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UltraTrak SX4000-SX8000 Manual v5

1. UtraTrak100 SX4000 SX8000 amp RM8000 User Manual ADVANCED FEATURE Stop RAID Conversion Press or V to move these items on the LCD Disable Buzzer Rebuild Sync Pri Smart Check Enabled HD Write Cache Enabled What you can do Press SEL Selects one of the following active functions Wipe out disk Moves the display to the Wipe out disk menu Synchronize Array Moves the display to the Synchronize Array menu Stop RAID Conversion Press to SEL stops a RAID conversion that is in progress The conversion process will continue when the UltraTrak is restarted Disable Buzzer Pressing SEL toggles between Enable and Disable Rebuild Sync Pri Moves the display to the Rebuild Sync Pri menu Smart Check Pressing SEL toggles between Enabled and Disable d HD Write Cache Pressing SEL toggles between Enabled and Disabled Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the Configure Array menu 4l Wipe Out Disk The Wipe Out Disk menu allows the user to delete the area on the hard drive that contains array information used exclusively by the UltraTrak controller It may be necessary to wipe out a disk if the disk was previously a member of an UltraTrak array and you wish to use the disk in a different UltraTrak array To wipe out a disk go to the Configuration menu and select Configure Array then select Advance Fea
2. The Source Array ID menu lists the defined arrays and their current RAID level Select array you wish to modify Only existing Array IDs are Displayed Array ID 3 un Press or v to move these items on the LCD Array ID 4 wu What you can do Press SEL Pressing SEL will choose the active array Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the previous menu 39 App New DRIVES The Add New Drives m enu lists the available free drives Select the drives you wish to add Only free drives are Displayed 7 IBM Free Press or V to move these items on the LCD 8 IBM Free What you can do Press SEL Pressing SEL will choose the active drive Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the previous menu TARGET RAID LEVEL The Target RAID Level menu lists the available RAID levels that you may convert your existing array to Only available RAID Levels are Displayed ond Press A or v to move these items on the LCD RAID 0 1 JBOD What you can do Press SEL Pressing SEL will choose the active RAID level Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the previous menu
3. PENRAN ULTRATRAK SX4000 ULTRATRAK SX8000 ULTRATRAK RM8000 USER MANUAL COPYRIGHT 2001 Promise Technology Inc Copyright by Promise Technology Inc Promise Technology No part of this manual may be reproduced or transmitted in any form without the expressed written permission of Promise Technology TRADEMARKS Promise and the Promise logo are registered in U S Patent and Trademark Office All other product names mentioned herein may be trademarks or registered trademarks of their respective companies IMPORTANT DATA PROTECTION INFORMATION You should back up all data before installing any drive controller or storage peripheral Promise Technology is not responsible for any loss of data resulting from the use disuse or misuse of this or any other Promise Technology product NOTICE Although Promise Technology has attempted to ensure the accuracy of the content of this manual it is possible that this document may contain technical inaccuracies typographical or other errors Promise Technology assumes no liability for any error in this publication and for damages whether direct indirect incidental consequential or otherwise that may result from such error including but not limited to loss of data or profits Promise Technology provides this publication as is without warranty of any kind either express or implied including but not limited to implied warranties of merchantability or fitness for a par
4. csececseeeceseeeeeeteeeeeeeeeeeeeees Choosing Stripe Block SiZ eeeeeeeeeeeeeeeeeeeees Choosing a RAID Level siccva ic ceceeineeecaeerival ad auetadiea anniediate dentate Expanding an Array cccicenacsiscoces Se eeedecctecscchcdtecnccea cevaheveseoeenes Erdan Karr ENE EE Eaa aan Eana RAID Conve rSiOn cccseccceeceseseeesesesesseseeeeeeeenerees HOT SPARE DRIVE S Partition and Format the Array sesceessscecesssseeeesseneeeeseaeeeeeseeasesesatatsenesasatenseranaeeeees Maintenance ss cachet rete eenle A R A E Drive Status INGiGAtOrs s sirena sche sccabevarseest svcd veessedaceedeerbseioreeeveeete Meaning of Status Indicators ceeceeeees Critical amp Offline Arrays eceeeeteeeeeeteteeeteteeeteneeees Rebuilding Synchronizing Fault Tolerant Arrays When a Disk Drive FailS e esceceseeseeeteeeeteeeees Replacing a Disk Drive Module Drive Replacement sisiran yieeede ded innean aoea peeteed nieleevatensvesnnentstoeeseeteeeis Replacing a Power Supply Module 8000 series ONLY c sccccsesseceeseeeesestsetetsees 22 UltraTrak Front Panel Interface The LCD Messages Idle MOge tiin iiie ai Initial Mode Menu Configuration Meni css edeti eiaa E A E AEE e View Status M nu ccceccccscsceceseeseeseeeseseeeeeeeeeeeees Configure Array cceeecscssececteeseeeeteteeeteteeeeetetetenens Co nfig re Cache rine neiaie eia E AE EA EE t Configure SO S aee aare Ee aeaa aae Ea
5. a problem that the firmware update addresses Update UltraTrak firmware by performing the following steps 1 2 gt Download the firmware upgrade package from www promise com With UltraTrak power off connect a Null Modem Cable between the COM1 connector on the back of the UltraTrak and a powered down computer connect to either COM1 or COM2 The computer must be capable of booting from an MS DOS floppy Insert a DOS Boot diskette into the computer power it on and allow it to boot to DOS Remove the DOS Boot diskette Insert a diskette containing the firmware upgrade executable and the UltraTrak firmware binary file At the DOS prompt type dir and press Enter to be sure that you have the correct files such as txbxx bin and ultra exe where xx is the firmware version number At the DOS prompt type ultra and press Enter Atthe Which COM Port is connected to UltraTrak prompt type COM x and press Enter where xis either a 1 or a 2 depending upon which COM port you are connected to Follow the instruction presented on the monitor and power on the UltraTrak b The following menu should display 1 Upload Image to UltraTrak 2 Download Image to UltraTrak 3 RESET FLASH 4 EXIT c Press 2 This is a safety precaution to ensure you have a copy of the current level firmware When done it will return to the above menu choices Reinstall the Promise Firmware Diskette press choice 1 and answer Y
6. and it uses distributed parity as in RAID 5 RAID 50 provided data reliability good overall performance and supports larger volume sizes RAID 30 also provides high reliability because data is still available even if two physical disk drives fail on in each array RAID 50 requires a minimum of six disk drives Data Block Parity Data alk ewer Figure 18 RAID 50 Striping of Distributed Parity Arrays 59 JBOD SPANNING In a Spanning array the disk array capacity is equal to the sum of all drives even if the drives are of different capacities Spanning stores data onto a drive until it is completely filled then proceeds to store data on to the next drive in the array There are no performance or fault tolerance array features in this type of array When a disk member fails the entire array is offline Figure 19 JBOD Spanning Uses Full Capacity of Drives 60 UtraTrak100 SX4000 amp SX8000 User s Manual Appendix B Frequently Asked Questions This section lists frequently asked questions involving pre installation drive issues installation and postinstallation Q What kind of hard drives can use for an UltraTrak array A You can use any Ultra ATA 133 100 66 33 hard drive s to create arrays on the UltraTrak You should use matching drives for multiple drive arrays to maximize capacity usage as well as performance NOTE Ultra ATA 133 hard drives can be used in the UltraTrak unit
7. data redundancy fault tolerance for ensuring continuous system operation in the event of a hard drive failure Different types of arrays use different organizational models and have varying benefits The following outline breaks down the properties for each type of RAID array RAID 0 STRIPING When a disk array is striped the read and write blocks of data are interleaved between the sectors of multiple drives see Figure 12 Performance is increased since the workload is balanced between drives or members that form the array Identical drives are recommended for performance as well as data storage efficiency The disk array s data capacity is equal to the number of drive members multiplied by the smallest array member s capacity For example one 100GB and three 120GB drives will form a 400GB 4 x 100GB disk array instead of 460 GB The stripe block size value can be set logically from 4KB 8KB 16KB 32KB and 64KB This selection will directly affect performance Larger block sizes are better for random disk access like email POS or web servers while smaller sizes are better for sequential access Data Block s ojs ajoj Figure 12 RAID 0 Striping Interleaves Data Across Multiple Drives 153s RAID 1 MIRRORING When a disk array is mirrored identical data is written to a pair of drives while reads are performed in parallel The reads are performed using elevator seek and load balancing techniques wh
8. Assignments Moves the display to the View Drive Assignments menu Define Array Moves the display to the Define Array menu Delete Array Moves the display to the Delete Array menu Expand Array Moves the display to the Expand Array menu RAID Conversion Moves the display to the RAID Conversion menu Advanced Feature Moves the display to the Advanced Feature menu Press A Moves the active message line up Press V Moves the active message line down Press EXIT Returns to the Configuration mode AUTO ARRAY SETUP FUNCTION The Auto Array Setup function provides a list of the available RAID levels Select the RAID level that you wish to configure your array with Only the available RAID levels are displayed RAID 3 RAID 5 RAID 30 RAID 50 JBOD What you can do Press SEL Pressing SEL will create the array with the selected RAID level See next display Press A Moves the active message line up Press V Moves the active message line down 23d UtraTrak100 SX4000 SX8000 amp RM8000 User Manual Press EXIT Press EXIT to cancel this function and return to the Configure Array menu You will see the following choice after you have selected a RAID level What you can do Press SEL Press A Press v Press EXIT Pressing SEL will create the array Cycle the UltraTrak power switch when told Please restart UTRAK Does nothing Does nothing Press EXIT to cancel this function and return to the Co
