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NEC IS015-9E User's Manual

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1. Switch Target ID Bus Disk Array Figure 4 4 Relations between System Configuration and HBT 113 Chapter 4 Functions of ReplicationControl eee ssssnnanana See The iSMvollist command corresponds to the system information on the logical disk of the disk array that can be recognized from a business server and saves necessary volume information in the volume list Only the volumes that have already been registered in the volume list can be specified when data replication or snapshot operation is performed Therefore you need to execute the iSMvollist command to create the volume list beforehand When you have added or deleted disk arrays to or from the system or built or cancelled logical disks you must update the volume list to reflect the information Ifthe volume list is not updated inconsistency may occur in data replication or snapshot operation or disk operations such as flushing or unmounting Windows volumes Main Options You can specify one of the following options in the iSMvollist command i Create update the volume list cr Scans devices connected to the system and creates or updates the volume list i Displays the volume list You can select one of the following options d option Lists disk array information dl option Displays information only associated with specified disk arrays sorted by using logical disk number as the key Ifa specific logical disk name is spe
2. ccceeeceeeeeees 36 disk array operation Comman d ccseeeeeeeeeeeees 178 disk array OPeratiONS ccccccceesesseececeeeeeeeeeeeeeeeeeeas 178 disk array properties cece c ccc ce ce eseeeeceeeeeesaeeeeeeeeeeeeas 97 disk oroup TATIE dene a eee eee a ee 111 disk operation COMMANGA ccc eeeccccce cess eeeeeeeeeeeeees 181 disk OPeTatiONS cccececceeeeeccccceceeseeeeeeeeeeseeeeeeeeeeeeas 181 disk SC AMMO oeann saeco anneancreseese 104 106 disk signature operation command ccccceeeeees 187 disk signature operations cccceeeeecceceeeeeeeeeeeeeeeees 187 displaying information on the replication function 178 displaying logical disk information cccceeee 174 displaying property information volume list 132 CV T CE urairi 111 113 CI scree EEE sede inate E A 111 UEN e E E E E eee eseedeeetedee ds 8 dynamic replication volume cccccceeeeeeeeeeeeeeeeeeeeees 8 DynamicDataReplication cc eeecccccceeseseeeeeees 1 7 45 DynamicDataReplication Ver2 ccccccseeeeeeeees 10 11 E environment SeN senai A 95 ST IS CCC ON paenan stmeainanbaen snameneesepstearancters 24 F falute SMa ALON sacras EE 16 21 ell e EE sensusedadaaakescon antes E EEN 112 file system buffer flush cc eeccccceceeeeeeees 104 106 filesystem TUS ics ced cnsdensoncnmseosdasersdcnsaeatearunssoncceanscens 181 file system flush command c
3. Figure 3 13 shows an example of the Replicate screen Replicate x Cannot be selected Logical Disk Name Number my D Unexecutahle WE BV 4G 026 OF03h Star Selected Separate AS AMA BC Mil O305h Shor Separate expidwd 4100 7 O105h Stor 1 Separate rpl30b 7 030bh Stor Not selected E i1 fe Summary i Details Copy Conditions 111 Range fe Only Difference C Ana AL iv Copy Mode te Synchronous i Seni synchronous i Background Copy V EV Status f Not Ready Bead Only Default Choose pairis which you want to execute from list then click Execute button It is possible that multiple pairs are chosen and executed Execute Close Help Figure 3 13 Example of Replicate Screen From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot be selected i Selected Volume List Displays the list of the pair MV RV information selected in the Replication Information screen Volumes whose Execution Result is Unexecutable cannot be selected because they do not satisfy the execution conditions 50 Chapter 3 Replication Management For the Unexecutable volumes do the following by referring to the Unexecutable Information Have Unpaired Execute it for a volume with the pair setting Replicated Execute it for a volume in the Separate st
4. Update Display Information 4 5 3 8 Updating Display Information Update Display Information F5 e Operation menu Operation Help Define Control Volume Define Control volume 4 5 3 9 Defining Control Volume e Help menu Help List Display Screen Help Fi List Display Screen Help Displays information about the Volume List About Display screen About Displays information about the version 126 Chapter 4 Functions of ReplicationControl Volume List This section describes the procedures for starting and terminating the Volume List Display function Operation Procedure Starting Volume List Display screen 1 Select Start of Windows Programs All Programs for Windows Server 2003 Storage Manager Volume List gt 2 The Volume List Display screen appears Fl olume List Display File View Operation Help EEL Disk Array Subsystem ALL Volume List Display Bi Es Drive Letber Path Marne Yolurie Definition On n oe aa ee O45 Find 0 DAS Find 0 NE NCNEE_ AN0000004C 200000004C A00000004C 1258 SHREK 1258 SHREK S2800 002 1 52600 0021 S2300 0244 S2300 0244 S2300 0244 S2300 0244 52100 1258 52100 1256 disk5 disk G We Wwolurmne H VW Wwolurrie Paired Linked Logical Disk Information List ciasehsicatson Jim 2p mee Disk Array OO08h ryw 0l RPL_200_011F 200000004C 200000004
5. i The target MV and RV have been paired ii The target MV or RV has been registered in the volume list iii The volume list is not being created or updated iv RV has been unmounted from the system v The disk array that stores the specified MV and RV is not in the Freeze state vi The Activity State of the target pair is Separate vii The pair of the specified MV and the paired RV is not in the Restore state viii When the specified MV is also used as the base volume BV of the snapshot function restoration is not being executed from the snapshot volume SV 143 Chapter 4 Functions of ReplicationControl ix The Activity State of the pair of the specified MV and the paired upper MV is not in the Restore state x The Activity State of the pair of the specified RV and the paired lower RV is not in the Restore state xi The Semi synchronous Copy mode cannot be specified for paired volumes set in the same disk array The Semi synchronous Copy mode can be specified only for paired volumes set in different disk arrays xii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed Windows only xiii The iSM dedicated special file is not being created HP UX version UNIX only xiv When an LVM volume group or a VxVM disk group is specified the target volume group or disk group must be active UNIX only xv When specifying the combination of an LVM volume group or a VxVM disk
6. 4 6 6 Replication State Display Command To display the replication state the 1iSMrc_ query command is used As the target volume MV and RV to be specified must be paired beforehand In addition MV and RV to be specified must be registered in the volume list created by iSMvollist Main Options The iSMre_ query command enables the specification of the following options 1 Specifying paired volumes Specify MV and RV volumes e Specify MV mv volume mvflg mv flg Specifies the volume and volume type of MV e Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV For information about volume types refer to 4 3 Volume Types The target volumes MV and or RV can be specified in any of the combinations below e MV and RV Waits for a specified pair of volumes to enter a target state e MV only Waits for all the pairs set with MV to enter a target state e RV only Same operation as when MV and RV are specified Displayed Information The iSMre_ query command displays the following information On the Windows system Displayed information MV Disk No disk_number LD Name Id name Type type Volume Name volume_name Path path RV Disk No disk_number LD Name Id name Type type Volume Name volume_name Path path Activity State activity 165 Chapter 4 Functions of ReplicationControl Synchronous State Copy Control State lt state gt Start Time lt state gt End Time Separa
7. Execution message Separating End message Separating Normal End YYYY MM DD hh mm ss MV disk_number Id name type volume_name path RV disk_number Id_ name type volume_name path Description The execution message and the end message appear only when wait has been specified to wait for the Separated state If you do not want the execution message to appear change the RPL_WAITMSG setting in the replication operation option setting file Information about the replication operation option setting file refer to the Data Replication Command Reference YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second disk number Physical disk number ld name Logical disk name type OS type volume name Mount point volume name path Drive letter or path name mounted on the NTFS volume folder accessed by users Separating The character is dynamically updated until Separate is completed 148 Chapter 4 Functions of ReplicationControl Seo SSE ee On the UNIX system Start message Separate Start YYYY MM DD hh mm ss MV special_ file name Id_ name type RV special_ file name ld name type Execution message Separating End message Separate Normal End YYYY MM DD hh mm ss MV special_ file name Id_ name type RV special_ file name ld name type Description The execution message and the end message appear only when wait has been specified to wait for the Separated state
