Enter The Event Log Menu displays ystem Menu Array Menu Event Log Menu Menu Add an Array l View Event Log Delete an Arr Pool Spare Men r Menu Display Drives All Partitions Menu Shutdown Restart Menu Selection Help View Event Log Use this option to scroll through events one event at a time Note You can see a full screen of events at any time by typing CTRL E once or twice to display the Event Log Screen Board Temp 75 F 24 C A A MODE Controller A Mon Nov 26 14 45 31 2000 2 Select View Event Log and press Enter The event log screen displays the last event that occurred i Chaparral Disk Array Administrator Event date Evan ime Event type blank is an information event a W is a warning event an E is an error event Menu Selection Help CTRL Z or ESC exits Use up down arrows to scroll through events Note You can see a full screen of events at any time by typing CTRL E once or twice to display the Event Log Scr
130. g itself The SCSI address 7 has the highest priority followed by 6 5 4 3 2 1 and 0 SCSI bus A SCSI bus provides a means of transferring data between SCSI devices A SCSI bus is either an 8 or 16 bit bus that supports up to 8 or 16 devices including itself The bus can consist of any mix of initiators and targets with the requirement that at least one initiator and one target must be present SCSI device A SCSI device is a single unit on a SCSI bus that originates or services SCSI commands A SCSI device is identified by a unique SCSI address SCSI devices can act as initiators or targets SCSI port A SCSI port is an opening at the back of a router that provides connection between the SCSI adapter and SCSI bus G 3 JSS122 JFS224 User s Guide Simple Network Management Protocol SNMP SNMP is the Internet standard protocol defined in STD 15 RFC 1157 developed to manage nodes on an Internet Protocol IP network Small computer system interface SCSI SCSI is an industry standard for connecting peripheral devices and their controllers to an initiator Storage devices are daisy chained together and connected to a host adapter The host adapter provides a shared bus that attached peripherals use to pass data to and from the host system Examples of devices attached to the adapter include disk drives CD ROM discs optical disks and tape drives In theory any SCSI device can be plugged into any SCSI controller Sp
131. gged back in or automatically unkill the other controller To unkill the other controller 1 From the System Menu select Other Controller Menu and press Enter The Other Controller Menu is only available if the system is configured to run in Active Active mode The Other Controller Menu screen displays 2 Select Unkill Other and press Enter The system confirms that you want to make the change 3 Select Yes and press Enter to make the change The other controller boots 4 Press Esc to return to the Other Controller Menu screen 7 17 JSS122 JFS224 User s Guide 7 18 Disabling SCSI Channel 3 You can disable SCSI channel 3 from the Flash Utility Note Because disabling SCSI channel 3 may affect the configuration of amp nonvolatile memory SCSI channel 3 cannot be disabled if host data is present Shut down the controller gracefully to flush out host data or select Clear Battery Back Up from the Flash Utility menu which will clear the host data For a JSS122 disabling SCSI channel 3 results in only one available host channel meaning that the controller can only be run in Stand Alone Single Port mode The primary intent of this option for a JSS122 is to provide a SCSI channel configuration one host channel and two disk channels that is the same as that of the G5312 Note You should not disable SCSI channel 3 on a JSS122 if you are amp using Active Active mode The controller will not boot if you use t
132. guarantee good communication between the two controllers and you cannot change them Do not configure any other devices to IDs 6 and 7 on the disk channels or the active active configuration will fail to operate Caution When in Active Active Single Port mode the two controllers Ultra 160 Host SCSI Buses Controller A Active Active Ultra 160 Disk SCSI Buses A Host 0 Phys Chan 0 Disk 1 Active Phys Chan 1 Active A Host 1 Phys Chan 3 Phys Chan 2 Passive Active Kill Unkill amp Presence B Host 1 Phys Chan 0 Phys Chan 1 Passive Active Phys Chan 3 Active Phys Chan 2 Active Controller B Active Active Figure C 3 JSS122 active active single port configuration with two host channels and two arrays both controllers active Each controller also sends heartbeat messages to its partner controller If a controller does not receive a heartbeat message within a set timeout period it will kill the other controller assuming that it has malfunctioned After killing the other controller it will take ownership of the arrays and will activate its passive host port to assume the defunct controller s identity In this failed over configuration the controller will present its native identity on one host port and the failed over controller s identity on its other host port The arrays native to the controller are presente
133. h Dynamic Spares enabled if you have spares or available drives the controller first looks for a dedicated or spare pool drive for the reconstruction If none is found it uses an available drive which the controller automatically assigns as a spare and starts reconstruction You must make sure that the new or available drive has enough capacity to replace the smallest member in the array and does not contain metadata see Clearing Metadata from a Drive on page 8 3 In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller SEP will decrease if an array becomes critical with this option enabled and there are no available drives to start reconstruction To minimize the performance impact increase the controller rescan rate as described in the steps below Note Performance in systems without a SAF TE Enclosure Processor 6 3 JSS122 JFS224 User s Guide To enable dynamic spares 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays 2 Select Option Configuration and press Enter The Option Configuration screen displays 3 Select Dynamic Spare Configuration and press Enter The Dynamic Spare Config screen displays The current setting is marked with an next to it Channel SEP Conf Disk Conf ing Option Conf ig Dynamic Spare Config s Disabled Set Datejp
134. have existing devices at ID 1 the default in Active Active mode the controllers default to 0 and 1 or when you are adding more than one controller to a system You can set the target ID to any number between 0 and 15 FC Loop ID You may need to change the FC Loop ID if you want the controller to be at a specific address or if your system checks addresses in reverse order lowest address first You have two options m SOFT Use this setting if you do not care whether the controller s Loop ID changes when you power down and power up This setting lets the FC loop initialization process determine the Loop ID m Any number between 0 and 125 Select a specific number if you want the Loop ID to stay the same after you power down and power up The Disk Array Administrator software cannot tell you which Loop IDs are available To be sure that you have successfully assigned the Loop ID you want check the Loop ID after you reboot the controller If the controller cannot get the specified Loop ID during the loop initialization process it will try to get a soft address Controller LUN For more information about LUNs see Understanding LUNs and Viewing LUN Information on page 7 7 JSS122 and JFS224 All The controller has just one LUN that you can change when you configure the host channels You only need to assign a controller LUN if you are using the Configuration Application Program Interface CAPI to configure the cont
135. he Disk Array Administrator Using the RS 232 Serial Port on page 3 1 Troubleshooting Problem The controller reports a SDRAM memory error Check that the SDRAM DIMM is fully seated in the connector and the latches are fully engaged into the DIMM notches Check that the SDRAM is from the Chaparral approved vendor list Refer to the Chaparral technical support Web site for the latest updated information Problem The controller reports a battery error Verify that the correct NiMH battery pack part number 94 0003 001 is being used You will not damage the battery pack or the controller by using the wrong battery but the controller will not operate properly Check the battery pack cable for breaks Ensure that the battery connector is fully seated in the controller connector mate Replacing the Controller This section describes the general steps to install a new controller in your enclosure Refer to your enclosure documentation for specific installation instructions To install a new controller 1 Prepare the host system for the host connection using one or more SCSI host adapters JSS122 or FC host adapters JFS224 Open the enclosure to gain access to the internal connector where the controller will be installed Refer to the enclosure documentation Install the controller in the storage enclosure Refer to the enclosure documentation Add the proper DIMM and connect the battery pack cable to the board Refer to the e
136. her Information Delete an Arrj Kill Other Pool Spare Mej Unkill Other r Menu Display Drive Shutdown Other t All Partition Shutdown Both Menu Selection Help This menu displays information about the other controller If the other controller is up then the information is current If the other controller is down then this is the last known information about it If the other controller has never spoken to this controller since this controller was booted then most fields will be marked as Unknown or equivalent Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 14 43 45 2000 2 Select Other Information and press Enter The Other Information screen displays ther Informat ton State Act iveAct ive Failover reason NZA Firmware revision L426 Loader revision 6 812 Serial number 005013000926 Product ID JFS224 Controller ID Target ID Controller LUN A Act ive Act ive versio 19066 Node WN Port WN 2600686 n n Menu Selection Hel This menu displays information about the other controller If the other controller is Pi then the information is current If the other controller is down then this is the last known information about it If the other controller has never spoken to this controller since this controller was booted then most fields will be marked as Unknown or equivalent Board Temp 81 F 27 C Act Act DualPrt Cntlr A Fri Oct 26 11 58 37 2
137. his option in the Active Active mode You must change your operating mode before disabling SCSI channel 3 For a JFS224 the primary intent of disabling SCSI channel 3 in combination with disabling Fibre Channel loop 2 is to provide a configuration one host channel and three disk channels that is the same as that of the G7313 To enable SCSI channel 3 after disabling it repeat the steps below The Utility Menu item 8 will read Enable SCSI Channel 3 To disable SCSI channel 3 1 From the System Menu select Shutdown Restart and press Enter The system confirms that you want to shut down 2 Select Yes and press Enter The system confirms that it has shut down 3 Press Enter to reboot 4 While the controller reboots hold down the spacebar on your keyboard The Flash Utility screen displays Flash Utility Local Memory Test Passed Configuration FLASH LOADER v5 12 Oct 18 1999 16 46 31 gt MODEM Run diagnostics Run bridge Utility Menu Reboot Configuring the Controller 5 Press 6 for the Utility Menu The Utility Menu screen displays UTILITY MENU Clear Event Logs Clear Configuration Battery Life Monitor Options I 1 2 4 5 Clear Battery Back Up Cas if battery was removed B Disable SCSI Channel 3 J X Q T Disable Fibre Channel Loop 2 Ignore Mirrored Configuration Reboot Quit Utility Menu lt back to loader menu Show this Menu 6 Press 8 for Disable SCSI Chan
138. iguration Menu and press Enter The Configuration Menu displays Select Set Date Time and press Enter The Set Date Time screen displays Select Set Time and press Enter The Set Time screen displays Chaparral Disk Array Administrator Set Date Timep Set Date Time Host Configur et Time Channel Confij 12 35 aa SEP Configura Disk Configura ing Option Configuration l Restore Defaults Menu Selection Help Set current system time of day Board Temp 75 F 24 C A A MODE Controller A Mon Nov 26 12 35 62 2000 Enter the time you want and press Enter Enter the time using a 24 hour clock in the following format hh mm ss The system confirms that you want to make the change 7 3 JSS122 JFS224 User s Guide 5 Select Yes and press Enter to make the change The system confirms that the change is made 6 Press Esc to return to the Configuration Menu Configuring the Host Channels You can configure several settings for each host channel independently For information about configuring the internal host port hubs see Configuring the Internal Host Port Hubs on page 7 6 The settings that are available vary based on which model and mode you are using Table 7 1 lists the host channel when they are available settings and what they do Table 7 1 Host channel settings Host channel Models Modes available Description setting available Enable Disable JSS122 Stand Alone Single Yo
139. ions for the current array Select the partition you want and press Enter The partition menu displays From the All Partitions Menu 1 N From the System Menu select All Partitions Menu and press Enter The Select Partition or Free Area screen displays with a list of existing partitions and free space Select the partition you want and press Enter The partition menu displays 2 Select Delete This Partition and press Enter The system asks you to confirm the deletion 3 Select Yes and press Enter The Delete Partition option is also available from the Array Menu Monitoring System Status You should monitor your system regularly to ensure that the controller disks and arrays are working properly The Disk Array Administrator software lets you monitor the status several ways m Event log see page 5 2 m Hardware and configuration information screens see Displaying Hardware and Configuration Information on page 5 5 Array status screen see Viewing Array and Drive Status Information on page 4 12 Disk status screen see Viewing Drive Status on page 4 14 Power On Self Test POST see Problems During Bootup on page 9 5 Overall Statistics screen see Displaying Overall Statistics on page 5 9 5 1 JSS122 JFS224 User s Guide Displaying the Event Log 5 2 The controller s event log contains important information about the status of the controller disks and arrays You should check it regu
140. is point you will be unable to take down any additional drives in the array To take down a drive 1 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays Select Drive Utilities Menu and press Enter The Drive Utilities Menu displays Select Down Drive and press Enter The Select Drive screen displays showing drives that are array members Select the drive you want and press Enter The system confirms that you want to make the change Managing Disk Drives and Enclosures 5 Select Yes and press Enter to make the change To make the drive display again you must use Rescan See Rescanning All Channels on page 7 26 After you rescan you must clear the metadata from the drive before you can use it in an array or as a spare See Clearing Metadata from a Drive on page 8 3 Testing a Drive This function issues a Test Unit Ready TUR command to the selected disk This just tells you that the drive can respond but it still may not be functioning properly To test a drive 1 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays 2 Select Drive Utilities Menu and press Enter The Drive Utilities Menu displays 3 Select Test Unit Ready and press Enter The Select Drive screen displays 4 Select the drive you want and press Enter If the TUR was successful TUR STATUS OK displays If the TUR was not successful a failure message displays 5 Press Esc to r