9. What you can do Press SEL Does nothing Press A Moves the active message line up Press V Moves the active message line down Press EXIT Returns to the Configuration mode 230s UtraTrak100 SX4000 SX8000 amp RM8000 User Manual Configure Array See page 25 Provides a list of available RAID levels View Drive Assignments See page 26 Provides a list of installed disk drives See page 27 RAID Level Stripe Block Size Gigabyte Boundary Add Remove Drives Initialization Save Changes Delete Array See page 29 Provides a list of assigned arrays Expand Array See page 34 Source Array ID Add New Drives Save Changes RAID Conversion See page 35 Source Array ID Target RAID Level Add New Drives Save Changes Wipeout Disk installed disk drives Synchronize Array Stop RAID Conversion Disable Buzzer assigned arrays Rebuild Sync Pri Smart Check See page 30 See page 31 2832 CONFIGURE ARRAY The Configure Array menu will allow the creation and deletion of arrays The configure array menu contains the following sub menus Define Array Press or V to move these items on the LCD Delete Array Expand Array RAID Conversion Advanced Feature What you can do Press SEL Selects one of the following active functions Auto Array Setup Moves the display to the Auto Array Setup menu Pressing SEL goes to the RAID Level menu press SEL again to get to the Auto Array Setup menu View Drive
10. be of equal capacity or larger than the failed drive In arrays where a hot spare is already installed the hot spare automatically replaces the failed drive When the failed drive is replaced the new drive becomes the new hot spare 3912 Reconstruction begins automatically as soon as a replacement drive becomes available to the array However if the replacement drive was formerly part of another array then the previous array information must be deleted from the replacement drive see page 37 Delete Array for more details before reconstruction begins A Attention The electronic components within the UltraTrak disk array are sensitive to damage from ESD Electro Static Discharge Appropriate precautions should be observed at all times when handling the array or its subassemblies DRIVE REPLACEMENT The bottom of the disk drive sets A the mounting assembly Secure the disk drive in place with four screws Drive Carrier Latching Mechanism 4 screws Drive Carrier Lock Figure 9 Drive Carrier Caution Do not replace the bad drive while reconstruction of the hot spare drive is in progress Wait until the System LED and all the drive LEDs except the failed drive are green before replacing the failed drive Do the following to replace an ATAhard drive 1 Open the Front Panel Door on the UltraTrak 2 Remove the hard drive you wish to replace from the UltraTrak by unlocking the Drive Carrier lock
11. level RAID 0 1 Characteristics Advantages Disadvantages Implemented as a mirrored array whose High disk overhead uses only 50 of segments are RAID 0 arrays total capacity High I O rates are achieved thanks to multiple stripe segments Recommended Applications for RAID 0 1 e Imaging applications 16 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual e Database servers e General fileserver RAID 30 Advantages Disadvantages High Read data transfer rate Higher disk overhead than RAID 3 High reliability Supports large volume sizes Recommended Applications for RAID 30 e Image Editing e Video streaming e Any application requiring high availability and high speed RAID 50 Characteristics Advantages Disadvantages High Read data transaction rate Higher disk overhead than RAD 5 Medium Write data transaction rate Good aggregate transfer rate High reliability Supports large volume sizes Recommended Applications for RAID 50 e File and Application servers e Transaction processing e Office application with many users accessing small files JBOD Uses 100 capacity of all hard drives The failure of just one drive will result in all data in an array being lost Should not be used in mission critical environments Recommended Applications for JBOD e File archiving e General fileserver EXPANDI NG AN ARRAY Expanding an array increases the array capacity without affecting data availability You can ex
12. size For example with the Gigabyte Boundary feature enabled the remaining working drives can be 20 5GB and the replacement drive can be 20 3 since all are rounded down to 20GB This permits the smaller drive to be used Please note that users will lose a small amount of available storage capacity from each drives in order to arrive at a common drive size CHOOSING STRIPE BLOCK SIZE There are two issues to consider when selecting the Stripe Block Size First you should choose a Stripe Block Size equal to or smaller than the smallest cache buffer found on any array disk drive Selecting a larger value slows the array down because disk drives with smaller cache buffers need more time for multiple accesses to fill their buffers Secondly if your data retrieval consists of fixed data blocks such as with some database or video applications then you should choose that size as your Stripe Block Size CHOOSING A RAID LEVEL There are several issues to consider when choosing the RAID Level for your UltraTrak array Appendix A Technology Background on page A53 gives some technical insight regarding each RAID choice and the following discussion summarizes some advantages disadvantages and applications for each choice RAID 0 Advantages Disadvantages Implements a striped disk array the data is Not a True RAID because it is not fault broken down into blocks and each block is tolerant written to a separate disk drive The fai
13. you have multiple arrays and are using ID mode be aware that each array will use a SCSI ID If for example you have created two separate arrays and have selected SCSI ID 4 array 1 would have SCSI ID 4 and array 2 would have SCSI ID 5 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual CONTACTING TECHNICAL SUPPORT Promise Technical Support provides several support options for Promise users to access information and updates We encourage you to use one of our electronic services which provide product information updates for the most efficient service and support If you decide to contact us please have the following information available e Product model and serial number e BIOS and driver version numbers e A description of the problem situation e System configuration information including motherboard and CPU type hard drive model s ATA ATAPI drives amp devices and other controllers TECHNICAL SUPPORT SERVICES Promise Online Web Site http Awww promise com tech documents drivers utilities etc USA Tech Support Center E mail Support support promise com Fax Technical Support 408 228 6401 Attention Technical Support Phone Technical Support 408 228 6402 7 30 5 30pm M F Pacific Standard Time If you wish to write us for Promise Technology Inc support Attn Technical Support 1745 McCandless Drive Milpitas CA 95035 USA 4 European Tech Support E mail Support Fax Technical Support Attenti
14. 0 and set the unit onto an already installed rack mount tray and then secure it to the rack with four screws Assemble the Mounting Bracket and Handle before installing the UltraTrak RM8000 into a rack see Figure 1 Part of Rack Handle ke Ty oy Mounting Bracket fl Sp Figure 1 Mounting Bracket Assembly only one of two sides shown Part of Rack yo Mounting Rail Front Door Release Screws 2 plc Rack Mounting Tray or Shelf Figure 2 Rack Mounted RM8000 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual INSTALL HARD DRIVES Before using the UltraTrak must first be populated with ATAhard drives The UltraTrak can support hard drives in the configurations listed below RAID Number of Hard Drives S400 8000 RAID 0 RAID 1 RAID 3 You may mix TETA and E size however best performance is achieved when you populate the array with identical models RAID 5 8 Before installing a new hard drive be sure the jumpers on the new hard drives are set for single or master operation Consult the drive manual for the proper settings Install new hard drives into the UltraTrak by doing the following 1 Open the Front Panel Door on the UltraTrak 2 Unlock the Drive Carrier Latching Mechanism and remove an unused Drive Carrier see Figure 3 on page 6 from the UltraTrak Begin at the top and work down 3 Attach the Drive Carrier power cable to the hard drive see Figure 10 on page
15. 00 amp SX8000 User s Manual RETURNING PRODUCT FOR REPAIR If you suspect a product is not working properly or if you have any questions about your product contact our Technical Support Staff through one of our Technical Services making sure to provide the following information e Product model and serial number required e Return shipping address e Daytime phone number e Description of the problem e Copy of the original purchase invoice The technician will assist you in determining whether the product requires repair If the product needs repair the Technical Support Department will issue an RMA Return Merchandise Authorization number Return only the specific product covered by the warranty do not ship cables manuals diskettes etc with a copy of your proof of purchase to Promise Technology Inc Customer Service Dept Attn RMA 1745 McCandless Drive Milpitas CA 95035 You must follow the packaging guidelines for returning products e Use the original shipping carton and packaging e Include a summary of the product s problem s e Write an attention line on the box with the RMA number e Include a copy of proof of purchase You are responsible for the cost of insurance and shipment of the product to Promise Note that damage incurred due to improper transport or packaging is not covered under the Limited Warranty When repairing returned product s Promise may replace defective parts with new or recondi
16. 22 4 Attach the Drive Carrier ATAdata cable to the hard drive see Figure 10 on page 22 5 Lower the hard drive into the Drive Carrier so that the screw holes on the bottom line up 6 Inserts crews through the holes in the Drive Carrier and into the bottom of the hard drive Tighten each screw be careful not to over tighten see Figure 9 on page 21 7 Slide the assembled Drive Carrier back into the UltraTrak and lock the Drive Carrier lock 8 Repeat steps 2 through 7 until all of the new hard drives are installed Front Panel Door Drive Carrier Lock ss Drive Carrier Latching Mechanism Drive Carrier Assembly Pulled part way out Hinges out toward Front Panel Door Figure 3 UltraTrak Disk Drive Access SX4000 Shown Note The Drive Carrier Latching Mechanism must be locked or the disk drive will not power up UtraTrak100 SX4000 SX8000 amp RM8000 User Manual CONNECTING THE SCSI CABLES Installation of the UltraTrak disk array is very similar to the installation of a standard SCSI drive The SCSI connector accepts the standard 68 pin LVD SCSI connector used on most LVD SCSI devices Refer to your system and or SCSI host adapter manual for additional installation procedures that may apply to your system or host adapter a SCSI Connector Input A er AE SCSI Connector Output Power Switch Voltage Select Switch S Figure 4 Back of UltraTrak SX4000 see Figure 11 for SX8000 and RM