8. Action Check the Access Control state of the disk array and check whether the necessary logical disk can be accessed from the server To change the control volume select another logical disk and update the control volume in Selected Volume List When the control volume is not needed anymore delete the control volume from Selected Volume List 2 Register change or delete a control volume A control volume is used to issue a control I O to a disk array from a server A logical disk can be selected for each disk array A Do not select RV or a link volume LV with the snapshot as a control volume because they are put in the Not Ready state during operation e Register or change a control volume To register or change a control volume select the logical disk to be used as a control volume from Candidate Volume List and click the Add or Update button 135 Chapter 4 Functions of ReplicationControl Define Control Yolume Selected Volume List Disk No LUN LON OSType LD Name DiskAray Classification 9 disk3 Osth OO3th EUN000004CFO43SE00SF tom_E i E ni eee AQO000004CFFO49E 0046 tom_E AQO000004C7FO49E0047 tom_E AQO000004C7FO49E0049 tom_E tem tom_E temUz tom_E tem tom_E smile tom_E Candidate W olume List disk 30 O00h 0000h Wh sAn Client 0000 52100 12588 Cancel Help Figure 4 19 Register Control Volume Define Control olume Ea Selected Volu
9. MV 0008h DB_CTL_MV Tokyo _Customer_DataBase I Volume cce8986b 4d8 7 1 1d8 92a3 806d61 72696f disk6 005h 0009h DB ARCHIVE _RV Tokyo Customer_DataBase RV MV 0009h DB_ ARCHIVE MV Tokyo _Customer_DataBase M Volume cce8986f 4d87 1 1d8 92a3 806d61 72696f disk10 000h 0004h LDO004 _MV S2800 MV RV 0011h LD0011_RV1 S2800 RV 0012h LD0012_ RV2 2800 RV 0013h LD0013_ RV3 S2800 Figure 4 12 Output Example of CSV File This file outputs information displayed on the Volume List Display screen by separating each piece of information by commas The information for a volume is output as information for a line The information on the logical disks displayed in the Paired Linked Logical Disk Information List is output in the following format Information items on multiple logical disks are delimited and linked with slashes and output Classification LDN LDName DiskArray Classification LDN LDName DiskArray Classification Classification LDN Logical disk number LDName Logical disk name DiskArray Disk array name 131 Chapter 4 Functions of ReplicationControl Displaying P Volume List y Information of To check property information of the volume list select File Properties on the Volume List Display screen Operation Procedure 1 To display property information select File Properties on the Volume List Display screen 2 To return to the
10. Management RV Monitoring Change the disk array of RV to the Monitored state and execute it Suspended again MV Force Unpaired Perform Forced Unpair for RV RV Force Unpaired Perform Forced Unpair for MV All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Have been registered to Execute it for a pair that is not registered in the AT group AT group i Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog iii RV Status Specifies the operations for a write request from the host R W Permit Read and write can be performed for a volume from the host This cannot be executed in Replicate Restore or Separate execution Refer to Figure 3 28 Execution Conditions of Change to Background Copy Not Ready Operations for the volume cannot be performed from the host Read Only For a volume only read from the host can be performed Care should be taken to specify Read Only Refer to 2 6 RV Access Restriction Not Available For a volume access from the host is disabled 72 Chapter 3 Replication Management When you click the Execute button the following message is displayed iso 02600 Will you execute Figure 3 30 Confirmation Screen When it is performed for a volume in Rep
11. ceeeeeeeeeeececcceceaseeeececeeeaseeeeeeeeeeees 24 operalon YES ena E 105 operations linked with 1SM ce eeeccccccceseeseeeeeeees 109 P j T era E A NEET EE A ET TEE EE 175 POU OVS ane sorio ase 32 Ae UNS EEE EAE OP A E E AT 93 Da DUDOI aene E seen es nn epee eer ene 32 Pair Operation COMMAMNAS ccccccecceessseeeeeeeeeeeeeeees 172 Parse DE eiir ne ee ene ne ee ene ee 44 175 pair setting and UNPAIL 0 0 0 cece cc cece ee eeeeeeeeees 104 106 pair setting and unpair operations cccceeeeeeeees 172 pair setting and UNPAIFING cece eeeeeeecceeeeeeeeeees 175 pair unpair command ccc eeeecccececeeeeeeeeeeeeeeeeeees 175 paired volume state display cccccesseseeeeees 104 106 palh BY a 0 Aeon eee E eee Asem 180 PAU A E ee seeped ceases T A E E 37 palh SEAGIG esirinda a iii 180 a EE E EEE A een AN 113 port NUME eccone ee 99 p mary Volume oecserscunenien 8 property information of volume list 115 117 120 122 IY spe EE ENETEIA ENEE T SET 8 R IA D i PEE E N A A E l TS AON k AEE E EAE E A nsec 20 KELTO AIG E T EEE T 20 remote replication volume cccecccccceseseeeeeeeeeeseeeeeees 8 RemoteDataReplication ccccccecccececeseeseeeeeees 1 7 45 RemoteDataReplication Ver2 cccccceeececeeceeeee eens 11 PEDIC ALG sisean 10 50 104 106 140 t plicate command sesanan aie 140 TP CA Sil Eeer 16 Replicile SiE ooe e 13 replication information scre
12. 2 1 Volume Classification To create replication volumes using the Data Replication function you must set the relation between the original volume and the target volume replication volume first In replication control the original volume is called MV Master Volume and replication volume is called RV Replication Volume Furthermore MV and RV are set as a pair In a disk array to which the Data Replication function is installed the volume classification in the disk array 1s categorized into the following three types Figure 2 1 describes sample volume classification e Isolated Volume IV Volume with no pair setting By specifying the pair setting to IV you can set it to MV or RV e Master Volume MV Volume with the pair setting The original volume in the pair Normally volumes used in operation are set as MVs To distinguish the uppermost MV from other MVs when multiple pairs are set in series hierarchically it is called the Primary Volume PV e Replication Volume RV Volume with the pair setting The target volume in the pair Normally volumes used as backup or in test operation are set as RVs The pair setting can be between the volumes within the same disk array or between the volumes in different disk arrays To distinguish them the former is called a Dynamic Replication Volume dRV and the latter is called a Remote Replication Volume rRV Chapter 2 Data Replication Disk Array A Disk Array B Volume
13. 4 6 1 Replicate Command For Replicate the iSMrc_replicate command is used By executing the 1iSMrc_replicate command copy from MV to the paired RV starts Before Replicate is performed MV and RV to be specified must be paired beforehand In addition the MV must be registered in the volume list created by iSMvollist If MV and RV are used as file systems the mount of the file systems must be canceled Main Options For the iSMrc replicate command you can specify the following options regarding the Replicate operation 1 Specifying paired volumes Specify MV and RV volumes e Specify MV mv volume mvflg mv flg Specifies the volume and volume type of MV e Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV For information on volume types refer to 4 3 Volume Types On the Windows system when a specific partition drive letter is specified for a volume consisting of multiple partitions all partitions in the volume become operation targets therefore the default setting does not allow the multiple partitions to be operated To perform operations for a volume consisting of multiple partitions you need to change the default setting For information about the replication operation option setting file refer to the Data Replication Command Reference 2 Specifying the copy range cprange By default only the difference area diff of MV and RV is copied You can also instruct
14. Clicking the Cancel button cancels Create Update Volume List and returns to the Volume List Display screen 3 The following message appears when the Volume List has been created updated successfully Create Update Yolume List rT 00006 Execution of Create Update Yolume List was successful Figure 4 9 Confirmation Screen for Create Update Volume List 4 Clicking the OK button returns to the Volume List Display screen 5 The Volume List Display screen is automatically updated after the Volume List file has been created updated 129 Chapter 4 Functions of ReplicationControl 4 5 3 4 CSV Output of Information List i ae eee ee eee RRR RRR RRR RRR RRR RRR RRR RRR RRR RRR RRR RRR RRR RRR RRR The information displayed on the Volume List Display screen is output as a CSV file and then saved Operation Procedure Select File and then select CSV Output of Information List on the Volume List Display screen The CSV Output of Information List screen appears CS Output of Information List Ei E4 trace File name vollist Save as Ippe esv csv Cancel Figure 4 10 CSV Output of Information List Screen 2 1 Specify the save destination The default save destination is the etc folder in the installation directory 2 Specify the file name The default file name is vollist csv 3 Click the Save button to save the input information When the Cancel button is clicked the scree