141. ith an next to it ysten Menu onfiguration Menu Set Date Time larm Mute gt jkoff Percent Host Configur JNMUTE ity Priority Channel Confi MUTE m Mute SEP Configura on Configuration Disk Configura ore Defaults Menu Selection Help Mutes or unmutes the controller s on board alarm The setting selected remains in effect until it is changed again by using this menu selection Board Temp 79 F 26 C FAILED OVER Cntlr A Mon Sep 17 15 28 17 2061 3 Select the option you want and press Enter Locking the Cache Setting You can prevent host systems from using SCSI mode select commands to change the controller s write back cache setting Some operating systems disable write cache If cache lock is enabled the host cannot modify the cache setting The default setting is disabled This option is useful in some environments where the host system disables the controller s write back cache resulting in degraded performance In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller To lock the cache setting 7 21 JSS122 JFS224 User s Guide 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays 2 Select Option Configuration and press Enter The Option Configuration screen displays Set Date Time ption Configuration Host Con
142. ive Single Port mode two JSS122 controllers cooperate to provide redundancy If one controller fails the remaining controller will take over the failed controller s functionality To accomplish this each controller has two host SCSI ports one of which is normally active the other is normally passive In a failed over configuration the passive port becomes active and assumes the identity of the failed controller This failover process occurs without user intervention In Active Active Single Port mode arrays can be accessed only by the controller that currently owns them One controller will have no visibility to the other controller s arrays If a controller fails the surviving controller will take ownership of all arrays Pool spares and unassigned disks are visible to both controllers C 3 JSS122 JFS224 User s Guide C 4 The two controllers communicate via the back end disk buses Although many different message types are sent between the two controllers the majority of the data is write cache data In the default write back caching mode any data that the host writes to a controller is copied to the other controller before good status is returned to the host By mirroring the data if a controller fails the surviving controller will have a copy of all data that has not been written to the disk communicate with each other using SCSI initiator IDs 6 and 7 on the disk channels The values of 6 and 7 are mandatory defaults to
143. ive still contains metadata Clear the metadata from the spare UNUSABLE that must be cleared drive See Clearing Metadata from a Drive on page 8 3 SMART EVENT A disk drive informational Run diagnostics available from your exceptions page control IEPC operating system on the affected predictive failure message was drive Replace the drive if received No actions by the necessary controller are taken on the drive for these events UNWRITABLE The SDRAM cache has battery Either determine which drives are CACHE backed up data and the arrays missing and reinstall them or select assigned to this data are not present Yes when asked if you want to discard this data VOLT TEMP The analog to digital convertor Check that the controller s fan is WARN monitored a temperature and or running Check that the ambient voltage in the warning range temperature is not too warm See Appendix B Features and Specifications KILLED This controller is forcing a Either verify that the firmware OTHER shutdown killing the other versions are the same see controller in an active active Displaying Hardware and configuration Configuration Information on This is caused by incompatibility page 5 5 and Displaying between versions of firmware or Information about the Other disk or host channel ID conflicts Controller on page 7 15 or resolve the disk or host channel ID conflicts see Configuring the SCSI Disk Channels on page 7 9or Configuring the Host Chan
144. k level data Best cost performance for Write performance is slower striping with transaction oriented than RAID 0 or RAID 1 distributed parity networks very high performance and data protection supports multiple simultaneous reads and writes can also be optimized for large sequential requests RAID 50 6 CombinationofRAID Better random Lower storage capacity than 0 data striping and performance and data RAID 5 RAID 5 with protection than RAID 5 distributed parity supports more drives than RAID 5 RAID 10 4 CombinationofRAID Highest performance and High redundancy cost Also 0 data striping and data protection can overhead because all data is known as RAID 1 mirroring tolerate multiple drive duplicated twice the storage mirrored failures capacity is required requires minimum of four drives Volume 1 Non RAID non Ability to use a single Not protected lower Sets striped mapping to a drive to store additional performance not striped single drive similar data to JBOD Mixing Disks from Different Manufacturers or with Different Capacities An array can contain different models of SCSI disks even disks with different capacities for example an array can include a 4 GB disk and a 9 GB disk If you mix disks with different capacities the smallest disk determines the logical capacity of all other disks in the array regardless of RAID level For example if a RAID 0 array contains one 4 GB disk and four 9 GB disks the c
145. larly to monitor the status of your system For more information about specific warning and error events see Warning and Error Events on page 9 8 For information about specific SCSI disk and channel errors see Understanding SCSI Errors on page 9 11 Below is a list of some of the key warning and failure events included in the event log during operation Disk detected error Disk channel error Battery failure Drive down Power up Array critical Array offline Temperature warning Temperature failure this leads to a shutdown which is also logged Voltage warning Voltage failure this leads to a shutdown which is also logged The event log stores the most recent 400 events Events have a time stamp next to them with one second granularity the event log before calling technical support Event messages may let you resolve the problem without calling You should also check Chapter 9 Troubleshooting Note If you are having a problem with the controller or an array check You can view the event information three ways m Most recent event E One event at a time most recent event first m Full screen of events at a time You can also capture the event log to a file See Capturing the Event Log on page 5 4 Viewing the Most Recent Event The most recent voltage or temperature event displays in rotation with the date and time whenever the Disk Array Administrator times out and returns to its initial screen Monitorin
146. ler adds an array that controller is owner of the array as well as any dedicated spare drives Arrays and dedicated spares are not visible to the other controller when both controllers are online Delete Array A controller may only delete arrays that it owns Pool Spare Configuration Pool spares are visible to both controllers when both controllers are online Failover When a failover occurs the surviving controller will display FAILED OVER on the Disk Array Administrator in the area between the board temperature and date At this point the arrays and dedicated spares of the failed controller now belong to the surviving controller Resources from the failed controller are tagged with FO Failback When a failback occurs the controller coming online regains control of its arrays and dedicated spares from the other controller Changing the Operating Mode You can change the controller s operating mode In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller drivers must support dual port accesses If the host system does not support dual port access do not configure the controller in dual port mode because the operating system may believe that a single LUN is really two independent arrays resulting in possible data corruption Caution When using any dual port mode the host operating system and
147. ller A Wed Nov 29 15 18 18 2000 Use the T or J key to scroll through the drives These are the drives that are currently members of the array 4 Press Esc to return to the Array Menu 4 14 Creating and Managing Arrays and Partitions Stopping the Array Initialization Process If you find that you need to change the disks or some other array configuration you can stop the array initialization process After you stop the process the array is marked as offline and cannot be used You must delete the array before you can use the drives in another array To stop the array initialization process 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays 2 Select the array you want and press Enter The array menu displays 3 Select Abort Initialization and press Enter The system confirms that you want to stop the initialization process 4 Select Yes and press Enter Adding a Partition If you created a multiple partition array you must create at least one partition on the array before you can use the array You can create partitions on a multiple partition array until you use all of the free space For more information about partitions see Understanding Partitions on page 4 26 To add a partition 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays 2 Select the multiple partition
148. lso resets the statistics for this partition You may want to reset the statistics if you are monitoring performance or doing benchmark testing You may also want to reset statistics when you change how you are using the partition amp Note You cannot reset the queue depth value It always reflects the current I O queue depth 4 31 JSS122 JFS224 User s Guide 4 32 To reset partition statistics 1 Display the partition menu From the Array Menu 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays Select the array you want and press Enter The array menu displays Select Partition Menu and press Enter The Select Partition screen displays with a list of existing partitions for the current array Select the partition you want and press Enter The partition menu displays From the All Partitions Menu 1 From the System Menu select All Partitions Menu and press Enter The Select Partition or Free Area screen displays with a list of existing partitions and free space 2 Select the partition you want and press Enter The partition menu displays 2 Select Partition Statistics and press Enter The statistics menu displays 3 Select Reset Statistics and press Enter The system confirms that you want to make the change 4 Select Yes and press Enter The system confirms that the statistics have been cleared and
149. lve the problem Table 7 3 Alarm thresholds Alarm threshold What to do when the alarm sounds CPU temperature m Check the Disk Array Administrator software to Warning 0 C to 5 C and confirm what the alarm means See Chapter 3 65 C to 70 C Accessing the Disk Array Administrator Software Shutdown 0 C and 70 C m Check the ambient temperature and lower it if lt 0 C and gt 70 C needed Ambient temperature should be less than 45 C Onboard temperature m Same as above for the CPU temperature Warning 0 C to 5 C and 45 C to 50 C Shutdown 0 C and 50 C lt 0 C and 50 C 7 20 Configuring the Controller Table 7 3 Alarm thresholds Alarm threshold VCC voltage Warning SV 3 5 and 6 5 Shutdown S5V 6 5 and 10 What to do when the alarm sounds m Check the Disk Array Administrator software to confirm what the alarm means See Chapter 3 Accessing the Disk Array Administrator Software a If it is a warning alarm let the controller continue to operate a fit is a shutdown alarm turn off the power to the controller and send it for service 12V voltage m Warning 12V 8 and 8 Shutdown 12V 10 and 10 Same as above for the VCC voltage To enable or disable the alarm 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays 2 Select Alarm Mute and press Enter The Alarm Mute screen displays The current setting is marked w
150. ly as digits are entered Board Temp 77 F 25 C gt A A MODE Controller A Mon Nov 26 14 36 58 2000 5 Enter the size you want to make the partition and press Enter The Partition Name screen displays Chaparral Disk Array Administrator ystem Menu Array Menu Configuration Menu l Add Arrayl Array Status Change Array Name Drive Status Trust Array Abort Initialization Switch Array Owner Uerif yp Partition Name tition Menu Expand J a Partition Add Sp ete a Partition Delete Menu Selection Help Enter a name 16 characters or less recommended for the new partition This is a symbolic name used only as a label Names longer than 16 characters may be truncated in certain displays Board Temp 75 F 24 C A A MODE Controller A Mon Nov 26 14 32 09 2000 6 Enter a name for the partition and press Enter You can use up to 20 characters You can include any characters in the name including spaces If you do not want to name the partition you can just press Enter You can add or change the name later The LUN screen displays ystem Menu frray Menu Configuration Menu l rrayi Array Status Change Array Name Drive dd a Partition jrust Array LUN 1 itch Array Owner i rtition Menu d a Partition Delete a Partition Delete Spare Menu Selection Help Select the LUN to be associated with the new partition The first number in the selection list is the recommended
151. ly one SAF TE enclosure the configuration settings are automatically enabled when the controller is installed in an enclosure that contains a SEP If you have more than one SAF TE enclosure you must set up the SEP LUNs as described in this section SEP LUNs allow in band access to the SEPs under the controller s target ID using direct SAF TE commands You can set a SEP LUN to any value between 0 and 63 except where it would conflict with a previously assigned LUN SEP array or controller You can also set it to NONE which tells the controller not to present a LUN for this SEP under the controller s target ID You can set LUNs for SEPs that you plan to add by assigning a LUN to the SEP ID you want to use The controller assigns SEP IDs sequentially each time it starts always allows communication with all of the SEPs connected to the Note SEP LUN settings have no effect on the CAPI interface which controller You may want to change the SEP LUN if it conflicts with the LUN of another device To change the SEP LUN 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays Managing Disk Drives and Enclosures 2 Select SEP Configuration and press Enter The SEP Configuration screen displays Set Date Time EP Configuration t Host Configur SEP Settings y Channel Confij SEP LUNs SEP Configura Disk Configura i Option Configuration l Restore Defaults Menu
152. mmary of the current controller status is displayed Press lt Enter gt to display the main system menu Board Temp 73 F lt 23 C A A MODE Controller A Mon Nov 20 11 13 51 2000 Accessing the Disk Array Administrator Software 3 Press Enter The System Menu displays ystem Menu Array Menu Configuration Menu Add an Array Utilities Menu Delete an Array Event Log Menu Pool Spare Menu Other Controller Menu Display Drives Shutdown Restart All Partitions Menu Menu Selection Help System Menu Select an array or perform a system wide task Menu options are enabled depending on the current system and array configuration SPECIAL KEYS Arrow Keys or Hot Key Select menu item CTRL A ANSI UT1 toggle CTRL E Next screen CIRL R Refresh terminal CTRL B Color toggle CTRL H Help toggle CTRL Z Esc Quit menu Board Temp 75 F lt 24 C gt A A MODE Controller A Mon Nov 26 14 51 69 2000 You can now perform all of the functions described in the following chapters All steps start from the System Menu If an alarm condition has occurred you will see a message about the problem This message will also be stored in the event log Navigating the Disk Array Administrator Software You can navigate the Disk Array Administrator software using your keyboard Table 3 1 describes the primary navigation and selection methods Table 3 1 Disk Array Administrator navigation To Do this Select