17. 8000 Caution To prevent possible damage to the array or system ensure that system power is OFF before connecting the cables SCSI CABLE CONNECTION AND TERMINATION Two 68 pin wide SCSI connectors are provided on the back of the enclosure for connecting the array to the system These connectors are used in one of two ways e If the UltraTrak disk array is the only external SCSI device or is the last external device in a daisy chained configuration connect the incoming cable the one which is attached to the SCSI adapter to the top connector and set the internal SCSI Terminator to Enable see Enable or Disable SCSI Terminator below and Configure SCSI on page 44 e If the array is to be placed in the middle of a daisy chained configuration connect the incoming cable the one which is attached to the SCSI adapter to the top connector and connect the outgoing cable the one which continues on to other devices to the other connector In this case no terminator is required at the array but the last device in the daisy chain must be terminated Correct SCSI termination procedures require that the first and last devices on the SCSI bus be terminated If the first or last device is not terminated or if devices other than the first and last are terminated erratic SCSI bus performancemay occur Typically the system or host adapter is the first device and is already terminated When installing the UltraTrak disk array on a SCSI bus with oth
18. X4000 SX8000 amp RM8000 User Manual INTRODUCTION Thank you for purchasing Promise Technology s UltraTrak SX4000 UltraTrak X8000 or UltraTrak RM8000 external disk array system UltraTrak provides data storage solutions for applications where fault tolerance and data redundancy are required The failure of any single drive will not affect data integrity or accessibility of the data A defective drive may be replaced without interruption of data availability to the host computer A hot spare drive will automatically replace a failed drive securing the fault tolerant integrity of the array The self contained hardware based array provides maximum performance in a compact external chassis The UltraTrak SX4000 is an external disk array with an expandable capacity of up to four individual disk drives The UltraTrak SX8000 and RM8000 are external disk arrays with an expandable capacity of up to eight individual disk drives The standard LVD SCSI interface provides compatibility with any system that utilizes a SCSI interface No vendor unique commands are required for the operation of the disk array ARCHITECTURAL DESCRIPTION The UltraTrak disk array consists of either four SX4000 or eight SX8000 RM8000 disk drive bays an enclosure with back plane and the array controller Multiple fans provide redundancy to ensure continued usage during component failure The array controller is hardware based and controls all array functions transpare
19. a a eaer Te Eep NAE aea aa Contacting Technical Support sinsin nnn a aaa aa aata ea E aia is 46 T chnical Support Services i ie iececsscsdesicaetsesscsp peta fiaee ssaserensa anecasteeedvigeeasere tees 46 Limited Warranty j2 i 2005 a a eet Are eels Ba ra Dele 49 Disclaimer of Other warranties os eeesesssceceseeseeeeeseeeeeeeaeeeeeceeaseeeesataeeeesasatenseratateeees 49 Returning Product For Repairs snenia nen a Your Responsibilities eeeeeeeeeerereerre Appendix A Technology Background Introduction to RAID ssssessseserererererierrisrerisrsrnnn RAID 0 STRIPING eeececseeceeeeeeeeeeteeeeeeeeeeenenenesens RAID 1 MIRRORING ceeceececeeeeeeeeeeeeeeeeeeeeteeees RAID 0 1 STRIPING MIRROR sssi RAID 3 BLOCK STRIPING WITH PARITY DRIVE RAID 5 BLOCK AND PARITY STRIPING ossessi RAID 30 STRIPING OF DEDICATED PARITY ARRAYS ossessi 58 RAID 50 STRIPING OF DISTRIBUTED PARITY ARRAYS ossos 59 JBOD SPANNI N Gi do den en terete ata ae vena eee 60 Appendix B Frequently Asked Questions ce eeeeseeeseseeeeeeeseeeeeeeeeeeeteteteteeeeeteteeeteteeeeees 61 Appendix C Update UltraTrak Firmware ccscecssscecscececeeeseeeseeeeeeeetseeeeteteeeneeeteeeeeeeneeeeees 63 Appendix D Instructions for Replacing the Controller Card eceesseeeeseseeeeeeeeeees 65 Remove the Controller Board Install the Controller BO ard ce ccceseccos cccxsevesseicasseigeoeetene nunni Nie UtraTrak100 S
20. ach power supply is capable of providing the power needed to maintain the array s normal operation Each power supply LED should be on An off or blinking LED on the power supply indicates that the power supply has failed and should be replaced A power supply failure is also accompanied by an audible alarm NOTE press the Power Supply Alarm Reset button to turn off the alarm Contact your dealer or reseller for additional details and assistance in obtaining a replacement supply These power supplies are accessible from the rear of the unit see Figure 11 The power supply may be removed and replaced with an identical power supply while the array remains in operation To protect the electronic circuits special sensing circuitry is incorporated into the design of the UltraTrak 8000 series disk array that detects the insertion or removal of a power supply Only trained and qualified personnel should remove the power supplies from the UltraTrak units Switch the failed power supply Off Remove the power supply locking screw Using the pull handle on the power supply pull it from the chassis Insert the new power supply into the chassis and switch the power supply power On Check that the Power LED indicator is illuminated 6 Insert and tighten the power supply locking screw a a fol a ae Caution Risk of electrical shock When either power supply module is removed from the chassis AC power is accessible at the circuitry in t
21. alculates redundant data sim ilar to the rebuild process and matches the data on the drive s To synchronize the array go to the Configuration menu and select Configure Array then select Advance Features and choose Synchronize Array WHEN A DISK DRIVE FAILS The UltraTrak provides both audible and visual indicators alerting you of a drive failure The following occur when a disk drive fails or goes offline e Continuously produces short beeps every two seconds when a drive fails e Continuously produces long beeps every 15 seconds when a drive is offline e The Status LED on the front panel is yellow e The disk drive Status LED inside front panel door is red e The LCD displays a status message about the failure REPLACING A DISK DRIVE MODULE UltraTrak disk drive modules should not be removed unless it has been determined that a drive in the array has failed Generally a disk drive that is a member of a fault tolerant array may be replaced at any time without affecting the availability of data to the system Depending on the RAID type drive removed and type of access performance may be reduced until the drive is replaced Disk drives may be replaced while UltraTrak is running special circuitry is designed into the UltraTrak that protects the components and notifies the processor Only a failed drive should be removed from the array Removing any other drive may cause the array to become unavailable The replacement drive must
22. and sliding out the Drive Carrier 3 Unplug the power cable and the ATA data cable from the old hard drive 4 Remove the four screws that secure the hard drive to the Drive Carrier and remove the old hard drive from the Drive Carrier 5 Prepare to install the new hard drive by ensuring that the jumpers on the new hard drive are set for single or master operation Consult the drive manual for the proper settings 6 Attach the Drive Carrier power cable to the new hard drive Attach the Drive Carrier ATAdata cable to the new hard drive 8 Lower the new hard drive into the Drive Carrier so that the screw holes on the bottom line up a pE UtraTrak100 SX4000 SX8000 amp RM8000 User Manual 9 Insert screws through the holes in the Drive Carrier and into the bottom of the new hard drive Tighten each screw be careful not to over tighten 10 Slide the assembled Drive Carrier back into the UltraTrak and lock the Drive Carrier lock Disk Drive Connect Power Cable to the Disk Drive r Connect Drive Data Cable Drive Carrier A Latching Mechanism tortha Disk Drive Figure 10 Connecting Cables to Disk Drive Caution Only qualified service personnel should remove and replace a power supply module REPLACING A POWER SUPPLY MODULE 8000 SERIES ONLY The UltraTrak SX8000 and RM8000 disk array contains two hotswappable redundant power supplies Normally these s upplies share the load between them However e
23. d Y button to select the SCSI ID number and then press the SEL button See page 45 for more details Press the EXIT button until you return to the Idle mode See page 25 for more details 11 CONFIGURE THE ULTRATRAK The configuration procedures for the UltraTrak SX4000 UltraTrak SX8000 and UltraTrak RM8000 are exactly the same The following procedures provide the basic steps needed to create an array and get your UltraTrak running quickly Before beginning you need to decide if you will create an array using the automatic setup features or if you will create the array manually Both procedures are provided but you can only use one of them You may want UltraTrak to create the array for you if you do not have a good technical unders tanding of various RAID technologies How TO AUTOMATICALLY CREATE AN ARRAY C0 OF OT ce GIN i 11 12 13 Ensure that the UltraTrak power is off Install the disk drives into the UltraTrak and lock the Drive Carrier lever Switch the power on and wait for the UltraTrak to initialize Press the SEL button on the front panel Press Y button once to select Configuration then press SEL button Enter the password at the prompt see Enter Password on page 10 At Configure Array press SEL Array Setup should be selected press SEL If the message No Free Disk appears it means that an array has already been configured If you wish to re create a new array then you need to first d