15. If the offline option is omitted when the volume to be unmounted is LV it operates in the same way as the offline option is specified When the volume to be unmounted is RV it operates in accordance with the UMOUNT_ RVACC parameter setting of the replication operation option setting file Main Options For the iSMrc umount command the target volume is specified by its drive letter mount point volume name or NTFS folder name The following option can be specified e Forced Unmount force Even when the volume to be unmounted cannot be locked it is unmounted forcibly e Deleting Mount Point offline Deletes the mount point and puts the volume in the state where the volume cannot be mounted automatically In addition even when the volume to be unmounted cannot be locked the volume is unmounted forcibly Displayed Information The iSMrc_umount command displays the following messages when Unmount starts and ends Start message iISMrc_umount Info ISM13221 Resetting drive letter drive volume_name has succeeded Umount Start YYYY MM DD hh mm ss disk_number Id_ name type volume_name path iISMrc_umount Info ISM13221 Resetting drive letter drive volume_name has succeeded 185 Chapter 4 Functions of ReplicationControl Leen ee ee eT End message Umount Normal End YYYY MM DD hh mm ss disk_number Id_ name type volume_name path Description 1SM13221 Resetting drive letter drive volume_name
16. The maximum number of characters is 32 Usage type of the logical disk registered in the AT group ExVolName Name of the logical disk registered in the AT group The maximum number of characters is 24 Example Pair Name List iSM_ Ver 3 2 1 Tue Feb 24 20 42 35 2004 Pair MV DiskArrayName MV OSType MV ExVolName RV DiskArrayName RV OSType RV ExVolName Storage4300 07 WN ora45 Storage4300 10 WN ora25 Storage4300 07 WN ora46 Storage4300 10 WN ora26 Storage4300 07 WN ora47 Storage4300 07 WN ora55 Storage4300 07 WN ora48 Storage4300 07 WN ora56 lt 0000 gt atcreate A TgroupName DiskArray Name ATG4300 Storage4300 07 atadd A TgroupName OSType Ex VolIName ATG4300 WN ora45 ATG4300 WN ora46 94 Chapter 3 Replication Management vironment Setting The interval to obtain disk array information is specified It is the interval to obtain copy progress information in the screen display On the menu bar do the following e Click View and then click Environment Setting Figure 3 50 shows an example of the Environment Setting screen Environment Setting Information Acquisition Interval 5 to 0 sec Te Second s Interval 15 the amount of time from this information acqulsition to the next Cancel Figure 3 50 Example of Environment Setting Screen The interval is the time interval after information is obtained until information is obtained next time To reflect the settings to the
17. ii Replicate Performs Replicate for the selected pair This operation can be performed for a volume in the Fault state iii Restore Performs Restore for the selected pair This operation can be performed for a volume in the Fault state iv Resume Copy Performs Resume Copy for the selected pair This operation can be performed for a volume in the Abnormal suspend state v Forced Separate Performs Forced Separate for the selected pair This operation can be performed for a volume in the Abnormal suspend state 102 Chapter 4 Functions of ReplicationControl Chapter 4 Functions of ReplicationControl This chapter describes how to operate functions of the ReplicationControl that runs on the business server The ReplicationControl functions include the creation and display of the volume list replication operations pair operations and disk operations that are necessary for operating MV s and RV s in the system The description of UNIX in this chapter includes all of the UNIX systems supported by the ReplicationControl such as HP UX Solaris and so on 103 Chapter 4 Functions of ReplicationControl 4 1 Command List Table 4 1 shows the commands of the ReplicationControl For details of each command refer to the Data Replication Command Reference Table 4 1 The List of ReplicationControl Commands mes a Command Name Operation Description Volume List Associates logical disk disk array side
18. iv v Pair Setting x Data Replication Mode O Dynamic Data Replication Inside Disk Array 2 Remote Data Replication Between Disk Arrays MV m RY Disk Array Name 52800 0115 Disk Array Name 7800 0115 Selection Selection Object M ED Select LD Set Name ALL X LD Set Name ALL v Number OS Type Logical Disk Name Number OS Type Logical Disk Name Logical Disk 000Sh 200000004C7F0SA50005 v Logical Disk 0002h 200000004C7FO0SA5S0002 D Capacity GB lore Capacity GB sr Copy operation such as replication becomes available after pairing Execute Close Help Figure 3 9 Example of Pair Setting Screen After the Pair Setting the copy operation such as Replicate Restore etc is available i Data Replication Mode Select the method of setting pairs Dynamic Data Replication within a Disk MV and RV use the volumes in the same Disk Array Array Remote Data Replication between Disk MV and RV use the volumes in different Disk Arrays Arrays ii Disk Array Name On the MV part displays the disk array name with the selected volume On the RV part displays the disk array name for which pair setting of remote data replication can be performed 111 Object To make only the selected volume the object of MV check this default To make all the volumes that can be used as MV the objects uncheck this iv LD Set Name You can narrow down objec
19. Creation Display information with system dependent information iSMvollist server side and displays the associated information iSMrc replicate Starts Copy Replicate from MV to RV Le o i Separate Separate RV from MV in the Synchronous state iSMrc_ separate Replicate or Restore Change Copy Performs Copy Control State change when pee Nange copying data from MV to RV iSMre wait Wait for state Waits for Synchronous State rpl sync E Synchronous State rst sync or Separated state Paired Volume Displays the Copy state of a pair Display iSMrc_Idlist Logical disk Obtains and displays logical disk list information display information Pair Setting and Sets and unpairs paired volumes spe Unpair Site araynt Disk array Displays information on the replication function information display of a disk array iS Mre flush n buffer Flushes the file system cache buffer poo fe Volume Mount Mounts a volume file system Se ag Volume Unmount Unmounts a volume file system Le fag UEA Signature Performs operation regarding the signature of Operation each disk O Targeted Not targeted Notes l On the Windows system operations are allowable only for a user who belongs to the Administrators group 2 On the UNIX system operation authority is given to a super user immediately after the installation The volume list can be created only by the super user other operations however can be pe
20. If you do not want the execution message to appear specify the RPL_WAITMSG environment variable For information about environment variables refer to the Data Replication Command Reference YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second special file name Special file name ld name Logical disk name type OS type Separating The character is dynamically updated until Separate is completed Execution Conditions To perform Separate the following conditions must be satisfied i The target MV and RV are paired ii The target MV or RV has been registered in the volume list 111 The volume list is not being created or updated iv When starting Separate the file system cache used for MV until the instruction is executed must be flushed or placed in unmount state to complete updating to MV v The disk array where the specified MV and RV are stored is not in the Freeze state vi The Synchronous state of the target pair 1s not the Restore execution state vil Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed Windows only viii The iSM dedicated special file is not being created HP UX version UNIX only 149 Chapter 4 Functions of ReplicationControl aT ix When an LVM volume group or a VxVM disk group is specified the target volume group or disk group must be active UNIX only x When specifying the combination
21. Lotan Pt Arey l Besson O40h QO00000407F049E 0040 O41h QO000004C 7FO49E 0041 O44h Ha Sarmes O45h LD O46 O46h UN000004C FO49E 0046 O47h eUNO00004C r Fite O04 04h eUO000004C FO45E 0045 Figure 4 18 Define Control Volume Screen 134 Chapter 4 Functions of ReplicationControl Seo SSS Display items on the Define Control Volume screen are described below i Selected Volume List Lists already registered control volumes CTL Displays a logical disk selected as a control volume ii Candidate Volume List Lists candidates of logical disks that can be registered as a control volume Displays logical disks that can be registered as a control volume When the Define Control Volume screen is started if an error is detected in the saved definition information one of the following icons indicating an error appears Table 4 4 List of Icons Indicating Errors Explanation and Action Explanation The disk array to which the control volume belongs cannot be recognized by the server Action Check the connection state of the server and disk array and make the server recognize the disk array again Check the Access Control state of the disk array and check whether the necessary logical disk can be accessed from the server When the control volume is not needed anymore delete the control volume from Selected Volume List Explanation The logical disk selected as the control volume cannot be recognized