153. mory test When this failure occurs it means the internal CPU memory failed Replace the controller to correct the problem Problem System hangs at Loading Bridge during BFLU Loader Menu Reflash the firmware to ensure you are using the latest version See Upgrading Firmware on page 7 29 If you cannot update the firmware or if the updated firmware does not correct the problem replace the controller Problem One of the POST diagnostic tests failed Contact Chaparral technical support 9 5 JSS122 JFS224 User s Guide Problem The system hangs at CT srv starting Follow these steps to resolve the problem 1 Check the disk and host channels to make sure they are properly terminated 2 Verify that there are no SCSI address conflicts 3 Check the enclosure to make sure everything is properly connected 4 Ifthe enclosure and the drive work properly replace the controller Problem The system hangs during a drive scan Follow these steps to resolve the problem 1 Check the enclosure to make sure everything is properly connected 2 Remove and replace the drive that failed the scan 3 Ifthe enclosure and the drive work properly replace the controller Problem An active active controller pair hangs during bootup drive scan typically after displaying CT_Init on the RS 232 display Verify that all SCSI channels are connected cabled and terminated properly Verify that the controllers are set to their default configuration Active
154. names 4 22 array ownership 4 23 controller Loop ID 7 5 controller target ID 7 5 operating modes 7 12 partition LUNs 4 35 partition names 4 34 SEP polling interval 8 12 SEP slot update status setting 8 12 SEP temperature status setting 8 12 SEP update status setting for the enclosure 8 12 the controller LUN 7 5 the sample rate 7 20 utility priority on controller 7 25 Channel Configuration screen 7 9 channels changing SCSI ID 7 9 changing SCSI speed 7 9 configuring for SCSI 7 9 configuring host 7 4 disabling host 7 4 enabling channel 3 7 18 enabling host 7 4 problems with host 9 2 rescanning 7 26 selecting the link speed 7 4 selecting the topology 7 4 Chaparral technical support 9 1 Chunk Size screen 4 6 4 10 Clear Metadata 8 4 communications parameters 3 2 Config Internal Hubs 7 7 configuration examples Active Active Single Port mode C 4 Stand Alone Dual Port mode C 3 C 6 Stand Alone Single Port mode C 3 configuration information defined 5 5 Configuration Information screen 5 8 configuration information displaying 5 5 configuration software accessing 3 1 configuration options for C 14 configuring host channels 7 4 SCSI channels 7 9 the battery 7 22 the controller 7 1 Connect I Hubs on FO 7 7 connecting to the FC port 2 2 to the RS 232 port 2 3 to the SCSI port 2 2 connectivity options Active Active mode C 18 C 21 Stand Alone mode C 16 C 20 controller changing FC Loop ID for 7 5 changing LUN 7 5 changing target
155. nce is slightly lower In RAID 10 arrays both read performance and write performance are better than those of a single disk A mirrored array is also highly reliable because both disks in a pair must fail for the array to fail In an array with five pairs of mirrored disks for example the array can maintain its integrity even if five disks fail as long as each pair is left with one good disk The main disadvantage of a mirrored array is its cost Because all disks must have a twin you must use twice the number of disks that actually contribute to the array capacity In an eight disk array for example you have only four disks of usable capacity RAID 3 RAID 3 arrays contain redundant information in the form of parity data which is calculated block by block for all user data The user data is distributed across all but one of the disks in the array The parity data is written exclusively to the parity disk also known as the check disk In the event of a disk failure the data can be reconstructed from corresponding data stripes on the remaining disks in the array RAID 3 provides excellent I O performance for applications that require high data transfer rates such as image processing video processing scientific data collection batch data processing or sequential reads and writes Array Basics RAID 3 is not well suited for transaction processing or other applications that require simultaneous reads and writes RAID 4 RAID 4 i
156. nclosure documentation Close the storage enclosure Connect an appropriate RS 232 cable between the configuration port on the storage enclosure and the terminal or host system used to configure the controller Refer to the enclosure documentation to locate the configuration port Ensure that your enclosure has proper termination for all of the disk channels Ensure that all SCSI devices on each of the SCSI buses all disk channels have a unique SCSI ID Turn on the power to the enclosure JSS122 JFS224 User s Guide Replacing a Down Controller When in Active Active Mode If one controller detects that the other has a problem it will kill it and output an appropriate event If it is determined that the controller has a permanent failure then it must be replaced Replace the bad controller and load the replacement controller with the same firmware level as the surviving controller After the firmware load completes the new controller will complete its boot and go online Warning and Error Events 9 8 There are a number of conditions that trigger warning or error events activate the alarm and may affect the state of the STATUS and FAULT LEDs The alarm or buzzer sounds mainly when the Disk Array Administrator displays a warning or error event The alarm will silence when you acknowledged the event by pressing Esc The events in these categories are listed below Warnings Warning events let you know that something related
157. nds commands to the SEP to update the overall status of the enclosure The default setting is OFF which means that the controller does not update the enclosure s Global Flags In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller To change the SEP settings 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays Select SEP Configuration and press Enter The SEP Configuration screen displays Managing Disk Drives and Enclosures 3 Select SEP Settings and press Enter The Poll Rate screen displays aacen Menu onfiguration Menu Set Date Timep SEP acs pal Host Conf EP Settings Channel C Poll Rate e SEP Confi Disk Confi Option Configuration l Restore Dersiltss Menu Selection Help Specifies the interval in seconds that the controller polls the enclosure s SEPs for status changes Board Temp 73 F 23 C gt A A MODE Controller A Mon Nov 26 13 22 19 2000 4 Enter the poll rate you want in seconds and press Enter The Temperature screen displays The current setting is marked with an next to it Channel cage SEP Configur Disk Configur Option Configuration l Restore Darailts Menu Selection Help Temperature Allows the controller s onboard temperature sensor to provide temperature information to the
158. ne Offline Critical or Fault tolerant Serial number Unique number the controller assigns to each array Name Name you give to the array RAID level Array type 0 3 4 5 50 Volume or Mirrored The term mirrored is used for both RAID 1 and RAID 10 arrays Number of drives Number of drives in the array when fault tolerant For example if a three drive RAID 5 array loses one drive the number will still display 3 Number of drives per subarray For RAID 50 only number of drives in each underlying RAID 5 array Number of spare drives Number of spare drives dedicated to this array Size Size of the entire array expressed in MB or GB for arrays larger than 10 GB Chunk size Array s chunk size Date created Date the array was created Utility Utility running None Verify Reconstruct Expand or Initialize Creating and Managing Arrays and Partitions E Number of partitions Number of partitions created on the array E Free partition total Amount of free space no partition on the array To view the status of an array 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays Chaparral rysten Menim elect Array Arrayl NumPart 1 Free MB RO Array2 NumPart 1 Free MB ll All Partitions Menu l I Menu Selection Help Use the up and down arrow keys to select an array from the list Board Temp
159. nel 3 The system confirms that SCSI channel 3 is disabled 7 Press q to return to the main menu 8 Press 5 to start the controller Disabling the Fibre Channel Loop 2 JFS224 Only You can disable the Fibre Channel loop 2 from the Flash Utility This results in only one available host channel meaning that the controller can only be run in Stand Alone Single Port mode The primary intent of this option in combination with disabling SCSI channel 3 is to provide a configuration one host channel and three disk channels that is the same as that of the G7313 To enable Fibre Channel loop 2 after disabling it repeat the steps below The Utility Menu item 9 will read Enable Fibre Channel loop 2 To disable Fibre Channel loop 2 1 From the System Menu select Shutdown Restart and press Enter The system confirms that you want to shut down 2 Select Yes and press Enter The system confirms that it has shut down 3 Press Enter to reboot 4 While the controller reboots hold down the spacebar on your keyboard The Flash Utility screen displays 5 Press 6 for the Utility Menu The Utility Menu screen displays 6 Press 9 for Disable Channel Loop 2 The system confirms that Fibre Channel loop 2 is disabled 7 Press q to return to the main menu 8 Press 5 to start the controller 7 19 JSS122 JFS224 User s Guide Changing the Sample Rate You can set how often the controller samples data when updating status screens disk and
160. nels on page 7 4 WWN HAS This controller was replaced in the Verify the WWN information for CHANGED past and assumed the WWN node this controller on all hosts that and port of the original controller However both controllers have rebooted and this controller is now using a WWN based on its own serial number This transition takes place on a dual controller reboot because it is not advisable to assume another controller WWNs indefinitely in case that controller is repaired and plugged back into the same fabric and because host operations have already been disrupted by the dual reboot access it JSS122 JFS224 User s Guide Table 9 1 Warning events Continued Event NON NATIVE WWN Definition This replacement controller has assumed the WWN node and port of the original controller This is done to make the replacement of a controller in an active active configuration transparent to the host However if both controllers lose power or are otherwise rebooted the original controller s WWN will be lost and the current controller will generate a new WWN based on its own serial number This means that a dual controller reboot will cause the controller s WWN to change from the host s perspective Recommended Action Verify the WWN information for this controller on all hosts that access it Errors Error events let you know that something related to the enclosure controller or disk d
161. nfiguration on page C 12 from the surviving controller This means that the replacement controller will boot up with the same configuration as the controller it replaced If the surviving controller for some reason does not contain a valid mirrored configuration you must manually configure the replacement controller The correct host target ID must be set and the Active Active Single Port or Dual Port operating mode must be enabled Note that when in the Active Active modes disk channel SCSI initiator IDs are forced to their defaults IDs 6 and 7 to guarantee that the two controllers can communicate with one another The active active controller system makes some assumptions about the host operating system s SCSI processing Specifically the host must retry incomplete commands after a timeout period Modern operating systems including Microsoft Windows NT do this This retry is necessary because a host may issue a command to a controller the controller fails over and the new controller does not have a copy of the command Only write command data in write back cache mode is mirrored on the other controller just before sending a good status to the host C 9 JSS122 JFS224 User s Guide Active Passive Mode The JSS122 and JFS224 support Active Passive mode In this mode one controller enables both its host ports and presents all LUNs on both ports The other controller keeps both its host ports passive and does not service any LUNs B
162. ng one depends upon the operating system Most operating systems cannot resize an existing partition Refer to your operating system documentation The number of drives you can add to an array depends upon the RAID level as shown in Table 4 2 You also cannot exceed the maximum number of drives for each RAID level See Creating Arrays on page 4 1 Table 4 2 Drive additions by RAID level RAID level Number of drives you can add Maximum number of drives RAID 0 1 to 4 at a time up to the maximum 16 RAID 1 Cannot expand N A Mirrored Volume Set Cannot expand N A RAID 10 2 or 4 at a time up to the maximum 16 RAID 3 4 0r 5 1 to 4 at a time up to the maximum 16 RAID 50 You can expand the array one RAID 5 arrayat 32 a time up to the maximum number of drives All RAID 5 arrays must contain the same number of drives If you are expanding a multiple partition array you add free space at the end of the array For more information about partitions see Understanding Partitions on page 4 26 A Note Once you start expanding array capacity you cannot stop it The expand function may take an hour or more to complete depending on the array type array size drive speed and other processes running on the controller Creating and Managing Arrays and Partitions To expand an array 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays
163. ning dual controllers and dual ported host access is required Both controllers are active in this mode and processing T O This mode is only supported by the JFS224 Active Passive Use this mode when running dual controllers and dual port host access is required but maximum performance is not required Only one controller is active in this mode the other is a hot standby This mode is supported by the JSS122 and JFS224 JSS122 JFS224 User s Guide Table C 1 and Table C 2 list the number of controllers and channels for each operating mode Table C 1 JSS122 Operating Modes Number of Active Number of Disk Number of Host Channels Channels per Operating Mode Controllers per Controller Controller Stand Alone Single Port 1 1 3 Stand Alone Dual Port 1 2 2 Active Active Single Port 2 1 2 Active Passive 2 2 2 Table C 2 JFS224 Operating Modes Number of Active Number of Disk Number of Host Channels Channels per Operating Mode Controllers per Controller Controller Stand Alone Dual Port 1 2 4 Active Active Single Port 2 1 4 Active Active Dual Port 2 2 4 Active Passive 2 2 4 Stand Alone Mode Single Port or Dual Port JSS122 C 2 In Stand Alone mode the JSS122 operates autonomously The controller can operate with single or dual host ports In single host port operation there are three disk channels dual host port mode takes one of the disk channels for host connection The selection b
164. not active Cntrlr LUN SOFT NONE or specific number as set in the Disk Array Administrator software CHAN 0 Initiator ID SCSI ID of controller on each CHAN 1 channel s set in the Disk CHAN 2 Array Administrator software CHAN 3 Bus Speed 160 80 or 40 MB sec as set in Disk Array Administrator software Domain Enabled or Disabled as set in Validation Disk Array Administrator software CONTROLLER Operating Operating mode as set in the Mode Disk Array Administrator software A A Status Current status of the controller Active Passive or Failed Over A A Version Version of the active active software Backoff Percentage set in Disk Array Utility Pri HIGH MED or LOW Administrator software 1 is utility priority as set in the default and recommended Disk Array value Administrator software Alarm Mute ON or OFF as set in Disk Battery ENABLED or Array Administrator DISABLED as set in software Disk Array Administrator software Cache Lock ON or OFF as set in Disk Dyn Spare ON or OFF as set in Disk Array Administrator Array Administrator software software DISK WBCache ENABLED DISABLED or DON T MODIFY as set in Disk Array Administrator software SMART ENABLED DISABLED or DON T MODIFY as set in Disk Array Administrator software ENCLOS Features Internal hubs Enabled or JFS224 Disabled as set in Disk Array only Administrator software Monitoring System Status Table 5 1 Configuration information Continued