24. dundancy An added plus for using RAID 0 1 is that in many situations such an array offers double fault tolerance Double fault tolerance may allow your data array to continue to operate depending on which two drives fail Data Block G Striped Drives Gi Striped Drives sfa e cl SB Figure 14 RAID 0 1 Striping and Mirroring of Two Drive Pairs 55 RAID 3 BLOCK STRIPING WITH PARITY DRIVE RAID level 3 organizes data across the physical drives of the array and stores parity information on to a drive dedicated to this purpose This organization allows increased performance by accessing multiple drives simultaneously for each operation as well as fault tolerance by providing parity data In the event of a hard drive failure data can be re calculated by the RAID system based on the remaining drive data and the parity information The adjustable block size of the RAID 3 array allows for performance tuning based on the typical I O request sizes for your system The block size must be set at the time it is created and cannot be adjusted dynamically Generally RAID Level 3 tends to exhibit lower random write performance due to the heavy workload going to the dedicated parity drive for parity recalculation for each I O The capacity of a RAID 3 array is the smallest drive size multiplied by the number of drives less one Hence a RAID 3 array with 4 100 GB hard drives will have a capacity of 300GB An array with 2 120GB hard dr
25. e Thru and Write Back Cache Flush Frequency Moves the display to the Cache Flush Frequency menu Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the Configuration menu Setting the Write Cache to Write Back improves performance because a write to the high speed cache is faster than to disk Data normally written to disk is first written into the UltraTrak s cache allowing the system CPU to continue with other tasks while the UltraTrak handles writing data from it s cache to the array However write back cache data is lost with a system power outage or other event where the data has not yet been saved to disk Setting the Write Cache to Write Thru forces UltraTrak to immediately save all writes to the drive UtraTrak100 SX4000 SX8000 amp RM8000 User Manual Configure SCSI SCSI ID List SCSI IDs 0 thru 15 to be selected from SCSI Terminator CONFIGURE SCSI See page 34 The Configure SCSI menu will allow the setting of SCSI parameters The following parameters are set in the configure SCSI menu SCSI Terminator Enabled What you can do Press SEL Selects one of the following active functions Mode Move the display to the Mode menu SCSIID Move the display to the SCSI ID menu SCSI Terminator Pressing SEL toggles between Enabled and Disable d Press A Moves the active message line up Act
26. easure used to avoid problems with data integrity Synchronizing simply recalculates redundant data similar to the rebuild process and matches the data on the drive s REBUILD SYNC PRI Assigns the amount of importance that UltraTrak gives to rebuilding synchronizing data in the background A High setting assigns most of UltraTrak s resources to the rebuild process at the expense of responding to ongoing read write data requests by the operating system A Low setting gives priority to ongoing read write data requests by the operating system at the expense of the rebuild synchronization process and will typically result in longer rebuild synchronization times The default setting is High To set the Rebuild Sync priority go to the Configuration menu and select Configure Array then select Advance Features and choose Rebuild Sync Pri What you can do Press SEL Toggles the Rebuild Sync priority between High or Low Press A Does nothing Press V Does nothing Press EXIT Returns to the Advance Feature menu 43 Configure Cache WriteCache Cache Write Back Write Thru Read Ahead Cache Flush Frequency 2 default See below CONFIGURE CACHE The Configure Cache menu will allow the setting of cache parameters The following param eter is set in the Configure Cache menu Cache Flush Frequency What you can do Press SEL Selects one of the following active functions Write Cache Toggles between Writ
27. elected RAID level See Choosing a RAID Level on page 14 for help in choosing the proper RAID level Note A If you wish to make a RAID 0 1 array using 4 6 or 8 drives you need to 11 12 choose RAID 1 mirroring and then follow the steps below to create the array Press SEL to assign Stripe Block Size 64KB is the default value and is optimum for most applications Choosing the proper Stripe Block Size facilitates efficient data flow You might want to choose a different value if you know the size of the cache buffer in your hard drives or the average data block size of the data you retrieve See Choosing Stripe Block Size on page 14 for more information Press V button to choose the Gigabyte Boundary feature Press SEL to toggle between Gigabyte Boundary ON and Gigabyte Boundary OFF The size of the array is always restricted by the size of the lowest capacity disk drive Gigabyte Boundary ON recommended causes the size of the array to be rounded down to the nearest whole gigabyte Gigabyte Boundary OFF does not round off the size of the array For example Enabled 1 6GB 1GB Disabled 1 6GB 1 6GB See 213 Gigabyte Boundary below for more information Note A The Gigabyte Boundary feature is only available for RAID levels 1 0 1 3 5 30 and 50 13 Press button to choose the Add Remove Drives feature then press SEL 14 Use the and button to select each drive Press SEL to toggle between adding or rem
28. elete the existing array before you can proceed See page 37 Delete Array for more details With RAID Level selected press SEL Use the V and button to select the proper RAID level for your array press SEL to choose the selected RAID level See Choosing a RAID Level on page 14 for help in choosing the proper RAID level Press SEL to create the array or press EXIT to cancel If you elected to create the array then you should see the message Array has been created Switch the UltraTrak power off wait a few seconds and switch the power back on You have successfully created an array automatically If you haven t already done so you need to select a SCSI ID before you can begin using the UltraTrak How TO MANUALLY CREATE AN ARRAY SOON ON Ensure that the UltraTrak power is off Install the disk drives into the UltraTrak and lock the Drive Carrier lever Switch the power on and wait about one minute for the UltraTrak to initialize Press the SEL button on the front panel Press Y button once to select Configuration then press SEL button Enter the password at the prompt see Enter Password on page 10 At Configure Array press SEL 12 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual 8 9 10 Press Y button twice to select Define Array then press SEL With RAID Level selected press SEL Use the Y and button to select the proper RAID level for your array press SEL to choose the s
29. er devices make sure the above rules are observed with all devices on the SCSI bus Consult your system and or host adapter manual for additional information on correct termination procedure Caution Improper system operation may occur if the SCSI termination is incorrect Proper termination and SCSt3 compliant cables must be used A SCSI8 compliant cable is included with the UltraTrak Do not use an active external terminator if the internal terminator is enabled ENABLE OR DISABLE SCSI TERMINATOR The UltraTrak SX4000 SX8000 and RM8000 are equipped with a configurable internal SCSI terminator This terminator must be enabled when the UltraTrak is the last SCSI device in the chain NOTE termination is enabled by default Do the following to enable or disable the internal SCSI Terminator 1 Switch the power on and wait for the UltraTrak to initialize Press the SEL button on the front panel 2 3 Press Y button to select Configuration mode then press SEL 4 Enter the correct password the press SEL see Enter or Change the Password on page 10 a Press Y button to select Configure SCSI then press SEL 6 Press button to select SCSI Terminator then press SEL to toggle between Enabled and Disabled 7 Press the EXIT button until you return to the Idle mode See page 25 for more details UtraTrak100 SX4000 SX8000 amp RM8000 User Manual DAISY CHAINING MULTIPLE ARRAYS Use a standard 68 pin SCSI 3 cable assembly
30. ere the workload is distributed in the most efficient manner Whichever drive is not busy and is positioned closer to the data will be accessed first With RAID 1 if one drive fails or has errors the other mirrored drive continues to function This is called Fault Tolerance Moreover if a spare drive is present the spare drive will be used as the replacement drive and data will begin to be mirrored to it from the remaining good drive of g Data Block N uj ej anjo Figure 13 RAID 1 Mirrors Identical Data to Two Drives Due to the data redundancy of mirroring the drive capacity of the array is only the size of the smallest drive For example two 100GB drives which have a combined capacity of 200GB instead would have 100GB of usable storage when set up in a mirrored array Similar to RAID 0 striping if drives of different capacities are used there will also be unused capacity on the larger drive 54 UtraTrak100 SX4000 amp SX8000 User s Manual RAID 0 1 STRIPING MIRROR Striping mirroring combines both of the previous array types It can increase performance by reading and writing data in parallel while protecting data with duplication At least four drives are needed for RAID 0 1 to be installed With a four drive disk array drive pairs are striped together with one pair mirroring the first pair The data capacity is similar to a standard mirroring array with half of the total storage capacity dedicated for re
31. gure 4 on page 7 Getting started with the UltraTrak consists of the following steps Unpack UltraTrak storage subsystem page 3 Install Hard Drives page 3 Connecting the SCSI Cables page 7 Connect Power Cable and Switch Power On page 10 Enter or Change the Password page 10 Assign a SCSI ID page 11 Configuring the UltraTrak page 12 8 Partition and Format the Array page 16 UNPACK ULTRATRAK Open the UltraTrak box and carefully remove the UltraTrak unit and accessories from the box Be sure to remove the packing foam from within the UltraTrak door The UltraTrak and accessories include the following items AIOS GOT a e UltraTrak unit e Power cord e UltraTrak User Manual e Screw sets for hard drives e Two drive carrier keys e Bracket assembly package RM8000 only e Null Modem Cable e External LVD SCSI cable Caution Packing foam was placed inside the front panel door to prevent damage during shipping Remove this packing foam and retain it for future use 4 Rubber Feet RM8000 only MOUNT UTRATRAK RM8000 1N RACK The UltraTrak may be installed in any convenient location within the LVD SCSI cable length distance of the next SCSI device The UltraTrak RM8000 is designed specifically for rack mount installation but may also serve on a bench top as well The UltraTrak RM8000 installs on a customer supplied standard 19 wide rack mount tray Assemble the Mounting Brackets on each side of the RM800