22. The logical disk to be operated does not need to be connected to the server Therefore you do not need to create the volume list Commands to create and display the volume list and commands to manage and operate disks such as to flush mount and unmount a file system are functions to operate volumes of the system directly They are not used for operations linked with the 1SM For details refer to 4 2 2 Operations Linked with iSM 105 Chapter 4 Functions of ReplicationControl Table 4 2 Operation Form Direct Operation of Operation Linked with sic row Revo a S sie change Change Copy Conratsee o o smew Warforme Ooo S o S o iSMrc query Paired Volume State Display O 9 O O iSMre sense Volume List Display O O iSMre pair Pair Setting and Unpair iSMrc mount Volume Mount Si iSMreumount Volume Unmount OP iSMre_signature Signature Operation fJ OP isMre_scan Diskscannins EOP Nottargeted O Available Ifthe control volume is not used the operation is available when a volume on the MV is recognized by the server OS and accessible to the MV 2 Only the volume of the system recognized by the server can be operated 4 2 1 Direct Operation for a Disk Array For direct operation for a disk array you can select one of the following configurations for each server e Direct operation is the most basic operation when the replication operation is performed from a business server The MV
23. The state where the difference between MV and RV is zero is called the state synchronized by Restore or simply the synchronous state Restore execution and the state synchronized by Restore are collectively called the Restore state When Restore protect is executed the updated data of the MV is not reflected into the RV In this case the updated information of the MV is managed as the difference between the MV and RV contents so that the difference can be reflected into the RV when Replicate Restore is executed subsequently When the Synchronous State sync is placed after Restore protect is executed it is automatically changed to the Separated State separated When data of MV is referred to during Restore execution the user can refer to the content of RV immediately after the instruction to start Restore even if the content of RV has not been completely reflected to MV This is done by obtaining data from RV when the area where difference copy from RV to MV has not been completed is accessed in response to a reference request to MV Update to MV Update to MV ieoi a Restore Until the N 7 operation starts difference is zero updating RV Separate State Restore Execution Synchronous State Restore State Figure 2 5 Restore and State Transitions 15 Chapter 2 Data Replication 2 3 4 Activity State and Synchronous State In data replication Replicate Restore and Separate states are called act
24. You can also select All which copies the entire area explicitly Only Difference Copies only the difference of the volumes Copies the entire volume 51 Chapter 3 Replication Management iv Copy Mode You can specify the copy control state in Replicate Execution and the Synchronous state at the same time as Replicate The following copy modes can be specified Synchronous Changes the copy control state to the foreground copy Synchronous mode Semi synchronous Changes the copy control state to the foreground copy Semi synchronous mode This can be specified for pairs in different disk arrays Background Copy Changes the copy control state to the Background Copy state v RV Status Specifies the access restrictions from the host until Replicate is complete Radio Button Description Not Ready Operations for the volume cannot be performed from the host Read Only For the volume only read can be performed from the host Care should be taken to specify Read Only Refer to 2 6 RV Access Restriction When you click the Execute button the following message is displayed 02209 Replication will be executed Is it OK bo change contents of Rv Has RY been un mounted From the host Figure 3 14 Confirmation Screen Execution Conditions To perform Replicate the following conditions must be satisfied i The target MV is recognized by Replication Management as the Replication target d
25. e Restore without RV being updated Restore protect Restores the MV without reflecting the updated data of the MV into the RV After the difference between MV and RV is resolved and Restore is completed Separate is automatically executed The Restore protect function enables you to save the RV data in the state before the restoration The product DynamicDataReplication Ver2 or RemoteDataReplication Ver2 is necessary for using the function 11 Chapter 2 Data Replication 2 3 Replication Operations and State Transitions This section describes the replication operations and state transitions The pair setting is specified and synchronization has been established Difference between MV and RV is being reflected The pair setting is specified but MV and RV are separated Replicate e RV cannot be updated e Updates to MV are reflected to RV e As arule access to RV is not allowed e MV and RV can be N updated E Separate e As arule RV cannot be updated e When Restore update is executed updates to MV are reflected to RV e When Restore protect is executed updates to MV are not reflected to RV e As a rule access to RV is not allowed rst exec Restore e RV cannot be updated tee ee eee ee eee e eee e eee e ees ee eee e eee eee eee ease sete eee eee eee eee eee EEE EEE EEE EOE OEE O EEE E EEE E EEO E EERE EEE
26. iv Not in the Freeze state v Disk array monitored vi The specified MV or RV is not registered in the AT group Target Pair Figure 3 42 Execution Conditions of Forced Unpair 81 Chapter 3 Replication Management 3 3 10 Freeze Defreeze You can freeze or defreeze the Data Replication function of the disk array Operation Procedure Do one of the following to display the Freeze Defreeze screen e Select the disk array in the configuration display area click Operation on the menu bar of the Replication screen point to System Operation and then select Freeze Defreeze e Select the disk array in the configuration display area right click it and then select Freeze Defreeze Figure 3 43 shows an example of the Freeze Defreeze screen Freeze Defreeze Disk Array Name Storages4300 1035 Freeze Defreeze Execute Freeze De treece AN Freeze Invalidate Replication Function Defreeze i Validate Beplication Function Figure 3 43 Example of Freeze Defreeze Screen i Freeze Defreeze Execute Freezes invalidates the Data Replication function of the disk array Defreezes validates the Data Replication function of the disk array When you click the Execute button the following message is displayed 02211 Freezing will be executed Is it OK that the replication Function will become invalid Figure 3 44 Confirmation Screen 82 Chapter 3 Replication M
27. reference and update are disabled vi Ifthe offline option is specified or if the volume to be unmounted is LV only one mount point drive letter or NTFS folder name needs to be set in the target volume The volume to which no mount point is set or multiple mount points are set cannot be unmounted 186 Chapter 4 Functions of ReplicationControl 4 9 4 Disk Signature Operation Command For the disk signature operations the iSMrc_ signature command is used A disk signature is system information used for identifying the disk on the Windows system On the Windows system two disks with the same signature cannot be used in the same system For example Data replication automatically avoids the same disk signature when MV and RV are synchronized If a failure occurs during replication operations a conflict may occur in the disk signatures of MV and RV In such a case you can use the Disk Signature operation command to restore them To perform the disk signature operation you can specify the disk number to operate in units of disks or you can operate all disks as targets Main Options For the iSMrc_ signature command you can specify the following options regarding Disk Signature operation e Saving signature read Saves the disk signature recognized by the Windows system Signatures are recorded in the signature map file managed by the iSMrc_ signature command e Writing signature set Restores the signature saved in the
28. the following benefits e The system down time during data backup is largely reduced Lowered access performance to the business database during data backup in system operation can be prevented e A test environment using the actual business data can be built more easily e Processing becomes more efficient due to parallel processing of data update tasks and data reference tasks In this way Data Replication makes system construction and system management easier and more effective The following sections illustrate some applications of Data Replication 1 2 1 Backup This section describes an application for backup using replication volumes Backing Up from the Replication Volume to Magnetic Tape Media In this method a replication volume of the master volume is backed up to the magnetic tape In this case operations are suspended only for the time it takes to separate replication volumes from the master volume Therefore the suspension time can be substantially reduced Because backup is done from the replication volume it does not affect the master volume Backup Server Tape R eplication RV Figure 1 2 Backup from Replication Volume Chapter 1 Data Replication Overview The procedure for backup from a replication volume is described below 1 During operation the master volume MV and replication volume RV are connected 2 Suspend the production task and sep