165. not boot due to some problem The controller that boots uses its local configuration m Active Active mode and one controller is up when a new replacement controller boots New controller attempts to get its mirrored configuration from the other controller If it is not available it will try to use its local configuration If that is not available it will use the defaults Note When you select Clear Configuration in the Flash Utility Menu amp both the local Flash configuration and the other controller s mirrored configuration image are cleared Also there is an option J in the Flash Utility Menu that can be used to tell a booting controller to temporarily ignore the mirrored configuration This can be used if for whatever reason the mirrored configuration should not be used by a booting controller This is primarily a safeguard because a retrieved mirrored configuration is checked extensively before it is used World Wide Name Impersonation JFS224 C 12 This feature allows a replacement controller to assume the World Wide Name of the controller it replaced This continues indefinitely until a dual controller boot is done in which case the native that is controller serial number derived WWNs are used A warning event is posted indicating whenever a non native WWN is used If both controllers were up before a dual boot and the native WWN is different from what was previously in use a different warning event is
166. nterconnect various N_Ports or NL Ports Depending on vendor support fabric switches may be interconnected to support up to 16 million N_ Ports on a single network Failback In Active Active mode failback is the act of returning ownership of controller resources from a surviving controller to a previously failed but now active controller The resources include disk arrays cache data and host ID information Failover In Active Active mode failover is the act of temporarily transferring ownership of controller resources from a failed controller to a surviving controller The resources include disk arrays cache data and host ID information FC adapter An FC adapter is a printed circuit assembly that translates data between the FC host processor s internal bus and FC link FC Arbitrated Loop FC AL FC AL is one of three FC topologies in which ports use arbitration to establish a point to point circuit Arbitrated loops allow multiple ports to be connected serially in a single loop Up to 126 NL _Ports and 1 FL_Port can be configured in a unidirectional loop Ports arbitrate for access to the loop based on their AL PA Ports with lower AL_PAs have higher priority than ports with higher AL_PAs FC device A device that uses FC communications is referred to as an FC device FC port An FC port is the opening at the back of a router that provides a fiber optic connection between the FC adapter and FC host FC protocol for SCSI F
167. ntroller fails the other controller assumes temporary ownership of its resources m Unkill When a surviving controller removes the reset from the other controller it unkills it The other controller will reboot and attempt to come online 7 11 JSS122 JFS224 User s Guide 7 12 To run two controllers in active active mode the following must be true You must have two controllers installed in a proper configuration See Active Active Single Port Connectivity Options JF S224 on page C 21 and Active Active Single Port Connectivity Options JSS122 on page C 18 Both controllers must be loaded with compatible firmware levels The system automatically detects firmware incompatibilities and halts the boot of the second controller The operating mode of each controller must be set to Active Active See Changing the Operating Mode on page 7 12 Host channel 0 of each controller must be set to a different ID only if you are using a single host interface If you are using two host connections then each controller s host channel 0 can have the same ID Active Active Operation Scenarios You should understand how the controllers act in different active active scenarios Dual Boot When both controllers boot at the same time they exchange information related to their current configuration and the ownership of resources The time and date of the B controller is synchronized with that of the A controller Add Array When a control
168. of the SCSI devices on each of the SCSI buses host and disk channels have a unique SCSI ID Turn on the power to the enclosure Connecting to the Fibre Channel Ports You can connect the controller JFS224 to an FC HBA or an FC switch or hub You must use proper FC components Refer to your enclosure documentation for the type of connector required To connect to the Fibre Channel ports 1 2 3 Be sure the enclosure power is turned off Connect one end of the Fibre Channel cable to the FC port on the enclosure Connect the other end of the Fibre Channel cable to a server s HBA or an arbitrated loop hub or fabric switch Ensure that the enclosure has proper termination on all of the SCSI disk channels Ensure that all of the SCSI devices on each of the SCSI buses disk channels have a unique SCSI ID Turn on the power to the enclosure Hardware Installation Connecting to the RS 232 Port You use the RS 232 port to update the firmware configure and monitor the controller using a VT 100 ANSI computer with a terminal emulator Refer to your enclosure documentation for information about the correct type of cable to use Use a 9 pin straight through cable A null modem cable does not work 9 Pin Female 9 Pin Female D SUB D SUB 2 2 3 3 5 5 Configure the RS 232 port in your terminal emulator software using the following settings m Baud rate 115200 is the controller s default and best for downloading
169. oller B s 2x4 LUNs active LUNs if failed over controller A s LUNs Active Passive Host 0 active Hostl active Disk Ch 0 Disk Ch 1 Disk Ch 2 Disk Ch 3 Dual Port slot A if not failed if not failed 2x4 over over Active Passive Host 1 Host 0 Disk Ch 0 Disk Ch 1 Disk Ch 2 Disk Ch 3 Dual Port slot B passive if other passive if other 2x4 controller controller online active if failed over online active if failed over C 15 JSS122 JFS224 User s Guide Stand Alone Connectivity Options JSS122 You can configure the JSS122 as a stand alone controller with a single host channel 1x3 or with dual host channels 2x2 In the following configuration a single host with one SCSI port connects directly to the JSS122 controller The JSS122 is set up in a stand alone single port configuration Enclosure Host PC SCSI HBA Figure C 12 JSS122 stand alone single port 1x3 single host single cable configuration In the following configuration a single host with two SCSI ports is connected directly to the JSS122 controller The JSS122 is set up in a stand alone dual port configuration Enclosure Host PC Dual Port SCSI HBA Figure C 13 JSS122 stand alone dual port single host dual cable configuration In the following two way host cluster configuration one SCSI port from each host is connected directly to the JSS122 controller The JSS122 is set up in a stand al
170. on the controller s native host port and the arrays for the failed over controller are presented on the second host port After the controller has failed over the user can replace the failed controller with a new controller The arrays will fail back to the new controller without intervention If you want to retry the failed controller it is necessary to release the kill line that the survivor asserts This can be done with the Administrator Utility Other Controller Menu Unkill Other menu option You can kill the other controller with the Kill Other menu option Theory of Operation Controller A FAILED Fibre Channel Dual Port Phys Chan 0 Chan 0 Offline Port AHost 0 FC Port 1 Phys Chan 1 gt ys Chan Bypass Offline Offline A Host 1 FC Port 2 Phys Chan 2 Offline Offline Phys Chan 3 Offline eo PS FS BS Phys Chan 0 Active Bioti FC Port 1 Phys Chan 1 Active A Active Port B Host 0 FC Port 2 Phys Chan 2 _ c s Bypass Active B Active Phys Chan 3 Active Controller B FAILED OVER Figure C 7 JFS224 active active dual port configuration with two host channels and four back end channels controller A failed If you replace a failed controller with a new controller the new controller will attempt to retrieve its configuration called the mirrored configuration see Understanding Mirrored Co
171. one dual port configuration As a stand alone controller the JSS122 represents all array LUNs to both host ports 0 and 1 Each host in the two way cluster can access all arrays from separate SCSI connections in a cost effective high performance system configuration C 16 Theory of Operation Enclosure Host PC SCSI HBA Host PC SCSI HBA Figure C 14 JSS122 stand alone dual port dual host dual cable configuration In the following two way host cluster configuration two SCSI ports from each host are connected directly to the JSS122 controller The JSS122 is set up in a stand alone dual port configuration Host PC Enclosure Dual Port SCSI HBA Host PC Dual Port SCSI HBA Figure C 15 JSS122 stand alone dual port dual host quad cable configuration C 17 JSS122 JFS224 User s Guide Active Active Single Port Connectivity Options JSS122 You can configure the JSS122 as an active active controller pair with dual host channels 2x2 In the figures below the shaded host blocks represent passive ports in an active active configuration In the following configuration a single host with one SCSI port connects directly to the JSS122 active active controller pair The connection of physical channel 0 to physical channel 3 in this example is accomplished using an external SCSI jumper cable Enclosure Host PC Controller A SCSI HBA
172. or controller 7 5 changing for partitions 4 35 changing for SEPs 8 10 for partitions 7 7 for SEPs 7 7 for the controller 7 7 understanding 7 7 viewing information 7 8 M managing arrays 4 12 partitions 4 26 menu tree 3 4 metadata clearing from disk drives 8 3 mirrored disks A 2 mixing disks on arrays A 5 modes changing 7 12 defined 7 12 overview of operating C 1 muting the controller alarm 7 20 N names changing for arrays 4 22 changing for partitions 4 34 navigating in the Disk Array Administrator software 3 3 New Battery Installed 7 24 New LUN screen 4 35 New Sample Rate screen 7 20 Number of Drives screen 4 4 4 9 1 5 JSS122 JFS224 User s Guide Number of Spares screen 4 5 4 10 O Operating Mode 7 14 Operating Mode screen 7 14 operating modes changing 7 12 defined 7 12 overview C 1 other controller changing array ownership to 4 23 displaying information about 7 15 killing 7 17 managing 7 14 restarting 7 17 shutting down 7 16 7 17 unkilling 7 17 Other Controller Menu 7 15 7 16 7 17 Other Controller Menu screen 7 15 7 16 7 17 Other Information 7 15 Other Information screen 7 15 other defined 7 11 Overall Statistics 5 10 5 11 Overall Statistics screen 5 10 5 11 ownership changing for arrays 4 23 defined 7 11 P parity disk A 2 Partition Name screen 4 16 Partition Statistics 4 30 4 32 Partition Status 4 29 partitions adding 4 15 changing LUNs for 4 35 changing names of 4 34 cr
173. oth controllers monitor each other s heart beats and the passive controller receives write data and parity logs from the active controller Controller A Active AHostO EG PonT Phys Chan 0 Active Active AHost1 FG Port 2 Phys Chan 1 Active Active Kill Unkill amp Presence B Host 0 FC Port 1 Phys Chan 0 Passive Passive B Host 1 FC Port 2 Phys Chan 1 Passive Passive Controller B Passive Figure C 8 JSS122 active passive dual port configuration with two host channels and two back end channels controller A active Controller A Active Phys Chan 0 A Host 0 Active a rm Hoa ee Phys Chan 1 Active Phys Chan 2 Active Port A Host 1 FC Port2 Bypass Active Phys Chan 3 Active Kill Unkill amp Presence Phys Chan 0 Passive BHost0 FC Port Passive Phys Chan 1 Passive Phys Chan 2 BHost1 FC Port2 Passive Passive Phys Chan 3 Passive Controller B Passive Figure C 9 JFS224 active passive dual port configuration with two host channels and four back end channels controller A active C 10 Theory of Operation If the active controller fails normal failover occurs to the passive controller which becomes active by enabling both its host ports If the passive controller fails the active con
174. page 8 3 Enable disable write back cache see page 8 4 Display disk cache status see page 8 6 Enable disable changes to SMART see page 8 7 Blink a drive LED see page 8 8 Take down a drive see page 8 8 Test a drive see page 8 9 m For SEP enclosures you can Change the SEP LUN see page 8 10 Change additional SEP settings see page 8 12 Managing Disk Drives The Disk Array Administrator software lets you control a variety of functions related to disk drives You should also refer to your disk drive or enclosure documentation for information about related functions Displaying Drive Information You can display two types of information about disk drives ws A list of all drives connected to the controller m The status of all drives in an array 8 1 JSS122 JFS224 User s Guide 8 2 Displaying All Drives You can display a list of all drives connected to the controller The information includes If any of the drives are members of an array the following information may also display Channel SCSI target ID Manufacturer Model number Drive firmware revision mg Utility running Expand Verify etc m Array number The array s sequential position in the controller s array list E Member number The drive s sequential position in the array Drives that are not members of any array are listed as Available Drives that contain leftover metadata from a previous array are listed as Leftover Thi
175. r Configuring the Battery You can configure two settings related to the battery m You can enable or disable the battery It is enabled by default see page 7 22 m You can set the battery age or disable the battery life monitor see page 7 23 Enabling and Disabling the Battery If you are not using a battery in your controller the controller will sound an alarm To eliminate the alarm you can disable the battery The default setting is battery enabled 7 22 Configuring the Controller with an uninterruptable power supply UPS so that you will not lose Note You should only disable the battery if you are running the controller power to the controller If you disable the battery the controller will not give any warnings nor will it disable the write back cache If you change this setting you must reboot the controller for the change to take effect To change the battery setting 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays 2 Select Option Configuration and press Enter The Option Configuration screen displays 3 Select Battery and press Enter The Battery screen displays The current setting is marked with an next to it Disk Configur Array Option Config Dynamic Spare Config Set Date Time Happs guration Host Configur kaz Channel Confi kaz SEP Configura ong Menu Selection Help Default battery enabled If disabled the controller
176. ration a dual host with a single port Fibre Channel interface connects to a Fibre Channel switch which connects to a JFS224 pair in active active single port configuration Each host can access any array mapped in the active active pair in the switched fabric This allows the two hosts to share all arrays that is two way clustering The enclosure in this example requires internal port bypass devices Enclosure Controller A Active Active Single Port Host PC Tew FC Port 1 ep Ext nie _ Host 0 Single Port IF ypass Active Disk gt IS FC HBA Channels FC Port 2 Host 1 lt Passive B 3 Kill Unkill Host PC O amp Presence u FC Port 1 Host 1 il Passive i Single Port Disk FC HBA FCP Channels Ext Port ort 2 e Host 0 IF Bypass Active Controller B Active Active Single Port Figure C 25 JF S224 in active active single port dual host with switch configuration In the following configuration a dual host with a dual port Fibre Channel interface connects directly to a JFS224 pair in active active single port configuration Each host can access any array mapped in the active active pair This allows the two hosts to share all arrays This configuration provides a high performance two way clustering solution because each host has dual port performance This