32. he power supply chassis Only trained and qualified personnel should remove the power supplies Ee sw SCSI Connector Input o je SCSHOUT SCSI Connector OutputTerminator Power Switch Power Supply Module 1 Power Supply Switch Power Supply Power Select Switch Alarm Reset Power Supply Module 2 Figure 11 Back of UltraTrak SX8000 similar to RM8000 24 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual ULTRAT RAK FRONT PANEL INTERFACE The front panel interface for the UltraTrak consist of following items Ow aS Promise UltraTrak ad Press Select for menu SEL EXIT No Array is defined Re 30 C 86 F 4500RPM z scsi BUS SEL EXIT Typeofinterface Name Comments LED Indicators Power Indicator O Status Activity Indicator Green Enclosure functioning normally Amber An array is critical a power supply has failed or a fan has failed An array is offline or the enclosure is too hot amp SCSI Bus Activity Indicator blinks to indicate activity on the SCSI bus Liquid Crystal Message Display This is a 24 character by 2 row LCD that displays Display Panel various setup status and error messages Control Buttons Pressing this button scrolls any available messages up through the LCD and activates a message for the Select button Pressing this button scrolls any available messages down through the LCD and activates a message for the Select button
33. hen a drive is removed or fails Due to the fault tolerance of the array the data is still available and online However once the array goes critical the array has lost its fault tolerance and performance may be adversely affected If the fault was caused by a drive that was removed the drive should be replaced by another drive either identical or larger in order for the RAID system to rebuild and restore optimal configuration 20 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual A non fault tolerant array goes offline when a drive is removed or fails Since the array is not fault tolerant the data stored in the array is no longer accessible If the drive was removed then it should be replaced to restore accessibility to the array If the drive failed then the entire array must be deleted and re initialized since all data is considered lost REBUILDING SYNCHRONIZING FAULT TOLERANT ARRAYS Though a critical array can continue storage operations it no longer offers fault tolerance and should be addressed as soon as possible by replacing the missing or failed drive s Rebuild takes a replacement drive assigns it to the array and then writes the redundancy data to it Once the rebuild process is complete the array status is upgraded from critical to functional and fault tolerance is restored Synchronization is a preventative maintenance measure used to avoid problems with data integrity Synchronizing simply rec
34. here the values shown are simply examples Cache Read Hit 10 Press or V hese i he LCD Cache Write Hit 15 ress or to move these items on the A What you can do Press SEL Does nothing Press A Moves the active message line up Press V Moves the active message line down Press EXIT Returns to the Configuration mode sgi VIEW ARRAY INFORMATION The View Array Information mode displays the array ID array size RAID level and array status Functional Critical Offline Rebuilding and Synchronizing If these modes of display require more than 2 lines to display information the up and down keys will be used to scroll the display The Array ID may be 1 amp Where the values shown are simply examples RAID 0 Functional RAID 0 bs Functional Array is Functioning properly RAID 1 Critical The array is in a degraded mode RAID 3 Rebuilding x Array is rebuilding x done RAID 5 Offline Array is down RAID 30 Synchronizing x Array is synchronizing x done RAID 50 RAID 0 1 JBOD What you can do Press SEL Does nothing Press A Moves the active message line up Press V Moves the active message line down Press EXIT Returns to the View Status mode View ENCLOSURE The View Enclosure menu displays the following information Where the values shown are simply examples Temp3 30 C 86 F Press or V to move these items on the LCD FAN 1 4782 RPM FAN 8 4983 RPM 5VIN 5 07V 12VIN 12 02V
35. ive is marked by Press v Moves the active message line down Active is marked by Press EXIT Returns to the Configuration menu 45 MoDE Select one of the following SCSI ID modes Selected toggles between these two when SEL is pressed What you can do Press SEL Selects one of the following active functions ID Select device ID mode LUN Select LUN logical unit number mode Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the Configure SCSI menu When using ID mode if you have multiple arrays within an UltraTrak unit each array will use a separate SCSI ID When using LUN mode each UltraTrak unit will use a single SCSI ID with the first array being LUN 0 the second array being LUN1 etc Enable Multiple LUN support in your SCSI adapter if you choose LUN mode In most cases it is preferable to use ID mode SCSI ID Select a SCSI ID between 0 and 15 2 Press or v to move these items on the LCD 15 What you can do Press SEL Selects one of the following active functions from a list of numbers Selects the SCSI ID The word Selected appears next between 1 and 15 to the selected ID Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the Configure SCSI menu Note A If
36. ives and 1 100GB hard drive will have a capacity of 200GB 6 5 Parity Data 4 a 2 1 Data Block Figure 15 RAID 3 Multiple Drives Stripe Data w One Dedicated Parity Drive UtraTrak100 SX4000 amp SX8000 User s Manual RAID 5 BLOCK AND PARITY STRIPING RAID 5 is similar to RAID 3 as described above except that the parity data is rotated across the physical drives along with the block data Having the parity data striped across all the physical drives in this manner removes the random write performance bottleneck of RAID 3 The total capacity of a RAID 5 array is calculated the same as a RAID 3 array Data Block Parity Data aa TEE Figure 16 RAID 5 Stripes all Drives with Data and Parity Information 57x RAID 30 STRIPING OF DEDICATED PARITY ARRAYS Raid 30 combines both RAID 3 and RAID 0 features Data is striped across disks as in RAID O and it uses dedicated parity as in RAID 3 RAID 30 provides high fault tolerance and supports larger volume sizes RAID 30 also provides high reliability because data is still available even if two physical disk drives fail on in each array RAID 30 requires a minimum of six disk drives Data Block Figure 17 RAID 30 Striping of Dedicated Parity Arrays 58 UtraTrak100 SX4000 amp SX8000 User s Manual RAID 50 STRIPING OF DISTRIBUTED PARITY ARRAYS Raid 50 combines both RAID 5 and RAID 0 features Data is striped across disks as in RAID 0
37. lure of just one drive will result in all I O performance is greatly improved by data in an array being lost spreading the I O load across many Should not be used in mission critical channels and drives environments No parity calculation overhead is involved Recommended Applications for RAID 0 e Image Editing 15 e Pre Press Applications e Any application requiring high bandwidth RAID 1 Advantages Disadvantages Simplest RAID storage subsystem design High disk overhead uses only 50 of total capacity Can increase read performance by processing data requests in parallel since the same data resides on two different drives Recommended Applications for RAID 1 e Accounting e Payroll e Financial e Any application requiring very high availability RAID 3 Advantages Disadvantages High Read data transfer rate Parity drive can become bottleneck if a lot Disk failure has an insignificant impact on of data s being Written to the array throughput Recommended Applications for RAID 3 e Image Editing e Prepress Applications e Any application requiring high throughput RAID 5 Characteristics Advantages Disadvantages High Read data transac tion rate Disk failure has a medium impact on Medium Write data transaction rate throughput Good aggregate transfer rate Recommended Applications for RAID 5 e File and Application servers e WWW E mail and News servers e Intranet servers e Most versatile RAID
38. m can trigger and flush the cache as necessary NOTE powering off before a proper shutdown is complete may result in the loss of unwritten data in the cache possibly causing problems in a subsequent boot or access to the data that was unwritten 61 Why can t I see the drives on the UltraTrak under FDISK If you have not created an array the physical drive s attached to the UltraTrak card will not be recognized by the operating system The UltraTrak controller is dedicated to RAID array management and does not provide any means of addressing individual hard drives through the int 13h interface used by FDISK In order to access drives on the UltraTrak from MSDOS at all you must first create a RAID array Why can t I see the array I just created in the Windows NT 2000 XP Disk Administrator Since Windows NT 2000 XP does not yet support any method of dynamically adding and or removing logical devices to from the system you must restart Windows The next boot will show the new array under Disk Administrator 62 UtraTrak100 SX4000 amp SX8000 User s Manual APPENDIX C UPDATE ULTRAT RAK FIRMWARE Caution A Be sure that you are using the carect firmware file for your particular model of UltraTrak Using an incorrect file will cause the unit to not function Firmware updates may be available on the Promise web site www promise com Promise recommends updating the UltraTrak firmware only if you are experiencing
39. message EXIT Pressing this button exits the active message display to the previous level 25 THE LCD MESSAGES The UltraTrak LCD message display panel has the following modes of operation e Idle mode e Error mode e Initial mode Idle Mode See below Provides an error message Initial Mode See page 23 View Status See page 25 Configuration See page 24 Change Password See page 8 IDLE MODE The Idle mode message such as shown below is displayed during normal operation of the UltraTrak when there are no problems or buttons being pressed Array status may be Array Functional Array Critical Array Offline ner you cando No array is defined Press SEL Press to enter Initial mode menu Press A Press to enter Initial mode menu Press v Press to enter Initial mode menu Press EXIT Do nothing 2b UtraTrak100 SX4000 SX8000 amp RM8000 User Manual The first line of the Idle mode menu will display one of the following status messages e Array Functional The array is fully operational and no problems are present e Array Critical The array is operational but has lost its fault tolerance For RAID array levels 1 0 1 3 5 30 and 50 the array contains a failed drive The user should identify and replace the failed drive e Array Offline The array is no longer operational The array must be rebuilt from the last tape backup or other device For RAID levels 1 0 1 3 5 30 and 50 at leas