29. A1 A2 B1 IV Volume A3 MV PV of the pair A3 A4 Volume A4 RV dRV of the pair A3 A4 and MV of the pair A4 B2 Volume B2 RV RV of the pair A4 B2 Figure 2 1 Example of Volume Classification Chapter 2 Data Replication 2 2 Replication Operations The replication operations include Replicate that replicates data from MV to RV Separate that separates between MV and RV and Restore that replicates data from RV to MV 2 2 1 Replicate This operation copies data from MV to RV It is performed to replicate the latest data to the replication volume used in a test environment or search tasks When Replicate is executed the data in MV is copied to RV In addition any update made to MV after Replicate is reflected to RV 2 2 2 Separate This operation separates MV and RV It is performed to suspend data replication between MV and RV to use RV in a test environment or search tasks When Separate is started all the difference between the MV and RV contents at the point of starting Separate is reflected into the RV and then data replication is suspended and the RV is separated The updates made to MV after starting Separate are not reflected to RV and stored in the disk array as update differences When executing Separate you can determine when to make the RV available by choosing either of the following e Separate for making RV available after completion of separation Separate completion Reflects all the difference
30. BY Use Bestriction 111 EY Use Start Time Separate End Separate Start iv Separated BY Status if R W Permit Bead Only Default Choose pair s which you want to execute from list then click Execute button It is possible that multiple pairs are chosen and executed Execute Close Help Figure 3 16 Example of Separate Screen From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot be selected 54 Chapter 3 Replication Management i Selected Volume List Displays the list of the pair MV RV information selected in the Replication Information screen Volumes whose Execution Result is Unexecutable cannot be selected because they do not satisfy the execution conditions For the Unexecutable volumes do the following by referring to the Unexecutable Information Have Unpaired Execute it for a volume with a volume of the Synchronous state Separated Execute it for a volume in the Synchronous state Restoring Execute it again when Restored is completed Suspend State Execute it again in the Synchronous state after copy is resumed Abnormal Suspend Refer to 2 2 2 HW Fault Unique to Replication in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Defreeze the Data Replicati
31. E EEE S EOE EERE EEE E ETE O EOE THEE Eee E eee eee Ee exec Executing Replicate Separate or Restore sync Replicate or Restore synchronization state rpl replicate Replicate TP EXEC aiczescscdez Executing synchronization PPU SYNC ssscsescsaors Synchronization state sep separate Separate BE EXCC sariri Executing Separate separated Separate completion state rst restore Restore l TSU EXEC gecctsusec Executing Restore eH Ore pole exceed TSt SYNC 0004 Synchronization state ee ee ee placed and then automatically changed to Separated State separated Figure 2 2 Replication Operations and State Transitions 12 Chapter 2 Data Replication 2 3 1 Replicate and State Transitions When Replicate is performed data copy from MV to RV starts to reflect the content of MV to RV Any update to MV after Replicate is also reflected to RV After Replicate is started the difference between MV and RV gradually decreases and eventually the content of MV at the beginning of Replicate is completely reflected to RV The difference is zero The state from the beginning of Replicate to the content of MV is completely reflected to RV 1s called the Replicate execution The state where the difference between MV and RV is zero is called the state synchronized by Replicate or simply the synchronous state Replicate execution and the state synchronized by Replicate are collectively cal
32. EEE E EE 105 4 2 1 Direct Operation for a Disk ALrray cccccceeesessessesessesessssessssesseeseeseseeeeeseseseeeeeseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 106 4 2 2 Operalions Linked WHN ISM iia AN 109 4 3 Volume Tpos na E E EE 111 4 4 Replication Operation File 0 0 0 0 cece cccesesssssseesseseseeseeseeeeeseeseeseseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeeeeeeeees 112 4 5 V Oltme List Cr Caron Islay aanre bccuceeuectmecestoceece 113 4 5 1 Command Operations Vy INdGOWS seceecccrececaceteeracenearcudertenceccseatcesteemnasentaneadiss easeecteoneeceitoneidemuecatotendereerneceoteee 113 4 5 2 Command Operations UNIX uo cccccccsccceccceeeeeeeeeeeeeceeceaceceeeeaeaeeeeeaeeeeeaecaceaeeseeeeceeaaeeeeeeeeeeeeeeaaaaaaaaeaaaeaaaas 119 4 5 3 GULOperations WC OWS a scecvecncceresnsectvecnsscunanadpwadecansendscaaecedecaaecns scene wedecaneandsdeuenedeca AEE OAE 124 AG ANG DIWCATIOMEO PC fa 1 OS eiea EEEE 140 4 6 1 Replicate Command ss2ccc lt e3 csdetaadeeaessdacseneadeesasaecadebeaieeseniaasadeaea ties sada 140 4 6 2 BG Ae C OP ALN es cae ccacss cane egress ceases samsesasyscteesicane saaecessceas cant cam NE 146 4 6 3 Koor OFM a a EE E E A EE E A EE cateed acca eaaueeaneoreraancamtanteeees 151 4 6 4 Copy Control State Change Command ccccccccccccsscccccccccccceceeececeecececeeeaeeeeeeeaeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaeeesaaeaaaes 157 4 6 5 WY Gil COMMING E E E E E E E E E E E S E E 161 4 6 6 Replication State Displa
33. Example of Unpair Screen 46 Chapter 3 Replication Management From the list select a pair you want to unpair and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot be selected i Selected Volume List Displays the list of the pair MV RV information selected in the Replication Information screen Volumes whose Execution Result is Unexecutable cannot be selected because they do not satisfy the execution conditions For the Unexecutable volumes do the following by referring to the Unexecutable Information MV Monitoring Change the disk array of MV to the Monitored state and execute it Suspended again RV Monitoring Change the disk array of RV to the Monitored state and execute it Suspended again RV Force Unpaired Perform Forced Unpair for MV MV Outside 1SM Execute it for a pair under the iSM management Management All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure re been registered to Execute it for a pair that is not registered in the AT group Sroup Or execute it after deleting a volume from the AT group i Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog When you click the Execute button the following messa
34. MV mv volume mvflg mv flg Specifies the volume and volume type of MV e Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV For information about volume types refer to 4 3 Volume Types 2 Copy Control State The following Copy Control State can be specified e Synchronous Copy sync Changes the Copy Control state to the Synchronous Copy mode e Semi synchronous Copy sem1 Changes the Copy Control state to the Semi synchronous Copy mode This can be specified for paired volumes in different disk arrays e Background Copy bg Changes the Copy Control state to the Background Copy state e Suspend suspend Changes the Copy Control state to the Suspend state e Resume resume Changes the Copy Control state to the Foreground Copy state The following table shows the Copy Control state before and after the change is made 157 Chapter 4 Functions of ReplicationControl Table 4 5 Relations of Copy Control State Change Option sync ee synchro semi bg suspend resume ae ae background suspend resume State before Change nization synchronization semi semiseri o 0 o a Peeters oO o a o o we fo o o a o O The state can be changed A The state can be changed but the Copy Control state cannot be changed x The state cannot be changed Displayed Information The iSMrc_ change command displays the following message when the Change C
35. RV access restriction ssesseseesseessnssessreresrrreresee 20 71 Ey TINO e E ri 34 RV mod chante eee ai 71 TR WA E E E A E A I AA 20 S Ea PE each coset gainer I E T ETTE E assent 98 save pair setting information ssssssnnnssssseeeeessse 93 screen of volume list display cceeccccccceeeeeeeeeees 124 searc i operat Oleas EE 5 selecting disk array NAME ooooonnnnessesooeenesssee1eees 128 semi synchronous COPY MOAEC eeseeeeececeeeeeeseeeeeees 17 SLE e ne a EE ENT 10 54 104 106 146 5D 621 rc a a eee 10 Separate COmpletion Jessem srein rakiseid rehine eatis 10 Separate immediate eee eecceeceeseeeeeeeeeeeseeeee ees 10 SOMA ALC COMMA saserirristir ottiene NE n i 146 separate executio 3 ceccsececseceacenccsss Mectioseeatteazenececeseeeioers 16 Separate execution State oo eeccccccccesssssseeceeesseeeeeeeees 14 separate 6 ote eaten Ree eR ee eee ei ee 16 Separate Sale aeee 14 E EEIE A E AEA E EA enn ee 16 SS PVA ASG Sale cossiran sree oS saeco eeaene seen nteeadeceds 14 S Ll EA EE EE E A A N 111 signature operation sssssesirenssssresrrrsssee 104 106 DIVE NSi 110 special Fil 6 naMe srresssiieecesisr eeticctecccutatedane 111 119 specific volume name display cccceccccceceeseseeeeeees 169 specific volume name display command 169 starting terminating volume list display 127 state monitoring information