177. rature and or running Check that the ambient voltage in the failure range temperature is not too warm See Appendix B Features and Specifications SAME In an active active configuration Contact technical support to resolve CONTROLLER both controllers were found to this issue SERIAL have the same serial number NUMBERS Non unique serial numbers can cause system problems For example array ownership and WWNs are determined by serial number Both controllers need to have their serial numbers examined and at least one needs to be updated Using the Loader Diagnostics Menu If you have any diagnostic errors contact Chaparral technical support Using the Loader Utility Menu If you have any diagnostic errors contact Chaparral technical support Understanding SCSI Errors The event log includes errors reported by SEPs and disk drives on your system If you see these errors in the event log the information below may assist you For more information about viewing the event log see Displaying the Event Log on page 5 2 Disk Errors If a disk detects an error it reports the error which is recorded in the event log Figure 9 1 shows an example of a disk detected error Disk Channel SCSI ID Sense Key Sense Code Sense Code Qualifier DISK DETECTD ERR 2 05 3 11 6b Figure 9 1 Disk detected error example 9 11 JSS122 JFS224 User s Guide Using the information in Table 9 3 and Table 9 4 you
178. re found immediately but new drives take 3 minutes gt A manual rescan temporarily suspends all host I O processing until all drives are found and spun up Board Temp 73 F lt 23 C gt A A MODE Controller A Mon Nov 26 12 26 22 2000 2 Select LUN information and press Enter The LUN Information screen displays LUN Information DEVICE SAVED CURRENT Array 1 Part 1 1 4 Array 2 Part 1 2 Controller lt FO gt DISA Controller 1 8 76 Menu Selection Help This window shows all controller LUN settings The controller LUN is the CAPI LUN The SEP LUNs are shown as either a number or DISACabled gt The LUN status is shown in 2 columns SAVECd gt and CURRCent gt If SAVE and CURR values differ then the SAVE value will be applied at the next reboot Board Temp 66 F lt 19 C FAILED OVER Cntlr A Tue Sep 18 15 33 16 2061 3 Press Esc to return to the Utilities Menu 7 8 Configuring the Controller Configuring the SCSI Disk Channels You can change three channel configuration options for each SCSI disk channel m Bus speed This is the maximum speed the controller will attempt to negotiate In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller 160 MB sec Default setting DT clocking 80 MB sec ST clocking 40 MB sec ST clocking disk channel problems you shoul
179. ress Enter The array menu displays Select Change Array Name and press Enter The Enter New Name screen displays Creating and Managing Arrays and Partitions 4 Enter the name you want to use and press Enter You can use up to 20 characters You can include any characters in the name including spaces The system confirms that you want to make the change 5 Select Yes and press Enter Changing Array Ownership If you are using Active Active mode you can change the ownership of any array between the controllers For more information about Active Active mode and array ownership see Appendix C Theory of Operation You might want to change ownership if you plan to replace or repair one controller Changing ownership lets you continue using an array without interruption and makes the array visible on the controller you change it to You can no longer see the array on the original controller Note When you change the ownership of an array the LUNs assigned to the array s partitions become invalid After changing ownership you must assign a new LUN to each array partition To change array ownership 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays 2 Select the array you want and press Enter The array menu displays 3 Select Switch Array Owner and press Enter The system confirms that you want to make the change 4 Select Yes and press Enter 5
180. riped RAID 50 arrays contain redundant information in the form of parity data which is calculated block by block for all user data As in a RAID 5 array the parity information is distributed across the disks in the array and occupies the equivalent capacity of one disk per RAID 5 Data is interspersed with the parity information If one disk in the array fails the data on the failed disk can be reconstructed from the parity data and user data on the remaining disks Two disks in one RAID 5 subset must fail before the entire array fails The read performance of a RAID 50 array is excellent better than a RAID 5 array along with better data protection Write performance is lower than that of a RAID 0 array because write operations involve calculating and writing new parity data as well as writing the new user data JSS122 JFS224 User s Guide Volume Sets A volume set provides the ability to create a host accessible LUN that maps to a single disk in the array similar to JBOD Volume sets are nonredundant and have a capacity slightly less than the physical disk they are created from Volume sets are useful if you have a single disk available and you do not want to use it as a spare amp Note For more information on RAID levels see The RAIDbook A Source Book for RAID Technology published by the RAID Advisory Board St Peter Minnesota February 1996 Comparing RAID Levels Table A 1 illustrates the differences between
181. rives has failed and requires immediate attention Table 9 2 defines each error event and recommends the action you should take Table 9 2 Error events Event ARRAY CRITICAL Definition One drive in the specified array failed and the array is running in degraded mode not fault tolerant Recommended Action Replace the failed drive and add it as a spare to the critical array If you have dynamic spares enabled you only need to replace the drive The system will automatically reconstruct the array BATTERY FAILED A failure in the battery pack and or charging interface has been detected Replace the controller s battery DISK CHAN FAILED An error has occurred in communicating on the disk channel Check the cables on the channel Check the termination on the disk channel ENCLOSURE FAIL Enclosure specific general purpose I O triggered a failure condition Check the status of the enclosure Refer to the enclosure documentation SDRAM UNCORR ECC A noncorrectable multiple bit SDRAM ECC error occurred Reseat the memory Check that the memory installed is on the approved list http www chaparralnet com and click Support If the problem continues replace the memory 9 10 Troubleshooting Table 9 2 Error events Continued Event Definition Recommended Action VOLT TEMP The analog to digital convertor Check that the controller s fan is FAIL monitored a tempe
182. rmation oo ccccecceeseesseeseceeceneeeseeeseesaeeesecneeeeeeeeseensees 7 8 Configuring the SCSI Disk Channels o ececeeeeeeeeseeeeeseceeeeeeeeeeeeeeceaeeaeeneees 7 9 Working with the Operating Modes ccccecsesssessceeeceseeeceeseceseceteeseeeeseeaees 7 11 Understanding Active Active and Active Passive Configurations 7 11 Active Active Operation Scenarios ccccecscesseesteeeeeeeeeeseeeeecaeeeteenteeenes 7 12 Changing the Operating Mode o cceeceesseesseeteceseceseeeseeeseceaeeeeeeeeeeneesaees 7 12 Managing the Other Controller cccccceseessceeeceseeeececseceseeeneeeeeesseesaees 7 14 Displaying Information about the Other Controller ceeeeeeeeenneeeeeeee 7 15 Shutting Down the Other Controller savisrssssirirrssinervssridersinidci asasan niardesis 7 16 Shutting Down Both Controllers ccccccccscccceesseceeessececesseceessseeeeesseeeees 7 16 Killing the Other Controller savisssisczacsiatasas tsscncssnacies iaa 7 17 Unkilling the Other Controller cccccccccssccceesseeeeeseeceeseeeeeseseeeeeseeeeees 7 17 Disabling SCSI Channel 3 cccisiatesasivacsassaterstssancessaeina sinucsei acdenvinedaasandeesas 7 18 Disabling the Fibre Channel Loop 2 JFS224 Only ceeceeesseeteereees 7 19 Changing the Sample Rate sissnianoicscniuestinytessiotlasinnesiapeaasaadunnciknnasess 7 20 Changing the Alarm Mute Setting ccccccccesccesceeseeesecnseceseeeeeeeeseseeseesenes 7 20 Locking
183. roblem To verify an array 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays Select the array you want and press Enter The array menu displays 4 17 JSS122 JFS224 User s Guide 3 Select Verify Function and press Enter The verify menu displays i Chaparral Disk Array Administrator ystem Menu Rene Y Menu Configuration Menu l d Array Dele Array Status Change Array Name Pool Drive Status rray2 Disp Abort Initializa Start Verify All Verify Function View Verify Status Expand Function Abort Verify Add Spare Delete Spare Menu Selection Help Start Verify Board Temp 73 F lt 23 C gt A A MODE Controller A Mon Nov 26 11 47 26 2000 4 Select Start Verify and press Enter Verification begins and the percentage of verification completed displays You can continue to use the array during verification isk Array Administrator ystem Menu Le Menu Configuration Menu l A Array2 Dele Array Status Change Array Name Pool Drive Status Array2 Disp Abort Initializall Start Verify A11 Verify Verity ify Status Expand Verify 5x ify Add Sp A Delete Menu Selection Help Start Verify Board Temp 73 F lt 23 C A A MODE Controller A Mon Nov 26 11 48 15 2000 To return to the verification menu press Esc To ch
184. roller over a host channel using SCSI protocol extensions If you are not using CAPI you can set the controller LUN to NONE If you are using CAPI you can set it to a value of 0 63 You have two options for setting the LUN m NONE Use this setting if you are not using CAPI to configure the controller this change takes effect immediately unless the controller LUN is currently in use m Any number between 0 and 63 Select a specific number if you want the controller s LUN to stay the same when you reboot Reset on Failover JSS122 Active Active Turn this option on select Yes if you find that failover takes a long time This option tells the controller to reset the SCSI bus after a failover and speeds failover in some situations In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller 7 5 JSS122 JFS224 User s Guide To configure the host channels 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu screen displays 2 Select Host Configuration and press Enter If the controller is in Stand Alone Dual Port mode the Channel screen displays Select the channel you want to configure and press Enter The screens that display next depend upon the model and mode you are using An displays next to the current setting on each screen See Table 7
185. rored configuration see Understanding Mirrored Configuration on page C 12 from the surviving controller This means that the replacement controller will boot up with the same configuration as the controller it replaced If the surviving controller for some reason does not contain a valid mirrored configuration then the user must manually configure the replacement controller The correct host target ID must be set and the Active Active operating mode must be enabled Note that when in Active Active Single Port mode disk channel SCSI initiator IDs are forced to their defaults IDs 6 and 7 to guarantee that the two controllers can communicate with one another The active active controller system makes some assumptions about the host operating system s SCSI processing Specifically the host must retry incomplete commands after a timeout period Modern operating systems including Microsoft Windows NT do this This retry is necessary because a host may issue a command to a controller the controller fails over and the new controller does not have a copy of the command Only write command data in write back cache mode is mirrored on the other controller just before sending a good status to the host C 5 JSS122 JFS224 User s Guide Stand Alone Dual Port Mode JFS224 In Stand Alone Dual Port mode the JFS224 operates autonomously The controller normally operates with dual host ports although you can disable one or both ports You select
186. rray immediately after creating it while the array initialization process runs It uses the verify method to create the array which takes longer than the zero method The system confirms that you want to create the array Creating and Managing Arrays and Partitions 12 Select Yes and press Enter A message notifies you that the array is being created and shows the progress of the initialization process The array initialization process takes from several minutes to more than an hour depending on the array type volume RAID 0 and RAID 1 are the fastest array size drive speed and other processes running on the controller You can press Esc to return to the Disk Array Administrator menus and perform other functions To check the progress of the array initialization select Array Menu from the System Menu The status of the initialization displays in the list of arrays If you find that you need to change the disks or some other array configuration you can stop the array initialization process See Stopping the Array Initialization Process on page 4 15 Note Most operating systems such as Windows NT 4 0 require you to amp reboot the host system to see anew LUN Windows 2000 can recognize new LUNs by selecting Refresh from the Computer Management Window NetWare v3 12 and later can recognize new devices by typing the command SCAN FOR NEW DEVICES at the console prompt Other operating systems might have similar features Cre
187. rt 1 gt IF Host 0 r Active Disk Channels Host PC Ext FC Port 2 o e IF Host 1 a Passive lt gt Dual Port 2 Kill Unkill FC HBA g amp Presence g Ex FC Port 1 Si i Host 4 o Passive Disk W FC Port 2 Channels gt IF t Host 0 Active Controller B Active Active Single Port Figure C 23 JFS224 in active active single port single host with managed hub or switch configuration In the following configuration a dual host with a single port Fibre Channel interface connects directly to a JFS224 pair in active active single port configuration Each host will only see arrays mapped uniquely to its port Each host cannot access arrays mapped to the other port This provides a nonsharing dual host configuration The enclosure in this example requires internal port bypass devices Enclosure Host PC Controller A Active Active Single Port Single Port Bt Fort hosto a FO HBA o IF Bypass Foii Disk Channels FC Port 2 Host 1 Passive Kill Unkill amp Presence FC Port 1 Host PC Host 1 Passive Disk Channels Single Port Ext Port FC Port 2 FC HBA IF Bypass oao Controller B Active Active Single Port Figure C 24 JFS224 in active active single port dual host configuration Theory of Operation In the following configu
188. rt 1 Gbit and 2 Gbit speeds and four Ultral60 SCSI disk channels that you can configure in the following ways m 2x4 stand alone dual host port controller with four SCSI disk channels mM 2x4 active active or active passive dual host port controller with four shared SCSI disk channels the default configuration m 1x4 active active single host port controller four shared SCSI disk channels m 2x4 active passive dual host port controller with four SCSI disk channels For additional information about how the stand alone and active active configurations work see Appendix C Theory of Operation The controllers include the following product features m Superior performance in single and dual controller configurations Sequential data transfers from disk arrays at over 180 MB sec sustained with a single controller m Greater than 18 000 I O operations per second IOPS capability from a single controller m Active active failover with dual hot pluggable controllers 1 1 JSS122 JFS224 User s Guide Operating system independent no special software or drivers required Ultra160 low voltage differential single LVDS host ports dual ports JSS122 only 2 Gbit JFS224 only Fibre Channel host ports dual ports Fibre Channel Interface supporting Fibre Channel Arbitrated Loop FC AL point to point and switched fabric JFS224 only Ultral60 LVDS device channels up to three channels JSS122 or up to four channels JFS22