40. n 8 Status 5VIN 12VIN VIEW STATUS MENU The View Status menu allows the user to select the information he wishes to view with the following menu View Array Information View Enclosure What you can do Press or M to move these items on the LCD Press SEL Selects one of the following active functions View Controller Info Moves the display to the View Controller Info menu View Cache Stats Moves the display to the View Cache Stats menu View Array Information Moves the display to the View Array Information menu View Enclosure Moves the display to the View Enclosure menu Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the Configuration mode 30 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual View CONTROLLER INFORMATION The View Controller Information mode displays UltraTrak firmware revision memory size and hardware revision Where the values shown are simply examples Firmware Rev 1 0 0 15 Press or V to move these items on the LCD What you can do Press SEL Does nothing Press A Moves the active message line up Press V Moves the active message line down Press EXIT Returns to the Configuration mode View CACHE STATS The View Cache Stats mode displays the cache memory size cache block size the cache read hit percentage rate and the cache write hit percentage rate W
41. n to select Change Password Press the SEL button Enter Old Password Enter New Password Press Exit at the New password saved prompt cde ceed 10 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual RESET TO DEFAULT PASSWORD You can reset the password back to its default value of 0000 by momentarily shorting pins 1 and 2 of the Password Reset Jumper located on the controller board See Appendix D Instructions for Replacing the Controller Card at the end of this manual for information about accessing the controller board Short Pins 1 and 2 to Reset the Password Sx4000 SX8000 this edge is foward the front RM8000 this edge is foward the rear Figure 7 Location of Password Reset Jumper on Controller Board ASSIGN A SCSI ID Each device on a SCSI chain must have a unique ID The default SCSI ID setting of the UltraTrak is 0 If you need to change the SCSI ID setting of the UltraTrak do the following 1 2 3 4 From the Idle mode display press the SEL button on the front panel Press V button once to select Configuration then press SEL button Enter the password at the prompt see Enter Password on page 10 At the Configuration menu use the Y button to select Configure SCSI and then press the SEL button See page 44 for more details At the Configure SCSI menu use the Y button to select the SCSI ID and then press the SEL button See page 45 for more details At the SCSI ID menu use the an
42. nce but loses the data redundancy RAID 3 RAID 0 Increases the capacity and performance but loses the data redundancy RAID 1 RAID 3 Adds performance capacity and redundancy but requires a RAID 1 RAID 5 minimum of one free drive RAID 1 RAID Adds performance and capacity 0 1 RAID 1 RAID 0 Increases the capacity and performance but loses the data redundancy RAID 0 Any RAID 0 can be migrated to any other RAID level if additional free drives are available Do the following steps to expand an array Press the SEL button on the front panel Press Y button once to select Configuration then press SEL Enter the password at the prompt see Enter Password on page 10 At Configure Array press SEL RAID 3 RAID 5 Retains the same capacity but allows parity to be striped across the array Press Y button a few times to select RAID Conversion then press SEL At Source Array ID press SEL OD OI EGO IO 18 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual a Choose the array you wish to convert and press SEL 7 Press the Y button to select Target RAID Level then press SEL a Choose the RAID level you wish to convert to then pres SEL 8 If necessary see table above press the Y button to select Add New Drives then press SEL button a Choose the drive you wish to add then pres SEL 9 Press the Y button three times to select Save Changes then press SEL HOT SPARE DRIVE S A good precaution to protecting your array integrit
43. nder normal use and service This warranty a applies only to products which are new and in cartons on the date of purchase b is not transferable c is valid only when accompanied by a copy of the original purchase invoice This warranty shall not apply to defects resulting from a improper or inadequate maintenance or unauthorized modification s performed by the end user b operation outside the environmental specifications for the product c accident misuse negligence misapplication abuse natural or personal disaster or maintenance by anyone other than a Promise or a Promise authorized service center DISCLAIMER OF OTHER WARRANTIES This warranty covers only parts and labor and excludes coverage on software items as expressly set above Except as expressly set forth above Promise disclaims any warranties expressed or implied by statute or otherwise regarding the product including without limitation any warranties for fitness for any purpose quality merchantability non infringement or otherwise Promise makes no warranty or representation concerning the suitability of any product for use with any other item You assume full responsibility for selecting products and for ensuring that the products selected are compatible and appropriate for use with other goods with which they will be used Promise does not warrant that any product is free from errors or that it will interface without problems with yo
44. nfigure Array menu You will see the following message if all of the drives are already configured What you can do Press SEL Pressing SEL will save the array Press A Does nothing Press V Does nothing Press EXIT Press EXIT to cancel this function and return to the Configure Array menu View DRIVE ASSIGNMENTS The View Drive Assignments mode lists each installed drive by model and identifies its array ID or that it is free if it is not assigned to an array Each drive is displayed on one line Where the values shown are simply examples 3 MAXTOR Asgn In Ary 3 Press or V to move these items on the LCD 4 VENDOR J Free What you can do Press SEL Press A Press v Press EXIT Does nothing Moves the active message line up Moves the active message line down Returns to the Configure Array menu 35 DEFINE ARRAY The Define Array menu defines array parameters for the selected array An array number is selected by using the up down key to select the array number field The SEL key is then used to select array number 1 4 The parameter to be configured RAID Level or Stripe Block size is then selected with up down keys Once the parameter is selected the value is selected with the up down keys and then set by hitting the SEL key If the Exit key is hit instead of the SEL key the parameter value is not modified and the user may then select a different parameter Stripe Block Size setting is not a
45. ntly to the host system It appears to the system as a standard SCSI drive and therefore does not require any special software drivers IN Attention The electronic components within the UltraTrak disk array are sensitive to damage from ESD Electro Static Discharge Appropriate precautions should be observed at all times when handling the array or its subassemblies Features and Benefits Maximum fault tolerance Ensures uninterrupted data availability Supports RAID levels 0 1 3 5 Allows system to be tuned for maximum performance 0 1 30 50 and JBOD RAID 30 and 50 are only supported on the SX8000 and RM8000 to host No special operating system drivers used Maximum performance in Multi Threaded Operating 32 commands Systems indicators maximum up time and manageability interrupting data accessibility to the host system Maintains full fault tolerant integrity by automatically rebuilding the data from a failed drive to an installed hot spare drive Automatic background data Array is quickly back on line with minimal user reconstruction when a drive is intervention replaced Redundant Power Supply Load sharing and uninterrupted operation with failure of 8000 series only one power supply UtraTrak100 SX4000 SX8000 amp RM8000 User Manual GETTING STARTED Caution To prevent serious damage to the UltraTrak be sure that the voltage select switch on the back of the power supply is set to your local voltage see Fi
46. on Technical Support Phone Technical Support 8 30 5 00pm The Netherlands Time If you wish to write us for support 5657 EA Eindhoven The Netherlands Pacific Rim Sales Office E mail Support support promise com tw Fax Technical Support Attention Technical Support Phone Technical Support 9 00 6 00pm Taiwan Time If you wish to write us for support Hsinchu Taiwan China Office E mail Support support china promise com Fax Technical Support Attention Technical Support Phone Technical Support If you wish to write us for support P R China support promise nl 31 0 40 256 94 63 31 0 40 256 94 61 Promise Technology Europe B V Attn Technical Support 1European Business Centre Unit 1 25 Luchthavenweg 81 886 3 578 23 90 886 3 578 23 95 Promise Technology Inc Attn Technical Support 4F No 1 Prosperity 1 Road Science based Industrial Park 86 0 10 6872 3940 86 0 10 6872 3942 9 00 6 00pm China Time Promise Technology China Attn Technical Support Room 3217 No 15 Bai Shi Qiao Road Hai Dian District Beijing 100081 48 UtraTrak100 SX4000 amp SX8000 User s Manual LIMITED WARRANTY Promise Technology Inc Promise warrants that for two 2 years from the time of the delivery of the product to the original end user a the product will conform to Promise s specifications b the product will be free from defects in material and workmanship u
47. oving a drive Press EXIT when done 15 Press SEL to Save Changes 16 Press SEL to create the array or press EXIT to cancel 17 If you pressed SEL to create the array then you should see the message Array has been created 18 Switch the UltraTrak power off wait 5 seconds and switch the power back on You have successfully created an array manually If haven t already done so you need to select a SCSI ID before you can begin us ing the UltraTrak 14 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual GIGABYTE BOUNDARY The Gigabyte Boundary feature is designed for fault tolerant arrays RAID 1 0 1 3 5 30 and 50 in which a drive has failed and the user cannot replace the drive with the same capacity or larger Instead the Gigabyte Boundary feature permits the installation of a replacement drive that is slightly smaller within 1 gigabyte than the remaining working drive for example a 20 5GB drive would be rounded down to 20GB This can be helpful in the event that a drive fails and an exact replacement model is no longer available Without this feature enabled UltraTrak will NOT permit the use of a replacement drive that is slightly smaller than the remaining working drive For the Gigabyte Boundary feature to work the Gigabyte Boundary feature must be set to ON when the original array is created When enabled the Gigabyte Boundary feature rounds the drive capacity of all drives to the common whole GB drive