36. Replicate Screen next displayed perform Record Screen Information 3 3 16 Refresh While the iSM server in the upper left part of the configuration display area is being selected this function refreshes information of the disk array connected to the server The information displayed on the screen is cleared While the Disk Array icon on the configuration display area is being selected this function updates and redisplays the selected disk array and the list of volumes of the disk array linked to the selected disk array In any case clicking the Cancel button before completing Update returns the screen to the state before update Do one of the following e Click View on the menu bar and then select Refresh e Press the F5 key 95 Chapter 3 Replication Management When you perform Refresh the following message is displayed isM Qe 02602 n Information being displayed now will be all discarded Is it OK to executer Cancel Figure 3 51 Warning Screen for Refresh 3 3 17 Record Screen Information The screen information of Replication Screen is recorded The recorded information is reflected the next time the Replication Management screen 1s activated On the menu bar do the following e Click View and then click Record Screen Information Recorded Items e Width of the item e Location of the item e Screen size e Screen location e IV display state e Update interval of informatio
37. Unpair Tr F a T 54300 Operation Help Pair Setting F he T F Unpair Volume Operation Forced Operation Freeze Derreeze Background Copy Level Change System Operation 3 3 10 Freeze Defreeze 3 3 11 Background Copy Level Change Storage3100 0010 For details on operations related to the Operation Help AT group refer to the Data Replication Bait Serbia Dpat Saume peratiam F User s Manual Disaster Recovery System Installation and Operation Forced Giperation F Guide System Operation F Storage53100 0010 Operation Help Replication Help Fi Dialog List Displays Help on the Replication screen Displays Help on the dialog list regarding Replication screen 40 Chapter 3 Replication Management 3 2 6 Information Displayed on Execution Dialog The Execution dialog displayed for replication operations can be switched to Summary or Details display mode for the volume related information displayed In the description given below the unpair execution dialog is used as an example You can read operation in the description as Replicate Restore etc to be carried out Figure 3 6 shows an example of an Execution dialog information screen Items added when Details is selected Unpair Copy Control State Copy Mode Bar atle Separated Unexecut Have been Separate Separated Forced
38. Volume List Display screen click the Close button olume List Properties DE Version gt 3 005 Created A004 10727 1706 20 Owner HostName ENG 5 2 Disk Array 2g Volume Information 4 Figure 4 13 Property Information of Volume List e Version Displays the version information of the Storage Manager Volume List used to create the volume list e Created Displays the date when the volume list was created e Owner Host Name Displays the host name of the server owning the volume list e Disk Array Displays the total number of disk arrays in the volume list e Volume Displays the total number of volume information items in the volume list 132 Chapter 4 Functions of ReplicationControl 4 5 3 6 View Hide Toolbar To select whether to view or hide the toolbar specify View Toolbar on the Volume List Display screen View Fie View Operation Help Sa Disk Array Subsystem fat Drive Letber Path Name volume Definition Disk Arra Classification Figure 4 14 Viewing Toolbar Hide FA Volume List Display Mil File View Operation Help Disk Array Subsystem aut Drive Letter Path Name Volume Name Disk No Volume Definition LUN LON LO Name Disk Arra Classification Figure 4 15 Hiding Toolbar 4 5 3 7 View Hide Status Bar TP ae aeeReR RRR RP RR RRR RP RRR RRR RRP RRR RRR Re RRR RRR RRR RRR RRR RRR RRR RRR RRR EE S To select whether to view or hide the status bar specify View Status
39. When updates to MV are done to the area where copy to RV has not been completed gt In this case to use RV after the freeze state is cancelled you must perform Replicate again to copy data and perform Separate e Freeze in the Replicate state If the pair goes into the freeze state in the Replicate state copy operation between MV and RV is suspended Copy operation is automatically resumed when the freeze state is cancelled e Freeze in the Restore state If the pair goes into the freeze state in the Restore state I O terminates abnormally when reference or update is performed to the area where copy from RV to MV has not been completed If the pair goes into the freeze state in the restored state copy operation between MV and RV is suspended Copy operation is automatically resumed when the freeze state is cancelled 22 Chapter 3 Replication Management Chapter 3 Replication Management This chapter describes various operations of Data Replication by the Graphical User Interface GUI 3 1 Replication Management Overview This chapter describes an overview of various operations and the management method regarding data replication that uses the replication management function 3 1 1 Operations and Authorization Levels Use the following functions to perform operations related to Data Replication through the iSM Client e State Monitoring e Replication manager e Configuration setting Since operations performed from Replication
40. being performed between the upper volume the lower volume and the derived volume that are paired xiii Snapshot is not in operation 61 Chapter 3 Replication Management a Figure 3 21 illustrates the execution conditions of Restore Each of 1 to xiii in the figure corresponds to the respective number above Replication Target Disk Pair Setting Separated Semi synchronous not allowed for the same disk vi Separated xii Separate is not being performed for an upper volume array Not in the Freeze state Disk array monitored MV and RV are unmounted from the host The specified MV is not registered in the AT group Target Pair vii Separated xii Separate is not being Target Pair performed for a lower pair v Separated xii Separate is not being performed for a derived pair Target Pair T xiii Snapshot is not in operation Figure 3 21 Execution Conditions of Restore 62 Chapter 3 Replication Management 3 3 5 Suspend Resume Copy You can suspend and resume copy operation in the Replicate or Restore state Operation Procedure Suspend Copy The Foreground Copy or Background Copy state is changed to the Suspend Copy state Do one of the following to display the Suspend Copy screen e Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen point to Volume Operatio
41. between the MV and RV contents into the RV and makes the RV available after completion of separation Even though Separate is executed immediately after Replicate starts RV cannot be used while the difference between MV and RV is being reflected to RV RV becomes available upon completion of separation e Separate for immediately making RV available Separate immediate While reflecting the difference between the MV and RV contents into the RV the Separate function makes the RV available even during separation You can instantly create RV and make it available by executing Separate immediate This function is available only for performing data replication in the same disk array The product DynamicDataReplication Ver2 is necessary for using the function 10 Chapter 2 Data Replication 2 2 3 Restore This operation copies data from RV to MV It is performed to restore data from the backup volume RV when a failure occurs in MV When Restore is executed the RV contents at the point of starting Restore are reflected copied into the MV At this time you can determine whether to reflect the updated data of the MV into the RV by choosing either of the following e Restore with RV being updated Restore update Restores the MV while automatically reflecting the updated data of the MV into the RV Even after the difference between MV and RV is resolved and Restore is completed any data update made to MV is reflected to RV
42. commands provide functions necessary for Windows disk operation linking with the replication operation commands or snapshot operation commands rather than a function that replaces Windows Disk Management By using disk operation commands together with replication operation commands or snapshot operation commands on the Windows system you can easily conduct operation that is comparable to the operation conducted on UNIX 4 9 1 File System Flush Command To carry out a file system flush the iSMrc_ flush command is used The iSMrc_ flush command flushes the file system without unmounting the association of a drive letter and volume and writes the data in the file system buffer which has not been reflected to the disk When you execute this command you can reflect data to the disk without quitting the application This command executes Flush in units of volumes and flushes only Windows file systems so that other volumes or applications handling their own cache control are not affected To flush application data you also need to use the flush process specific to the application Main Options For the iSMrc_ flush command the target volume is specified by its drive letter mount point volume name or NTFS folder name Displayed Information The iSMrc_ flush command displays the following messages when Flush starts and ends Start message Flush Start YYYY MM DD hh mm ss disk_number Id_ name type volume_name path End