189. s Select Enable and press Enter The option is only enabled until you use it After you trust an array the option reverts back to being disabled Press Esc twice to return to the System Menu Select Array Menu and press Enter The Select Array screen displays with a list of existing arrays Select the array you want and press Enter The array menu displays Creating and Managing Arrays and Partitions 8 Select Trust Array and press Enter The system confirms that you want to trust the array 9 Select Yes and press Enter The array will be back online Note If the array does not come back online it may be that too many members are offline or the array may have additional failures on the bus or enclosure that Trust Array cannot fix Deleting an Array You can delete an array when you no longer need the array or you need the drives for another use A Caution Deleting an array deletes all partitions and data contained in the array Note You cannot delete an array while any utility Initialize Verify Expand or Reconstruct is running on the array You must stop the utility if allowed or let it finish before you can delete the array To delete an array 1 From the System Menu select Delete an Array and press Enter The Select Array screen displays rysten Meni Select Array Arrayt NumPart 1 Free MB R UP 17GB test Array2 NumPart i Free MB R UP 17GB account ll All
190. s display You select a drive by highlighting it and pressing Enter Each selected drive turns gray in the drive list After you press Enter for the number of drives you entered previously the system automatically begins the expansion To skip a drive use the T or J key Expansion begins and the percentage completed displays To return to the Array Menu press Esc To check the progress of the expansion you can use the expand status described below or select Array Menu from the System Menu The status of the expansion displays in the list of arrays Viewing Expand Status You can view the status of the expansion process while it is running To view expand status 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays Select the array you want and press Enter The array menu displays Select Expand Function and press Enter The expand menu displays Select View Expand Status and press Enter The Expand Status screen displays Press Esc to return to the expand menu Changing an Array Name You can change the name of an array This does not affect the target ID or LUN values of the array The controller does not allow you to change an array name when a utility is running To change an array name 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays Select the array you want and p
191. s left the Number of Spares screen displays 8 Ifthe Number of Spares screen displays enter the number of spares you want to add and press Enter This creates dedicated spares that can only be used by this array A dedicated spare drive will not be available for any other use For more information about spares see Chapter 6 Managing Spares If you do not want a spare enter 0 The Select Drives screen displays 4 5 JSS122 JFS224 User s Guide 9 10 11 If the Select Drives screen displays select the drive you want to use as a dedicated spare and press Enter Only available drives that is drives that are not members of an array and are not assigned as dedicated or pool spares display You can delete a dedicated spare from the array at any time For more information see Deleting a Dedicated Spare on page 6 3 You select a drive by highlighting it and pressing Enter Each selected drive turns gray in the drive list After you press Enter for the number of drives you entered previously the system automatically goes to the next screen To skip a drive use the T or J key If the array you are creating is a RAID 0 RAID 3 RAID 4 RAID 5 RAID 10 or RAID 50 the Chunk Size screen displays ystem Menu Array Menu dd an fArraysjration Menu Add an Array Chunk size s Menu Delete an Array 64KB g Menu Pool Spare Menu 32KB ntroller Menu Display Drives 16KB 7Restart All Partitions Menu Selection Help
192. s on a network Topologies range from local network topologies to WAN topologies FC topologies include point to point FC AL and fabric Trap lIn the context of SNMP a trap is an unsolicited message sent by an agent to a management station The purpose is to notify the management station of some unusual event Unkill In Active Active mode when a surviving controller removes the reset from the other controller it unkills it The other controller will reboot and attempt to come online A A Controller defined 7 11 Abort Initialization 4 15 Abort Verify 4 19 accessing the Disk Array Administrator software 3 1 Active Active Dual Port mode defined 7 13 B 2 C 6 Active Active mode A controller 7 11 B controller 7 11 connectivity options C 18 C 21 defined 7 13 B 2 killing the other controller 7 17 managing the other controller 7 14 restarting the other controller 7 17 shutting down both controllers 7 16 shutting down the other controller 7 16 7 17 unkilling the other controller 7 17 Active Active Single Port mode configuration examples C 4 defined C 3 C 6 Active Passive Dual Port mode defined 7 13 B 2 Active Passive mode defined C 10 Add a Partition 4 15 Add an Array 4 2 4 7 Add Pool Spare 6 5 Add Spare 6 2 adding arrays 4 1 dedicated spares 6 2 partitions 4 15 pool spares 6 5 alarm temperature thresholds for 7 20 turning on or off for the controller 7 20 voltage thresholds for 7 20 Alarm Mute 7 21 Alarm Mute scr
193. s similar to RAID 3 in that the redundant information is achieved in the form of parity data The user data is distributed across all but one of the disks The controller uses a single dedicated parity drive for data protection The main difference is that RAID 3 usually synchronizes writes to its disks while RAID 4 can send data to its disk independently RAID 4 is best suited for transaction processing applications that require high read requests but not write requests such as inquires rather than updates RAID 4 is not recommended for I O intensive applications that require high data transfer rates RAID 5 RAID 5 arrays contain redundant information in the form of parity data which is calculated block by block for all user data The parity information is distributed across the disks in the array and occupies the equivalent capacity of approximately one disk Data is interspersed with the parity information If one disk in the array fails the data on the failed disk can be reconstructed from the parity data and user data on the remaining disks Two disks must fail before the entire array fails The read performance of a RAID 5 array is excellent comparable to that of a RAID 0 array Write performance is lower than that of a RAID 0 array because write operations involve calculating and writing new parity data as well as writing the new user data RAID 50 RAID 50 arrays are made up of two or more RAID 5 arrays across which data is st
194. s situation can arise if drives are pulled and reinserted To clear leftover metadata use the Clear Metadata function See Clearing Metadata from a Drive on page 8 3 To display all drives 1 From the System Menu select Display Drives and press Enter The Display Drives screen displays 8683MB 8683MB 8683MB 8683MB 8683MB 8683MB 8683MB 8683MB a 6 1 1 2 2 3 3 SEAGATE SEAGATE SEAGATE SEAGATE SEAGATE SEAGATE SEAGATE SEAGATE Display Drives 1T39133LCU T39133LCU T39133LCU T39133LCU 1T39133LCU T39133LCU T39133LCU T39133LCU R 6061 Available R 6061 Available R 6001 Available R 6661 Available R 6061 Available R 6661 Available R 6661 Available R 6661 Available Menu Selection Help Contains information about each drive connected to the controller The information displayed is Channel SCSI ID Size Number and Status gt Manufacturer Model Number Firmware Revision Board Temp 75 F 24 C A A MODE Controller A Wed Nov 29 15 18 18 2606 2 Press Esc to return to the System Menu Viewing Drive Status You can view the status of the drives in an array including the following information Drive number The drive s sequential position in the controller s drive list Drive status Whether the drive is up or down Channel number Back end disk bus number Target ID Size Size of the drive in MB Managing Disk
195. schainsuad Meares iiazaa a a rari dat senalahcmecueianalamensmnesbiniaates 9 10 Using the Loader Diagnostics Menu cccccseesssessceeeceseeesseesecnsecnseeeseseneeaees 9 11 Using the Loader Utility Menu oo eececeecceccececeesseeseceeeceseesseeeaeceseeneeeeeeseeeaees 9 11 Understanding SCSI ETOS sessscnssaixenseonca inertia AOAN 9 11 DISK EtrOrs siisceicotciniss iteeutvinde ininaisbiniendadnnsd aa A E 9 11 Disk Channel Errors gasstnevanes cenncvennias cade E 9 13 Voltage and Temperature Errors and Warnings csccesseesseeeeeeteeeeees 9 14 Array Basics Array TYDES arei teovanaeunan talaga NENT A 2 RAID 0 Striped Disks oo cccccccesccessesseseseeseecsaeceeseeceeeecaeecaueeeceeeeneeeaes A 2 RAID 1 RAID 10 Mirrored Disks cccccccccccccccessceeseceessecessecesseeeeeees A 2 RAIDS siscanchniae eehinai ein cane eRe eR INL RAEN RR Ram A 2 RAID A iasan advice eau aes cee eug ieee A 3 RAIDS cictusioimnaieiaiiaininiaminionigienisiaindnanigueninamiaaiamebnimeiaiaie A 3 RAID SO coiros nsare e ieee ete eases ec ecree claret A 3 VOl Ume Sets zicccaryniel ataieresl asus aieraie ee en i aes A 4 Comparing RAID Levels csnainancinainncisieniiaisiuninninianenuiiauls A 4 Mixing Disks from Different Manufacturers or with Different Capacities A 5 Mixing Disks on Different RAID Controller Channels cccececceseeseeseees A 5 Contents B Features and Specifications Voltage and Temperature Monitoring ooo
196. se I O see page 7 27 Restore the default settings see page 7 28 Upgrade the firmware see page 7 29 Rebooting the Controller You may need to shut down and reboot the controller after making certain configuration changes If you are using a Stand Alone mode you may also need to reboot the controller when you move it or make hardware changes If you are in Active Active or Active Passive mode you should shut down both controllers when you move the controller or need to perform maintenance For more information see Shutting Down Both Controllers on page 7 16 We strongly recommend that you shut down the controller gracefully and do not just turn off the power A normal shutdown ensures that the write back cache has been flushed to the disk JSS122 JFS224 User s Guide To shut down and reboot the controller 1 From the System Menu select Shutdown Restart and press Enter The system confirms that you want to shut down Select Yes and press Enter The system confirms that it has shut down Press Enter to restart The system performs its self test When you see the Disk Array Administrator initial screen the controller is ready See Chapter 3 Accessing the Disk Array Administrator Software Changing the Date and Time 7 2 You can change the controller s date and time In a dual controller configuration Active Active or Active Passive mode changes to either controller s setting are immediately sent to the other
197. sent to the address listed above Technical Support If after reviewing this user s guide you still have questions about installing or using your Chaparral product please contact us at 303 845 3200 or by e mail at support chaparralnet com Federal Communications Commission Radio Frequency Interference Statement WARNING Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation However if this equipment does cause interference to radio or television equipment reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between equipment and receiver Connect the equipment to an outlet on a circuit different from that to which th
198. sescccsesessssseceeseessaseseceesenees D 2 Glossary Index vii JSS122 JFS224 User s Guide viii Introduction This User 5 Guide explains how to install and use the Chaparral JSS122 and JFS224 RAID controllers The Javelin family of RAID controllers is designed as external RAID controllers to be used with a host system and Small Computer System Interface SCSI disk drives to provide a powerful disk subsystem All three controllers are fault tolerant external RAID controllers supporting stand alone configurations and active active failover that let you configure SCSI disk drives as fault tolerant arrays The array partitions are presented as logical units to one or two host Ultral160 SCSI channels or Fibre Channel FC ports All three controllers also have write back cache memory that is backed up by a battery The Chaparral JSS122 has up to two Ultral60 SCSI host ports and up to three Ultral60 SCSI device channels that you can configure in the following ways m 1x3 stand alone single host port controller with three SCSI disk channels m 2x2 stand alone dual host port controller with two SCSI disk channels mM 2x2 active active dual host port controller with two shared SCSI disk channels the default configuration m 1x2 stand alone single host port controller with two SCSI disk channels for backward compatibility installation in legacy G5312 enclosure systems The JFS224 has two Fibre Channel FC ports that suppo
199. sk drive Domain validation should normally be enabled since it helps to guarantee good data transfers Only disable Domain Validation if you have drives that cannot support it or if you experience Domain Validation failures Board Temp 79 F 26 C FAILED OVER Cntlr A Mon Sep 17 15 28 55 2001 5 Select the option you want and press Enter If you are not in Active Active mode the Initiator ID screen displays showing the current initiator ID Set Date Time Backoff Percent Host Conf hannel 0 ty Priority Channel C Initiator ID 6 Mute SEP Confi Configuration Disk Confi e Defaults Menu Selection Help Select the controller s initiator ID for this backend channel For SCSI this is a SCSI ID For Fibre Channel this is the Fibre Channel loop ID Tue Sep 18 15 41 53 2061 Board Temp 77 F 25 C gt Stand Alone Dual Port 7 10 Configuring the Controller 6 Select the initiator ID you want and press Enter In Active Active mode you cannot change the initiator ID The system confirms that you want to make the changes 7 Select Yes and press Enter to make the changes 8 Press Esc to return to the Configuration Menu Working with the Operating Modes Your controller can operate in different modes depending on the model Stand Alone Single Port or Dual Port Active Active Single Port and Dual Port and Active Passive Dual Port In stand alone configuration the controller operates autonomo
200. small smaller than an individual member in an array the controller cannot use it 6 4 Managing Spares Adding a Spare to the Spare Pool You can add up to eight drives to the spare pool to reconstruct any critical array on the controller After an array has started using a pool spare other critical arrays are prevented from using it For a pool spare to be used it must be at least as large as the smallest drive in the array To add a pool spare 1 From the System Menu select Pool Spare Menu and press Enter The Pool Spare Menu displays Array Menu Pool Spare Menu Menu Add an Array Display Pool Spare Delete an fArr Add Pool Spare Pool Spare Mej Delete Pool Spare r Menu Display Drive All Partitions Menu Selection Help Display pool spare drives Board Temp 73 F lt 23 C A A MODE Controller A Mon Nov 26 12 33 66 2000 2 Select Add Pool Spare and press Enter The Select Drives screen displays Chaparral Disk Array Administrator dd Pool Spare SEAGATE 139133LCU 4461 Available Id 61 i Available Id Available d Available d Available d Available d 8761MB SEAGATE T39236LCU Available Select Drive lt s gt Ch Id 2 Menu Selection Help Add a drive to the spare drive pool Board Temp 73 F lt 23 C gt A A MODE Controller A Nov 26 12 33 28 2600 3 Select each spare drive you want to add and press Enter 6 5 JSS122 JFS224 User s Guide
201. spin up when amp the LED goes off before rescanning the channels This avoids unnecessary delays during the rescan that can cause the operating system to time out 7 26 Configuring the Controller To rescan all channels 1 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays k Array Administrator ystem Menu Array Menu tilities Menu Menu Add an Array Rescan Delete an Arr Hot Swap Pause Pool Spare Me Hardware Information r Menu Display Drive LUN Information t All Partition Drive Utilities Menu Overall Statistics Engineering Menu Menu Selection Help Tell the controller to probe all backend channels for new or removed drives Use this option when installing or removing drives If using an enclosure with a SEP the rescan will be done automatically removed drives are found immediately but new drives take 3 minutes gt A manual rescan temporarily suspends all host I O processing until all drives are found and spun up Board Temp 73 F lt 23 C A A MODE Controller A Mon Nov 26 12 26 22 2000 2 Select Rescan and press Enter Pausing I O Some drive enclosures allow you to remove and replace drives while SCSI bus activity continues others do not Refer to your enclosure documentation The Hot Swap Pause option suspends activity on all device channels used in the controller thereby ensuring data integrity on the connected drives and arrays