48. p RM8000 User Manual Configuration Configure Array Auto Array Setup View Drive Assignment Define Array Delete Array Expand Array RAID Conversion Advanced Feature Configure Cache Write Cache Read Ahead Cache Flush Frequency Configure SCSI Mode SCSI ID See page 39 SCSI Terminator CONFIGURATION MENU You enter the Configuration mode after entering the correct password In Configuration mode you may view the status of the UltraTrak system and configure both UltraTrak hardware and arrays The main configuration menu allows the user to select the following menus Configure SCSI What you can do Press A or v to move these items on the LCD Press SEL Selects one of the following active functions Configure Array Moves the display to the Configure Array menu Configure Cache Moves the display to the Configure Cache menu Configure SCSI Moves the display to the Configure SCSI menu Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the Idle mode 29 View Status View Controller Info Memory Size Hardware Rev Firmware Rev View Cache Stats Cache Memory Size Cache Block Size Cache Read Hit Cache Write Hit View Array Information Array x Size CHS Map RAID x Status See page 23 Temp1 See page 22 See page 22 See page 23 Temp4 Fan 1 Status Fa
49. pand an existing array by adding one or more free disk drives to the array using the Expand Array function Do the following steps to expand an array if a free disk drive is already installed then begin at Step 4 otherwise begin at Step 1 1 Ensure that the UltraTrak power is off 2 Install the disk drives into the UltraTrak and lock the Drive Carrier lever 3 Switch the power on and wait about one minute for the UltraTrak to initialize 17 Press the SEL button on the front panel Press Y button once to select Configuration then press SEL Enter the password at the prompt see Enter Password on page 10 At Configure Array press SEL Press V button a few times to select Expand Array then press SEL At Source Array ID press SEL a Choose the array you wish to expand and press SEL O02 o OV ee 10 Press the button to select Add New Drives then press SEL a Choose the drive you wish to add then pres SEL 11 Press the button twice to select Save Changes then press SEL RAID CONVERSION Existing arrays can be converted to a different RAID level of equal or greater capacity to add flexibility redundancy or for tuning an array for a different storage application UltraTrak supports the following conversions From To Comments _ _ _ _ _ RAID 5 RAID 3 Retains the same capacity but allows parity to be written to only one drive RAID 5 RAID 0 Increases the capacity and performa
50. ress EXIT Returns to the Define Array menu SAVE CHANGES Menu What you can do Press SEL Pressing SEL will create the array Press A Does nothing Press V Does nothing Press EXIT Press EXIT to cancel this function and return to the Configure Array menu Apbb REmoveE DRIVES The Add Remove Drives menu assigns and removes drives from arrays All free drives are displayed as one drive per line format The SEL key toggles the drive between free and assigned Assigned drives are designated by the word Assigned and free drives are designated by the word Free Where the values shown are simply examples 3 MAXTOR Free Press or V to move these items on the LCD 4 IBM Free What you can do Press SEL Toggles the selected drive between Free and Assigned Press A Moves the active message line up Press V Moves the active message line down Press EXIT Returns to the Define Array menu 237s DELETE ARRAY The Delete Array menu allows the user to select an array and delete the configuration information for that array This will also free any drives that have been assigned to that array Only existing Array IDs are Displayed Array ID 3 Press or v to move these items on the LCD Array ID 4 What you can do Press SEL Displays a Delete Array confirmation message Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Retu
51. rns to the Configure Array menu EXPAND ARRAY The Expand Array menu allows the user to add free drives to an existing array thus increasing the s torage capacity of the array Save Changes Press or V to move these items on the LCD What you can do Press SEL Selects one of the following active functions Source Array ID Moves the display to the Source Array ID menu Add New Drives Moves the display to the Add New Drives menu Save Changes Moves the display to the Save Changes menu Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the Configure Array menu 38 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual RAID CONVERSION The RAID Conversion menu allows the user to covert an exist array to a different RAID level Add New Drives Press or V to move these items on the LCD Save Changes What you can do Press SEL Selects one of the following active functions Source Array ID Moves the display to the Source Array ID menu Target RAID Level Moves the display to the Target RAID Level menu Add New Drives Moves the display to the Add New Drives menu Save Changes Moves the display to the Save Changes menu Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the Configure Array menu Source Array ID
52. s However they will run at Ultra ATA 100 speed Q Can ladd a drive to an UltraTrak RAID array via hot swap and dynamically adjust the array size configuration A No The UltraTrak does not support dynamically adjustable RAID size configurations Q Can litake a set of drives that make up an array created on one UltraTrak and move it to another UltraTrak A Yes All UltraTrak s read the arrays the same way Once the drives are all connected you must restart the system for it to recognize the newly inserted array configuration Q Can take a drive used in an UltraTrak array and access it directly with a different controller such as the one integrated on the motherboard A Yes but only under certain configurations The following array configurations will allow the drive s to be accessed individually on another controller mirror RAID 1 or single drive striped RAID 0 Multiple drives striped will not work Q How can lbe sure that write back cache has flushed before I reboot after partitioning and formatting an array A A cache flush is always triggered immediately following any write from the int 13h BIOS This level of array support is what FDISK and FORMAT use to access the drive from MSDOS With no delay in the write operation there is no cached data waiting to be written If you are running from Windows NT 2000 or other operating systems as usual make sure to shut down Windows properly so that the operating syste
53. s device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Note A Only digital device equipment CERTIFIED CLASS B should be attached to this equipment and that must have shielded cables Table of Contents Table of CONO gt Pe oS E a iii INMOGUCHOM nsns A ce elie TANS 1 Architectural DesSGriptiON asnon EEA R E aa 1 Getting Startede ireann eE E acc evi rained Unpack Ultra Trak eeeseseeeeeeeeseeeeeeeeeeeeseneeeeeeatenes Mount UtraTrak RM8000 in Rack ee eeeeeeeees Install Hard Drives ccccceceeceseeeseeeeeeeeeeeeeeeeeeeeeees Connecting the SCSI Cables SCSI Cable Connection and Termination Enable or Disable SCSI Terminator Daisy Chaining Multiple Arrays sseeeeeeeee Daisy Chaining with Other SCSI Devices Connect Power Cable and Switch Power On Main Power Switch ivsescccciscscsecdecrsccs casesias ccs eenedi cee ssadstesedicbscestevscscestetesneestsvecs vdenseteees Enter or Change the PaSSWwor ccsssssscssssssscecessseeesesseseeseaseeeeacasaceeaeaeaeecacataceeaeataneeee Enter PassWord Change Password cscssscscesseeseeeeeeeeeeteeeeeteteteeees Reset to Default PaSSWOIGC seeeseteeeeeteteeeeee ASSIQN A SCSI ID eeir Configure the UltraT ak cece How to Automatically Create an Array How to Manually Create an Array eeseseeee Gigabyte BOUNCALY
54. see Figure 11 for the SX8000 and RM8000 Caution To prevent serious damage to the UltraTrak be sure that the voltage select switch on the back of the power supply is set to your local voltage MAIN POWER SWITCH The power switch is located on the back of cabinet Switch the UltraTrak power on by pressing the portion of this switch marked I Switch the power off by pressing the portion of this switch marked O ENTER OR CHANGE THE PASSWORD You are prompted for a password each time you access the UltraTrak Configuration Mode A password consists of four digits The default password is 0000 ENTER PASSWORD You are prompted to enter the correct password each time you access the UltraTrak Configuration mode The active password digit is marked by an underscore Password entry begins with the left most digit You must enter the proper value before proceeding to the next digit You change the value of the active password digit by pressing either the Y button or the A button The Y button increments the digit downward as 0 9 8 7 The A button increments the digit upward as 0 1 2 3 Press the SEL button to proceed to the next digit or to submit the password if you have just entered the last digit You are given access to the Configuration menu if you entered the password correctly CHANGE PASSWORD You may change the password by doing the following procedure 1 From the Idle mode display use the Y butto
55. t two or more drives in the array have failed For a RAID 0 array at least one drive has failed The user should identify and replace the failed drives e No array is An array has not been defined The user should define defined an array for the UltraTrak to be functional The second line of the Idle mode menu can also provides the following error information e Fan Error Fan speed is lt 2000RPM or gt 5500RPM e Array Rebuilding xx At least one array is rebuilding e Array Synchronizing xx Atleast one array is synchronizing pz Initial Mode View Status View Controller Info View Cache Stats View Array Information View Enclosure Configuration Configure Array Configure Cache Configure SCSI Change Password INITIAL MODE MENU You may select one of the following functions from the Initial mode menu See page 25 See page 24 See page 8 Change Password Press or V to move these items on the LCD What you can do Press SEL Selects one of the following active functions View Status Moves the display to the View Status menu Configuration Moves the display to the Please Enter Password menu and then to the Configure Array menu Change Password Moves the display to the Change Password menu Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by Press EXIT Returns to the Idle mode 28 UtraTrak100 SX4000 SX8000 am