43. copy fault Copy for reflecting difference is not performed I O of updates to MV is completed when data is written to MV and the data is accumulated as difference information Reflection to RV is not performed 17 Chapter 2 Data Replication eee Copy control states can be specified when Replicate or Restore is performed You can also change the copy control state you specified at Replicate or Restore as required When Restore with RV protection specified is executed only copy for reflecting the difference is executed thus the updated data of the MV is not reflected into the RV Therefore specifying or changing a copy control state Synchronous Copy Mode Semi synchronous Copy Mode or Background Copy has no effect There are the following five instructions to change the copy control state e Synchronous Copy instruction e Semi synchronous Copy instruction e Resume instruction e Background Copy instruction e Suspend instruction The Resume instruction changes Background Copy or Suspend to preceding Foreground Copy Synchronous Copy Mode Semi synchronous Copy Mode Figure 2 6 shows the state transition diagram of the copy control states Foreground Copy Semi synchronous Copy Mode can be used only for a RemoteDataReplication pair Semi synchronous Copy Mode Sync Copy Mode Background Copy Instructign Synchronous Copy or Semi synchronous Copy or Resume Instruction Susp
44. disk array that has a copy fault no faults are displayed on the copy fault list screen You must acquire the volume information of the disk array that has a copy fault For the procedure for acquiring the volume information refer to 3 2 3 Replication Information Screen On the menu bar do the following e Click View and then click Copy Fault List Figure 3 54 shows an example of the Copy Fault List screen Copy Fault List Logical Disk Name MV Disk Array Name Pair Disk Name Abnormal Suspend SAM TEST MAX 03C8 z300 0434 SAM TEST MAX O3C9 Choose volume pair in fault status from list then click corresponding button each dialog will be showed individually Fault Because copy fault occurred Forced Separate was executed inside the Disk Array Replicate or Restore can be executed Abnormal Because copy error accurred Forced Suspend was executed inside Suspend the Disk Array Resume Copy or Forced Separate can be executed Fault Abnormal Suspend Process Eeplicare i Bestore Resume Copy Forced Separate Figure 3 54 Example of Copy Fault List Screen When you select a volume of the failure pair from the list and click one of the buttons the corresponding dialog box appears 101 Chapter 3 Replication Management i Status Fault Forcefully separated in the disk array due to a copy fault Abnormal Suspend Forcefully suspended in the disk array due to a copy fault
45. disk_array_name SAA saa Differential Map diff_ map Replication Status replication status Back Ground Copy Level bgcopy_level Max Number of RV Setting rv_setting Description disk array name Disk array name saa SAA Subsystem Absolute Address Indicates a unique value that identifies a disk array diff map Installation of Differential Map Indicates whether the difference management function which holds the update difference between MV and RV is present e Build Differential Map is installed e Not Build Differential Map is not installed replication_ status Status of the replication function of a disk array e Ready The function is available e Freeze The function is unavailable The replication function of the disk array freezes or the disk array is OFF bgcopy_level Background copy level Indicates the priority of Background Copy rv_ setting Maximum number of RVs that can be set Indicates the maximum number of RVs that can be set for one MV 2 When the linfo option is specified How disk arrays are connected each other and the status of link paths are displayed When multiple paths are connected or multiple disk arrays are linked all information on the link paths is displayed Link Disk Array Name disk_array_name Link No link_number Path No path_number Path State path_ state Director No director number 179 Chapter 4 Functions of ReplicationControl Description disk array name Name of the disk array to
46. e Unexecut Replicated Replicate Background Copy Synchroni Separate Choose pair s which you want to unpair from list then click Execute button It is possible that multiple pairs are chosen and executed Execute Close Help Figure 3 6 Example of Execution Dialog Information Screen Information on the following items is displayed on the information screen of the execution dialog Ttems v vi and vii are displayed only when Details is selected i Execution Result Displays the execution result of the operation Operation cannot be performed for a pair with Unexecutable After the operation is executed the execution results for the operation are displayed To check on the progress after the operation close the execution dialog and check the progress on the Connection Screen ii Unexecutable Information Displays the reason why operation cannot be performed iii Activity State Displays the execution state of the pair 41 Chapter 3 Replication Management iv Logical Disk Name Displays the logical disk name of MV v Copy Control State Displays the control state during copy vi Sync State Displays the transition status in the activity state vii Copy Mode Displays the Synchronous Semi synchronous mode during copy operation viii Number Displays the logical disk number of MV ix MV Disk Array Name Displays the disk array name to which MV belongs x Pair Disk Name D
47. ee se EEES 21 3 2 1 ISTIC ALON oere e earna E O EO EE 27 3 22 Configuration Display ATCA lt c1s 2ccccnccrscareccieccentesacesactcacacncanstananaiaceenteancetanctaccencaeatananaiacnenseangeianenccsccncneuccacenuenuca 28 3 2 3 Rephicanon Bouts gad 4 6 sth cy eE nen nine arene Nee von meer Tae nnn Sette mr er tn mtn cr ee nnin Sette onan nen tsnn a tmrre arta neater 30 3 2 4 Disk Array LNE Inornmnation SCLC i acc ce vars anseteacaceedaedencetenesicusesancelnacsaeuaedencetaaesicusareaastnadanccdanueantectaleneeinces 36 3 2 5 NDE i e E E son tenesecaaaneionseseaneocscoenancessaies 39 3 2 6 Information Displayed on Execution Dialo Give occ cccccecsoecactenenthecihoucesiweustensutbeeubcwenseessuteceovaucdeneui E EEEE 4 3 3 Various Operations of Replication Management resins u naiera aa eae a aa Ea a a aia aaa aa EES 43 3 3 1 IA SO US A A eset E capes tian EEE nae aes E E aaa aes noes teense ae selene E E E 43 3 3 2 SC AM ana E Sine cree ses ins bares ac tia nc E se le bn ernest nsec E esses es ede esses 50 3 3 3 ROLE ETE E e ae en ee ee nn ee eee ee eee ee enn ne eee ene ere eee ener erent 54 3 3 4 ROSO cars octane ueiion E E E E E E 58 Ja Suspend Resime Copy ae ne oR e T e PRO eee eer eRe ke RO ee See ee 63 3 3 6 Chanos to Daear i G10 0 Geen eee meee enaee meee E E Sere are rserernn Nt ote tare atte 68 3 3 7 Ra Mode A ects Sete e E setae otis sa oars oe aes sets nein E sas oes a ea eis E E E 71 3 3 8 Forc fre 0 e cane nee eee ne ene ee ee
48. group with a special file name logical disk name you must specify the same number of logical volumes that make up the volume group or disk group as MV RV on the special file name logical disk name side In this case Replication is performed in specified sequential order UNIX only The above execution conditions 11 111 x11 xiii xiv and xv are not applicable when conducting a joint operation with the iSM replication management Figure 4 26 illustrates the execution conditions of Replicate 144 Chapter 4 Functions of ReplicationControl i Pair setting ix Not in the Restore State ii MV or RV has been registered in the volume list The volume list is not being created or updated RV has been unmounted Disk array is not in the Freeze state Separated Semi synchronous Copy cannot be performed on the same disk array xii The disk is not a dynamic disk or GPT formatted partition disk viii Not in the Snapshot Restore operation from SV Figure 4 26 Execution Conditions of Replicate 145 Chapter 4 Functions of ReplicationControl 4 6 2 Separate Command For Separate the iSMrc_separate command is used The iSMrc_ separate command separates RV from MV and makes RV available from the system MV and RV must be set as a pair Main Options For iSMrc_separate command you can specify the following options regarding the Separate operation 1 2 3 Specifying pair
49. has succeeded Message output when a drive letter or an NTFS folder name is deleted automatically YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second disk number Physical disk number ld name Logical disk name type OS type volume name Mount point volume name path Drive letter or path name mounted on the NTFS volume folder accessed by users 1SM13221 Resetting drive letter drive volume_name has succeeded Message output when a drive letter or an NTFS folder name is deleted automatically Execution Conditions To perform Unmount the following conditions must be satisfied i The target volume is registered in the volume list ii The target volume is in the Read Write available state iii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed iv When the volume to be unmounted is being used by another application unmount operation may be terminated abnormally In this case to cancel reference or update by another application forcibly execute the CHKDSK command with F X specified v On Windows 2000 when the offline option is specified or if the volume to be unmounted is LV the access restriction of the disk logical disk is changed to in the Not Ready state Therefore if a volume on the disk with multi partition configuration is unmounted pay attention to the operation procedures because all volumes partitions on the target disk are in the state where