202. t accessible appear gray For example the Array Menu is not accessible unless one or more arrays exist Accessing the Disk Array Administrator Software Array Menu 1 7 Array Status Drive Status Verify Function Abort Initialization Start Verify Verify Function View Verify Status Expand Function Abort Verify Add Spare Delete Spare Change Array Name Trust Array Switch Array Owner Partition Menu Add a Partition Delete a Partition Expand Function Start Expand View Expand Status Add an Array Enter Array Name Single Partition Enter LUN Select RAID Type System Menu Array Menu Number of Drives Add an Array Select Drives Delete an Array Chunk Size Pool Spare Menu Number of Spares Display Drives All Partitions Menu Configuration Menu Pool Spare Menu Utilities Menu Event Log Menu Other Controller Menu Shutdown Restart Display Pool Spare Add Pool Spare Delete Pool Spare Partition Menu Partition Status Partition Statistics Expand Partition Change LUN Change Partition Name Delete This Partition Figure 3 1 Menu tree Partition Statistics View Statistics Reset Statistics 3 5 JSS122 JFS224 User s Guide System Menu Array Menu Add an Array Delete an Array Pool Spare Menu Display Drives All Partitions Menu Configuration Menu Utilities Menu Event Log Menu Other Controller Menu Shutdown Restart Set Date Time Host Configuration Channel Configuration SEP Configuration Disk Configuration
203. t Fibre Channel ports In Active Active Single Port mode one host port is normally active and the other is normally passive In a failed over configuration the passive port becomes active and assumes the identity of the failed controller This failover process occurs without user intervention In Active Active Dual Port mode each controller normally presents the LUNs it owns on both of its Fibre Channel ports giving the host dual ported access However when a controller fails the surviving controller presents its LUNs on one of its host ports and the LUNs of the failed controller on its other host port Theory of Operation Table C 3 and Table C 4 describe how the controllers present LUNs to the host Table C 3 Presentation of LUNs in Active Active Single Port Mode Controller A Controller A Controller B Controller B Controller Status Host Port 1 Host Port 2 Host Port 1 Host Port 2 Both controllers online Controller A LUNs Passive Controller B LUNs Passive Controller A failed Inactive Inactive Controller B LUNs Controller A LUNs Controller B fails Controller A LUNs Controller B LUNs Inactive Inactive Table C 4 Presentation of LUNs in Active Active Dual Port Mode Controller Status Controller A Controller A Controller B Controller B Host Port 1 Host Port 2 Host Port 1 Host Port 2 Both controllers online Controller A LUNs Controller A LUNs Controller B Controller B LUNs LUNs Controller A failed Inactive Inactive
204. t to run in dual port mode or your host operating system does not support it For more information about Stand Alone mode see Appendix C Theory of Operation Active Active Dual Port JFS224 This option allows both controllers to operate independently and as in an active active pair Active Active modes allow two controllers to cooperate in system operation in a fault tolerant manner If one controller fails while in Active Active mode the other controller assumes its activities allowing host access to continue For more information about Active Active mode see Appendix C Theory of Operation When both controllers are online each controller presents its LUNs on both ports permitting redundant host access to all LUNs when there is a failure between the host and controller After failover one port of the surviving controller presents controller A s LUNs and the other port presents controller B s LUNs When you change to this mode on one controller you must reboot both controllers at the same time After rebooting both controllers will automatically be in Active Active Dual Port mode Active Passive Dual Port JSS122 and JFS224 This option allows you to use just one controller with the second controller acting only as a backup in case of a failure of the controller in use When you change to this mode on one controller you must reboot both controllers at the same time After rebooting both controllers will
205. the Cache Setting isensnensrernn e 7 21 Configuring the Battery dacs aiatinaruaicatwiicasertaticna eons merase 7 22 Enabling and Disabling the Battery 0 0 0 0 cccccccceeccesceesceeteceeeeteeeeeeeneenees 7 22 Changing the Battery Age and Disabling the Battery Life Monitor 7 23 Changing the Utility Priority cccccccecssesseceseceeeeeseeeseesseceseeeeeeeeeessecsecneenes 7 25 Rescanning All Channels sciccciisccdeeipetanaictiaeve holier aderinnel A 7 26 Pauising I O cissamen A 7 27 Restoring Default Settings sissien R A 7 28 Upgrading Firmware sccscistecccseiectassdeecdensocadenisecscanasadnensseccnssadacanspavccanoecdesnseuacene 7 29 Upgrading the Controller s Firmware ccccccsccssseseceeccesseesseeseeeeeneeeeaes 7 29 Managing Disk Drives and Enclosures Managing Disk Drives ssasinsine Gentine aas enna E 8 1 Displaying Drive Information ccececeesceseeeeceeeeeeeeeeeeceeceaeeaeeaeeeeeeaeeaeenee 8 1 Displaying All Drives sranna n tere eres 8 2 Viewing Drive Status sarrera a Ran 8 2 Clearing Metadata from a Drive cceceeccecscesseesseeesceseeeeeeeseeesseneenseenseenees 8 3 Enabling and Disabling Write back Cache ccceccecceecesceseeneeeeeeeeeeneenee 8 4 Displaying Disk Cache Status ccccccceecceseesecsseeseeseeeceeceaeeaeeaeeeeeeaeeneenee 8 6 Enabling and Disabling SMART Changes o ccececceecceeceseeneenteeeeeeeaeenee 8 7 Blinking a Drive LED s cunicismdenwimacinamnainanmeineanine 8 8
206. the different RAID levels Table A 1 Comparing RAID levels Min No RAID of Level Drives Description Strengths Weaknesses RAID 0 2 Data striping without Highest performance No data protection one drive redundancy fails all data is lost RAID 1 2 Disk mirroring Very high High redundancy cost e Performance overhead because all data is Data protection duplicated twice the storage e Minimal penalty on capacity is required write performance RAID 2 N A No practical use Previously used for RAM No practical use same error environments performance can be achieved correction known as by RAID 3 at lower cost Hamming Code and in disk drives before the use of embedded error correction RAID 3 3 Block level data Excellent performance for Not well suited for transaction striping with large sequential data oriented network applications dedicated parity drive requests single parity drive does not support multiple concurrent write requests RAID 4 3 Block level data Data striping supports Write requests suffer from Not striping with multiple simultaneous same single parity drive widely dedicated parity drive read requests bottleneck as RAID 3 RAID 5 used offers equal data protection and better performance at same cost A 4 Array Basics Table A 1 Comparing RAID levels Continued Min No RAID of Level Drives Description Strengths Weaknesses RAID 5 3 Bloc
207. tion 4 36 deleting arrays 4 25 dedicated spares 6 3 partitions 4 35 pool spares 6 6 device SCSI channel problems 9 5 Disable Battery Life Monitor 7 25 Disable Channel Loop 2 7 19 Disable SCSI Channel 3 7 19 disabling domain validation 7 9 FC loop 2 7 19 host channels 7 4 SMART changes 8 7 the battery life monitor 7 23 write back cache changes 8 4 Disabling the Fibre Channel Loop 2 menu option 7 19 Disk Array Administrator accessing 3 1 changing the screen display 3 4 initial screen 3 2 menu tree 3 4 navigating in 3 3 System Menu 3 3 disk array See arrays Disk Configuration screen 8 5 disk drives blinking LED of 8 8 clearing metadata from 8 3 disabling SMART changes 8 7 disabling write back cache 8 4 displaying 8 2 enabling SMART changes 8 7 enabling write back cache 8 4 maximum by array type 4 1 minimum by array type 4 1 taking down 8 8 testing 8 9 using disks from different manufacturers A 5 using disks with different capacities A 5 viewing cache status 8 6 viewing status of 4 14 8 2 Display Drive Cache 8 6 Display Drives screen 8 2 Display Pool Spares 6 6 JSS122 JFS224 User s Guide displaying array status 4 12 cache status for disk drives 8 6 configuration information 5 5 disk drives 8 2 events 5 2 hardware information 5 5 information about the other controller 7 15 partition status 4 27 pool spares 6 6 domain validation enabling or disabling 7 9 Down Drive 8 8 Drive Status 4 14 Drive Status screen 8 3 dri
208. tion capacity 4 26 4 33 status of 4 22 F failback defined 7 11 failover defined 7 11 FC Loop ID changing for controller 7 5 FC port problems with 9 2 FC port connecting to 2 2 FC ports disabling loop 2 7 19 enabling loop 2 7 19 features 1 1 B 1 firmware upgrading for the controller 7 29 Flash Utility screen 7 18 7 19 7 24 7 30 G Global Flags screen 8 14 Global Flags defined 8 12 4 Hardware Information 5 7 Hardware Information screen 5 7 5 8 hardware information displaying 5 5 histogram viewing for reads and writes 5 9 host channels configuring 7 4 problems with 9 2 selecting the link speed 7 4 host SCSI BIOS scan problems 9 4 9 5 hosts Active Active mode connectivity options C 18 C 21 connectivity options C 14 Stand Alone mode connectivity options C 16 C 20 Hot Swap Pause 7 28 hot swapping 7 27 VO pausing 7 27 resuming 7 28 initial Disk Array Administrator screen 3 2 initialization process stopping for arrays 4 15 initiator ID changing 7 9 installing the controller 2 1 K Kall Other 7 17 kill defined 7 11 killing the other controller 7 17 L LEDs blinking for disk drives 8 8 Index leftover drives clearing metadata from 8 3 lights blinking LEDs for disk drives 8 8 link speed selecting 7 4 log file capturing 5 4 viewing 5 2 Loop ID changing for controller 7 5 LOOP topology setting 7 4 LUN information 7 8 LUN Information screen 7 8 LUN screen 4 3 4 16 LUNs changing f
209. troller This is the same port used by the Administrator Utility and is always available Glossary A controller tIn Active Active mode one controller is designated as the A controller and the other controller is designated as the B controller Controller identity is determined by enclosure hardware The controller s identity displays continuously at the bottom of the Disk Array Administrator screens Address An address is a data structure or logical convention used to identify a unique entity such as a particular process or network device Arbitrated loop physical address AL_PA An AL PA is a 1 byte value used in an arbitrated loop topology This value is used to identify L_ Ports The value then becomes the last byte of the address identifier for each public L_Port on the loop Bus See Channel Channel A channel is a common physical path composed of wires or other media across which signals are sent from one part of a computer to another A channel is a means of transferring data between modules and adapters or between an adapter and SCSI devices A channel topology network consists of a single cable trunk that connects one workstation to the next in a daisy chain configuration All nodes share the same medium and only one node can broadcast messages at a time Fabric Fabric refers to a switched topology which is one of the three FC topologies Fabric elements which are responsible for frame routing i
210. troller will kill it This ensures that the failure does not interfere with the normal operation of the active controller In addition the Disk Array Administrator software displays an event letting you know that the passive controller has failed Controller A is the default active controller Controller B is always passive unless controller A fails The default active controller is not configurable More write back cache memory is automatically made available to the active controller since the passive controller does not need any space to mirror its data This means that half the cache memory can be dedicated to writes and half to reads This is the same allocation used in Stand Alone mode Controller A FAILED AHost0 FC Port 1 Phys Chan 0 Offline Offline AHost 1 FG Port 2 Phys Chan 1 Offline Offline Killed Other B Host o FC Por 1 Phys Chan 0 Active Active B Host 1 FC Port 2 Phys Chan 1 Active Active Controller B FAILED OVER Figure C 10 JSS122 active passive dual port configuration with two host channels and two back end channels controller A failed Controller A FAILED Phys Chan 0 lt Port A Host 0 FC Port 1 Offline Bypass Offline Phys Chan 1 Offline Phys Chan 2 Pon A Host 1 FC Port 2 Offline ypass Ofifine Phys Chan 3 Offline Killed Other
211. tus updates to the SEP and press Enter The system confirms that you want to make the changes 8 Select Yes and press Enter to make the changes 8 14 Troubleshooting Chaparral Technical Support For assistance configuring and using your Chaparral product contact your authorized distributor or Chaparral technical support at support chaparralnet com Resolutions to common problems you may encounter are described in the following sections Terminal Emulator and COM Port Problems Problem Screen continuously puts out garbage characters The likely cause of this problem is a baud rate mismatch between the terminal emulator and the controller The default baud rate is 115 200 Follow these steps if you set your terminal emulator to this rate and still get garbage characters 1 Ifyou are able shut down the controller See Rebooting the Controller on page 7 1 If you are unable to shut down the controller continue with step 2 2 Turm off the power to the enclosure containing the controller 3 Press the spacebar of your terminal emulator 4 Turn on the power while continuing to press the spacebar This will allow the controller to auto detect the baud rate setting 5 When the Flash Utility appears select option 5 to continue to boot the controller baud rate settings and you have to exit and restart the emulator to use the Note Some terminal emulators do not immediately change to the new new settings Problem
212. u should not disable the host channel when in Single Port and Port mode JFS224 Stand Alone Dual In Dual Port mode you can disable a channel when you plan to Port shut down the host on that channel Topology JFS224 All modes You should be sure that the controller s topology setting is correct for your configuration You can set the topology to m LOOP Use this option for all configurations except when the controller is connected to a switch F port m POINT TO POINT Use this option only when you connect the controller to a switch F port m Auto Detection JFS224 only Automatically detects the configuration based on the loop initialization process or port address of switch or fabric Use this option when you do not know what topology you are using or when you plan to change the configuration as you might during testing of the controller Link Speed JFS224 All modes You can set the speed to 1 GB or 2 GB In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller 7 4 Configuring the Controller Table 7 1 Host channel settings Continued Host channel setting Target ID Models available JSS122 JFS224 Modes available All modes All modes but only when using Loop topology Description SCSI target ID You may need to change the host channel s SCSI target ID when you