56. ticular purpose The published information in the manual is subject to change without notice Promise Technology reserves the right to make changes in the product design layout and driver revisions without notification to its users RADIO FREQUENCY INTERFERENCE STATEMENT This equipment has been tested and found to comply with the limits for a Class B 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 may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television 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 e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult Promise Technology Inc or an experienced radio TV technician for help This device complies with Part 5 of the FCC Rules Operation is subject to the following conditions 1 Thi
57. tioned parts or replace the entire unit with a new or reconditioned unit In the event of a replacement the replacement unit will be under warranty for the remainder of the original warranty term from purchase date or 30 days whichever is longer Promise will pay for standard return shipping charges only You will be required to pay for any additional shipping options such as express shipping YOUR RESPONSIBILITIES You are responsible for determining whether the product is appropriate for your use and will interface with your equipment without malfunction or damage You are also responsible for backing up your data before installing any product and for regularly backing up your data after installing the product Promise is not liable for any damage to equipment or data loss resulting from the use of any product SSI UtraTrak100 SX4000 amp SX8000 User s Manual APPENDIX A TECHNOLOGY BACKGROUND INTRODUCTION TO RAID RAID Redundant Array of Independent Disks allows multiple hard drives to be combined together to form one large logical drive or array As far as the operating system is concerned the array represents a single storage device and treats it as such The RAID software and or controller handles all of the individual drives on its own The benefits of a RAID can include higher data transfer rates for increased server performance increased overall storage capacity for a single drive designation such as C D E etc
58. to attach the array to the SCSI chain Attach each cable to the individual units to be connected on the SCSI bus Ensure that each device has a unique SCSI ID and that only the first and last devices are terminated Enable the internal SCS Terminator on the last LiltraTrak VE Ba Ey Ke F Er ome SZ 7 ee sq Computer or UltraTrak SX4000 UltraTrak SX4000 UltraTrak SX4000 Workstation Figure 5 Daisy Chaining Several UltraTraks Together DAISY CHAINING WITH OTHER SCSI DEVICES This procedure is essentially the same as the procedure outlined above for multiple arrays Refer to the manual associated with the other device or devices for additional information that may be pertinent to that unit Ensure that each device has a unique SCSI ID and that only the first and last devices are terminated See SCSI Cable Connection and Termination on page 8 Terminator Another SCSI Device Computer or UltraTrak SX4000 UltraTrak SX4000 Workstation Figure 6 Daisy Chaining UltraTrak with Other SCSI Devices CONNECT POWER CABLE AND SWITCH POWER ON The UltraTrak SX4000 disk array includes a single power supply The UltraTrak SX8000 and RM8000 includes two replaceable power supply modules Both systems will operate on either 115 volts AC or 230 volts AC Ensure that the switch on the back of each power supply is set to your local voltage See Figure 4 for the SX4000
59. to proceed d When prompted enter the file name for the binary file such as txbxx bin where xxis the version number and press Enter e If prompted choose the model number of your UltraTrak f Press 4 to Exit when the upload is finished g Remove the diskette and mark it as your firmware back up copy 63 9 Switch off the UltraTrak power Disconnect the Null Modem Cable remove the diskette and power off the computer Allow about a few seconds before switching the UltraTrak power back on The firmware upgrade is complete UtraTrak100 SX4000 amp SX8000 User s Manual APPENDIX D INSTRUCTIONS FOR REPLACING THE CONTROLLER CARD This document explains how to access remove and install the UltraTrak controller board The controller board is accessible by opening the UltraTrak cabinet The controller board is located on top Switch the UltraTrak power off and remove the power cord before servicing the controller board 1 2 3 4 REMOVE THE CONTROLLER BOARD Use the following instructions to remove the controller board Attention The electronic components within the UltraTrak disk array are sensitive to damage from ESD Electro Static Discharge Appropriate precautions should be observed at all times when handling the array or its subassemblies Unplug both controller board cables With your fingers on the Slide Grip slide the board toward the front of the cabinet Remove the seven mounting scre
60. tures and choose Wipe Out Disk Where the values shown are simply examples 3 MAXTOR Asng In Ary 3 Press or V to move these items on the LCD 4 IBM Asng In Ary 4 i eee What you can do Press SEL Displays a Wipe out diskconfirmation message Press A Moves the active message line up Active is marked by Press v Press EXIT Returns to the Advance Feature menu Caution The Wipe Out Disk option will delete all data on the drive that is selected Moves the active message line down Active is marked by SYNCHRONIZE ARRAY The Synchronize Array menu allows the user to synchronize the data on each drive Synchronization is a maintenance procedure for fault tolerant arrays RAID 1 0 1 3 5 30 and 50 to maintain data consistency on all drives To synchronize the array go to the Configuration menu and select Configure Array then select Advance Features and choose Synchronize Array Only existing Array IDs are Displayed Press or v to move these items on the LCD What you can do Press SEL Displays a Synchronize Array confirmation message Press A Moves the active message line up Active is marked by Press v Press EXIT Returns to the Advance Feature menu Note A Promise Technology suggests synchronizing an array once a month Moves the active message line down Active is marked by SANE UtraTrak100 SX4000 SX8000 amp RM8000 User Manual Synchronization is a preventative maintenance m
61. ur computer system It is your responsibility to back up or otherwise save important data before installing any product and continue to back up your important data regularly Promise s sole responsibility with respect to any product is to do one of the following a replace the product with a conforming unit of the same or superior product b repair the product c recover the product and refund the purchase price for the product 49 Promise shall not be liable for the cost of procuring substitute goods services lost profits unrealized savings equipment damage costs of recovering reprogramming or reproducing of programs or data stored in or used with the products or for any other general special consequential indirect incidental or punitive damages whether in contract tort or otherwise notwithstanding the failure of the essential purpose of the foregoing remedy and regardless of whether Promise has been advised of the possibility of such damages Promise is not an insurer If you desire insurance against such damage you must obtain insurance from another party Some states do not allow the exclusion or limitation of incidental or consequential damages for consumer products so the above limitation may not apply to you This warranty gives specific legal rights and you may also have other rights that vary from state to state This limited warranty is governed by the State of California 50 UtraTrak100 SX40
62. vailable in RAID 1 Gigabyte Boundary ON Press or V to move these items on the LCD Add Remove Drives Initialization ON Save Changes What you can do Press SEL Selects one of the following active functions RAID Level Moves the display to the RAID Level menu Stripe Block Size Moves the display to the Stripe Block Size menu Gigabyte Boundary ON Toggles between ON and OFF Add Remove Drives Moves the display to the Add Remove Drives menu Initialization ON Toggles between ON and OFF Save Changes Moves the display to the Save Changes menu Press A Moves the active message line up Active is marked by Press v Moves the active message line down Active is marked by Press EXIT Returns to the Configure Array menu You will see the following message if the array is already defined What you can do Press SEL Pressing SEL will save the array Press A Does nothing Press V Does nothing Press EXIT Press EXIT to cancel this function and return to the Configure Array menu 36 UtraTrak100 SX4000 SX8000 amp RM8000 User Manual STRIPE BLocK SIZE The Stripe Block Size menu allows you to select a Stripe Block Size between 4KB and 64KB ie Press or V to move these items on the LCD 64KB What you can do Press SEL Selects one of the active Stripe Block Size Press A Moves the active message line up Active is marked by Press V Moves the active message line down Active is marked by P
63. ws from the controller board Lift the board from the cabinet INSTALL THE CONTROLLER BOARD Use the following instruction to install a controller board 1 2 3 4 Slide the controller board mounting bracket toward the front of the cabinet Set the controller board on to the controller board mounting bracket Insert and tighten the seven mounting screws from the controller board With your fingers on the Slide Grip slide the board toward the back of the cabinet Plug in the controller board cables Slide Grip Rem eve Ipgtall Figure 20 Location of UltraTrak100 Controller Board 65
64. y in the event of drive failure is maintaining a hot spare drive A hot spare is a drive that is connected to the array system but is not assigned as a member of the array In the event of the failure of a drive within a functioning fault tolerant array the hot spare is activated as a member of the array The spare drive effectively takes the place of the failed drive and the RAID system immediately begins to rebuild data on the drive When the rebuild is complete the array is returned to fault tolerant status Once the failed drive is replaced the new drive is automatically recognized as a hot spare in the event of a subsequent drive fault PARTITION AND FORMAT THE ARRAY Like any other type of fixed disk media in your system a RAID array must also be partitioned and formatted before use Use the same method of partitioning and formatting on an array as you would any other fixed disk Depending on the operating system you use there may or may not be various capacity limitations applicable for the different types of partitions 19 MAINTENANCE DRIVE STATUS INDICATORS As shown in the figure below each drive has three status LEDs Figure 8 Location of Drive Status Indicators SX4000 shown MEANING OF STATUS INDICATORS inaicaior Galen ening 7 Off No disk drive power power off or no disk installed cee Data is being rebuilt to this drive CRITICAL amp OFFLINE ARRAYS A fault tolerant array goes critical w

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