213. ubleshooting Problem All arrays are displayed during host SCSI BIOS scan but only one array is seen by the operating system SCSI drivers for some operating systems require a parameter switch to enable LUN support For example the NetWare driver ai 7870 dsk requires the driver parameter LUN_ENABLE FF in startup ncf to scan for all LUNs Check the driver documentation for your host SCSI channel You may also need to compact the LUN mapping Device SCSI Channel Problems Problem Not all drives connected to the controller device channels are displayed during boot or the controller hangs during display of connected drives and never reaches the Disk Array Administrator screen Check your array enclosure documentation to be sure that the enclosure is properly configured for use with a RAID controller If your enclosure supports removable drives check the drive shuttles to be sure that the power connectors SCSI connectors and ID connectors are properly seated Check termination and ID assignment If you have enabled Ultra Ultra2 SCSI on any device channels try disabling it amp Note Check the controller termination settings for all channels Problems During Bootup The following sections describe problems you might encounter during Power On Self Test POST or during bootup and explain how to resolve those problems POST shows problems related to the processor logic and memory Problem Controller failed the onboard me
214. umber of host write requests directed to the partition SecRd Total number of sectors read from the partition SecWt Total number of sectors written to the partition Queue Depth Current number of commands from the host that are queued up V O Size Last host I O block size request in 512 byte sectors Similar statistics are also available on an aggregate basis for all partition LUNs For more information see Displaying Overall Statistics on page 5 9 4 29 JSS122 JFS224 User s Guide To view the partition statistics 1 Display the partition menu From the Array Menu 1 From the System Menu select Array Menu and press Enter The Select Array screen displays with a list of existing arrays 2 Select the array you want and press Enter The array menu displays 3 Select Partition Menu and press Enter The Select Partition screen displays with a list of existing partitions for the current array 4 Select the partition you want and press Enter The partition menu displays From the All Partitions Menu 1 From the System Menu select All Partitions Menu and press Enter The Select Partition or Free Area screen displays with a list of existing partitions and free space 2 Select the partition you want and press Enter The partition menu displays 2 Select Partition Statistics and press Enter The statistics menu displays ystem Menu Array Menu Conf iguration Menu Add an Array Utilities Menu
215. ur computer system It also assumes that you are familiar with Fibre Channel configurations and basic network administration terminology Introduction Conventions This Guide uses several typographical conventions to help explain how to use the controller Convention Definition Bold Words in bold indicate items to select such as menu items or command buttons CTRL R Keys you press simultaneously In this example hold down the Ctrl key and press the r key Tips give you information that can help you improve the performance of E gt your system j Notes give you important information that may affect how you decide to set up your system Cautions warn you about actions that may permanently delete data or cause damage to your system Reference Documents External Documents m SCSI 2 and SCSI 3 Specifications ANSI standard documents Chaparral Documents m JSS122 JFS224 External Raid Controller Design In Handbook m Chaparral CAPI Functional Specification JSS122 JFS224 User s Guide Hardware Installation This chapter explains how to connect the controller in your RAID enclosure to your host computer The installation configuration and use of the JSS122 and JFS224 RAID controllers in all but the most basic of environments requires certain expertise on the part of the user Because there are many connections and configuration options involving host platforms host bus adapters HBAs storage enclosur
216. ures Changes to the SMART settings take effect after a Rescan or controller reboot SMART stands for Self Monitoring Analysis and Reporting Technology Board Temp 77 F 25 C gt A A MODE Controller A Mon Nov 26 14 35 56 2000 4 Select the option you want and press Enter 5 Reboot or rescan to have your changes take effect See Rebooting the Controller on page 7 1 or Rescanning All Channels on page 7 26 JSS122 JFS224 User s Guide 8 8 Blinking a Drive LED You can blink the LED on a specific drive To blink a drive LED from the Drive Utilities Menu 1 5 From the System Menu select Utilities Menu and press Enter The Utilities Menu displays Select Drive Utilities Menu and press Enter The Drive Utilities Menu displays Select Blink Drive LED and press Enter The Select Drive screen displays Select the drive you want and press Enter The drive continues blinking its LED until you do one of the following Press Esc before the Disk Array Administrator times out Repeat the blink LED command which toggles the blink LED command off Press Esc to stop blinking the LED Taking Down a Drive A Caution This function is only for testing and could result in data loss It should not be used in normal operation The Down Drive function sets the status of a drive in a fault tolerant array to down This forces the controller to remove it from the array and marks the array as critical At th
217. uring I O activity is 10 seconds You can restore all of the controller s default settings You may want to do this if the controller is not working properly and you cannot determine why This lets you then change the settings that are critical to your configuration To restore the default settings 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays Select Restore Defaults and press Enter The Restore Defaults screen displays The system confirms that you want to make the change Select Yes and press Enter to make the change The system confirms that the change is made Press Enter to return to the Configuration Menu Configuring the Controller Upgrading Firmware You can upgrade the firmware for the controller Information regarding the latest release of firmware and firmware updates is available from the Chaparral Web site www chaparralnet com and click Support You can also contact Chaparral technical support for firmware updates at 303 845 3200 or send e mail to support chaparralnet com Upgrading the Controller s Firmware You use the Flash Utility to download new firmware fla file for your controller to auto detect your VT 100 ANSI terminal baud rate and to run onboard diagnostics The Flash Utility is resident in the embedded firmware of the controller You access the Flash Utility using a computer with VT 100 ANSI terminal emulator software such as H
218. usly This is similar to other Chaparral RAID controllers In the active active and active passive configurations two RAID controllers operate as a pair If one controller fails the other can take over the failed controller s work Understanding Active Active and Active Passive Configurations Below are terms associated with active active and active passive configurations m A Controller One controller is designated as the A controller and the other controller is designated as the B controller Controller identity is determined by enclosure hardware The controller s identity displays continuously at the bottom of the Disk Array Administrator screens E Failback The act of returning ownership of controller resources from a surviving controller to a previously failed but now active controller The resources include disk arrays cache data and host ID information E Failover The act of temporarily transferring ownership of controller resources from a failed controller to a surviving controller The resources include disk arrays cache data and host ID information E Kill One controller can kill the other controller by resetting it and taking it offline m Other The opposite controller from the one currently being used that is not the local controller m Ownership In an active active configuration a single controller has ownership of the following resources arrays and dedicated spares When a co
219. ve if Disk Ch 1 Disk Ch 2 Host 0 passive if other Port slot B 2x2 other controller online active if failed over controller online active if failed over C 14 Table C 6 JFS224 controller physical channels Theory of Operation Table C 6 describes how controller physical channels are used in the nine controller configurations for the JFS224 Controller Physical FC Physical FC Physical Physical Physical Physical Configuration Loop 1 Loop 2 SCSI SCSI SCSI SCSI Channel 0 Channel1 Channel2 Channel3 Stand Alone Host 0 Disabled Disk Ch 0 Disk Ch 1 Disk Ch 2 Disabled 1x3 Stand Alone Host 0 Disabled Disk Ch 0 Disk Ch 1 Disk Ch 2 Disk Ch 3 1x4 Stand Alone Host 0 Host 1 Disk Ch 0 Disk Ch 1 Disk Ch 2 Disk Ch 3 2x4 Active Active Host 0 Host 1 Disk Ch 0 Disk Ch 1 Disk Ch 2 Disk Ch 3 Single Port slot controller A s_ passive if other A LUNs controller 2x4 online active if failed over controller B s LUNs Active Active Host 1 Host 0 Disk Ch 0 Disk Ch 1 Disk Ch 2 Disk Ch 3 Single Port slot passive if other controller B s B controller LUNs 2x4 online active if failed over controller A s LUNs Active Active Host 0 Host 1 active Disk Ch 0 Disk Ch 1 Disk Ch 2 Disk Ch 3 Dual Port slot A controller A s controller A s 2x4 LUNs LUNs if failed over controller B s LUNs Active Active Host 1 Host 0 Disk Ch 0 Disk Ch 1 Disk Ch 2 Disk Ch 3 Dual port slotB controller B s_ contr
220. ves blinking LED of 8 8 clearing metadata from 8 3 disabling SMART changes 8 7 disabling write back cache 8 4 displaying 8 2 enabling SMART changes 8 7 enabling write back cache 8 4 maximum by array type 4 1 minimum by array type 4 1 taking down 8 8 testing 8 9 using disks from different manufacturers A 5 using disks with different capacities A 5 viewing cache status cache 8 6 viewing status of 4 14 8 2 Dynamic Spare Configuration 6 4 dynamic spares enabling 6 3 E EMPs changing the enclosure status setting 8 12 changing the polling interval 8 12 changing the slot status setting 8 12 Enable Trust Array 4 24 Enable Trust Array screen 4 24 enabling domain validation 7 9 FC loop 2 7 19 host channels 7 4 SCSI channel 3 7 18 SMART changes 8 7 write back cache changes 8 4 Enclosure Features 7 7 enclosures changing LUNs 8 10 changing the enclosure status setting 8 12 changing the polling interval 8 12 changing the slot status setting 8 12 changing the temperature status setting 8 12 Enter Array Name screen 4 2 4 7 Enter New Name 4 22 4 34 error events 9 10 error messages 9 8 9 10 event log capturing 5 4 displaying 5 2 Event Log Menu 5 3 Event Log screen 5 3 events capturing the log file 5 4 displaying 5 2 error 9 10 viewing most recent 5 2 viewing one at a time 5 3 viewing whole screen of 5 4 warning 9 8 Expand Function 4 21 4 22 Expand Partition 4 33 Expand Status screen 4 22 expanding array capacity 4 20 parti
221. will not warn when it finds no installed battery nor will write back WB gt cache be disabled This option is for those who want to run with WB cache enabled but without a battery installed NOT RECOMMENDED AS YOUR DATA IS UNPROTECTED Note The controller reverts to write thru cache if the battery dies when enabled Board Temp 75 F lt 24 C A A MODE Controller A Mon Nov 26 13 14 65 2000 4 Select the option you want and press Enter 5 Reboot to have your changes take effect See Rebooting the Controller on page 7 1 Changing the Battery Age and Disabling the Battery Life Monitor Your controller monitors the life of your battery and creates an event when the battery nears the end of its life Controller batteries typically last about three years The event reminding you to replace the battery occurs after approximately 35 months of use The event displays each time you reboot the controller until you replace the battery and reset the battery age When you replace the battery you must reset the battery age using the Flash Utility as described below for the battery life monitor to work properly 7 23 JSS122 JFS224 User s Guide 7 24 You can also set the battery age at any time You might want to use this option if you install a battery from another controller and want to reset the battery reminder to display at the right time An option to disable the battery life monitor is also available C
222. y compensating for the minor capacity differences that occur between vendors For example two 18 GB drives from two different vendors may differ in capacity by 100 MB With a backoff of 0 you would not be able to replace an array member s slightly larger 18 GB drive with a smaller 18 GB drive If you intend to only use identical drives from the same vendor you can use a backoff of 0 The default setting is 1 backoff This default allows you to easily work with drives that have the same nominal capacity but different actual capacities The backoff percentage affects all arrays created on the controller after you set the percentage If the drives in an array are not equal in size the array capacity in a RAID 5 array is based on the smallest member s capacity The backoff percentage is then backed off the capacity from that amount In a dual controller configuration Active Active or Active Passive mode a change to this setting on either controller is automatically updated on the other controller 9 3 JSS122 JFS224 User s Guide To change the backoff percentage 1 From the System Menu select Configuration Menu and press Enter The Configuration Menu displays ystem Menu onf iguration Menu Set Date Time Backoff Percent Host Configuration Utility Priority Channel Configuration Alarm Mute SEP Configuration Option Configuration Disk Configuration Restore Defaults Menu Selection Help Set current syst
223. yperTerminal connected to the controller through the serial RS 232 interface The controller auto detects the baud rate when you hold down the spacebar on the computer while powering on the controller Valid baud rates are 9600 19 200 38 400 57 600 and 115 200 The default baud rate is 115 200 and is recommended to expedite the download process If your controller is set to Active Active mode follow the procedure below for both controller to make sure that both have the updated firmware cannot download new firmware using the CAPI host channel interface because the host channel has failed over to the surviving controller Refer to the Chaparral CAPI Functional Specification You can still download new firmware to the shutdown controller using the CAPI RS 232 interface or the Flash Utility Note When a single controller is shut down in Active Active mode you To upgrade the controller s firmware 1 Call Chaparral technical support for information about downloading the firmware updates See Chaparral Technical Support on page 9 1 2 From the computer connected to the controller access the Disk Array Administrator software See Chapter 3 Accessing the Disk Array Administrator Software 3 From the System Menu select Shutdown Restart and press Enter The system confirms that you want to shut down 4 Select Yes and press Enter The system confirms that it has shut down 5 Press Enter to reboot 7 29 JSS122 JFS224
224. ys HOST Topology Private Loop Port Enabled FC Speed 1G GBIC Receive Status Signal present Node WUN 1600005013D00484 Port WWN 0005013 Loop ID 1 FC Addr GE8 AL_PA Cntrly LUN 6 HOST 1 Passive Port Enabled FC Speed 1G GBIC Receive Status Signal present CHAN Initiator ID 6 Bus Speed 166 Domain Validation Enabled CHAN Initiator ID 7 Bus Speed 166 Domain Validation Enabled CFG Info Use up down arrows PageUp PageDown End Home Dump ESC Board Temp 75 F 24 C A A MODE Controller A Mon Nov 26 14 48 43 2000 5 Press CTRL E to display the next screen of configuration information or Ese to return to where you started from 5 8 Monitoring System Status Displaying Overall Statistics You can display two types of aggregate statistics for all partition LUNs m General statistics Similar statistics are also available for individual partition LUNs For more information see Viewing Partition Statistics on page 4 29 T O operations per second IOPS Bandwidth in millions of bytes per second Number of read operations Number of write operations Total sectors 512 bytes read Total sectors written Total current command queue depth across all LUNs m Host read write histogram that shows how many host reads and writes fell into a particular size range The I O ranges are based on powers of two 1 Sector 2 3 Sectors 4 7 Sectors 8 15 Sectors 16 31 Sectors 32 63 Sectors 64 127

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