50. it is operable FREEZE Indicates that the Data Replication function is frozen due to a power down process of the disk array or acceptance of a Freeze instruction iv Background Copy Level Displays the priority of Background Copy v Maximum Number of RV Setting Indicates the maximum number of RVs which can be set for one MV vi SAA Subsystem Absolute Address Displays an address value which can uniquely identify the disk array not overlapping with other disk arrays vii Maximum Number of Concentrator Maximum Number of Volumes of One ATgroup Maximum Number of Volume of All ATgroup For details refer to the Data Replication User s Manual Disaster Recovery System Installation and Operation Guide 3 3 19 Display Link Properties The link states are displayed Do one the following e Select an item in the Disk Array LINK Information screen click View on the menu bar and then select Properties e Select an item in the Disk Array LINK Information screen right click it and then select Properties Figure 3 53 shows an example of the Link Properties screen 98 Chapter 3 Replication Management Storage 54300 Link Properties F Figure 3 53 Example of Link Properties Screen The items indicate the following information Refer to Figure 3 5 Replication Link Information i Link Disk Array Name Indicates the identification name assigned to the linked disk array ii Path Number Indicates
51. manager includes important operations on volumes the operating authorization is set according to the following allowance levels However when the server is disconnected by State Monitoring after displaying the Replication screen only the currently displayed state the information gained while the server was connected can be referenced regardless of the operation authorization e Ll Allows only reference e 12 Allows replication related operations copy operations in the administration level e L3 Allows all operations For information on how to set and log in refer to the User s Manual or User s Manual UNIX in accordance with your OS 23 Chapter 3 Replication Management Table 3 1 lists the operations and state displays Table 3 1 List of Displays Operations of Data Replication Replication Management State Configuration Operation Item ae Su Operation Authorization Monitoring Setting Display N U Set Disk Array Name Set Logical Disk Name Link State Pair Setting Unpair Replicate Separate Restore Suspend Resume Copy Change to Background Copy RV Mode Change Forced Separate y il Forced Unpair o o Freeze Defreeze d o d o d o Background Copy Level Change J o y o n Pair Batch Seting ooo o o do lo Available Not available a ae L L1 Allows only reference L2 Allows replication related operations copy operations in the administratio
52. map file to the disk e Deleting signature del Deletes the signature saved in the map file e Initializing signature init Initializes the signature of the physical disk e Displaying the list of signature information list Displays a list of signatures saved in the map file and those saved in the disk array or displays the signatures of the specified physical disk e Exporting signature to a file export Writes the signature information to the specified file e Importing signature from a file import Reads and registers the signature information recorded in the specified file 187 Chapter 4 Functions of ReplicationControl SS SS SS SS Ss oS Displayed Information The following information is displayed in the signature information list of the iSMrc_ signature command Displayed information Disk Map Disk Saved LV Link Disk Array Name No LDN Signature Signature Signature Attribute Status disk_array_name dskn Idn map_sig disk_sig saved sig attribute link_status Description disk array name Disk array name dskn Physical disk number Idn Logical disk number in hexadecimal map sig Reads and displays signature information saved in the map file by the read option disk sig Displays signature information read from the physical disk directly saved _ sig Displays signature information saved in the disk array attribute Displays the logical disk attribute for the data replication and snapshot functions link
53. not function properly because inconsistency occurs in the recognized states of MV and RV Displayed Information When the pair setting and unpairing has been successfully performed by the iSMrc_pair command the following message appears ISM13247 Command has completed successfully Ccode pppp xxxx XXXX XXXX Description pppp Process number XXXX Detailed information code value for maintenance Execution Conditions To set or unpair the following conditions must be satisfied i The target MV or RV is registered in the volume list 1i The disk array where the specified MV and RV are stored is not in the Freeze state i1 When setting a pair the MV s and RV s logical disk capacity and OS type must coincide iv The RV to be set as a pair should not be paired with another volume v To release a pair the target MV and RV are set as a pair vi To release a pair the operational state of the target pair is the Separated state vii Logical disks are not registered in the reservation group viii A volume is not the link volume LV of the snapshot function ix A volume is not the snapshot volume SV and snapshot data volume SDV of the snapshot function x The base volume BV of the snapshot function is not used as RV 176 Chapter 4 Functions of ReplicationControl id xi The volume list is not being created or updated xii Specifying a volume of a dynamic disk or a GPT format partition
54. of an LVM volume group or a VxVM disk group with a special file name logical disk name you must specify the same number of logical volumes that make up the volume group or disk group as MV RV on the special file name logical disk name side In this case Copy is performed in specified sequential order UNIX only The above execution conditions 11 111 vii viii ix and x are not applicable when conducting a joint operation with the iSM replication management Figure 4 27 illustrates the execution conditions of Separate Pair setting MV or RV has been registered in the volume list The volume list is not being created or updated Target Pair i MV has been flushed or unmounted Disk array is not in the Freeze state Not in the Restore operation The disk is not a dynamic disk or GPT formatted partition disk Figure 4 27 Execution Conditions of Separate 150 Chapter 4 Functions of ReplicationControl 4 6 3 Restore Command For Restore the iSMrc_restore command is used By executing the iSMrc_restore command copy from RV to the paired MV starts Before Restore is performed MV and RV to be specified must be paired beforehand In addition MV and RV to be specified must be registered in the volume list created by 1iSMvollist beforehand If RV is used as a file system the mount of the file system must be canceled before Restore is started On the Windows system unmount the MV and flush the buff
55. reference request for the RV is made and access to an area where difference copy from the MV into RV is not completed is to be made control is performed for copying the difference from the MV into RV before permitting access to the area The updates made to MV until Separate is started are reflected to RV The updates made to MV after Separate is started are not reflected to RV and managed as update difference The updated states of MV and RV are managed in Separate State so that the difference between the MV and RV contents is reflected when Replicate Restore is executed Update to MV Update to MV Update to MV Until the difference between MV and RV is fully reflected Separate operation starts Synchronous State Separate Execution Separated State Separate State Figure 2 4 Separate and State Transitions 14 Chapter 2 Data Replication 2 3 3 Restore and State Transitions When Restore is performed data copy from RV to MV starts to reflect the content of RV at the beginning of Restore to MV When Restore update is executed any update to MV after Restore is also reflected to RV After Restore is started the difference between MV and RV gradually decreases and eventually the content of RV at the beginning of Restore is completely reflected to MV The difference is zero The state from the beginning of Restore to the content of RV at the beginning of Restore is completely reflected to MV is called the Restore execution
56. release the Not Ready state and mount the volume Main Options For the iSMre_ mount command the target volume is specified by its drive letter mount point volume name or NTFS folder name When you mount a volume with the mount point volume name specified you can also specify mount point drive letter or NTFS folder name at the same time To mount a volume set the specified drive letter or NTFS folder to the target volume Displayed Information The iSMrc_mount command displays messages when Mount starts and ends Start message ISMrc_mount Info ISM13220 Setting drive letter drive volume_name has succeeded Mount Start YYYY MM DD hh mm ss disk_number ld_ name type volume_name path ISMrc_mount Info ISM13220 Setting drive letter drive volume_name has succeeded End message Mount Normal End YYYY MM DD hh mm ss disk_number ld_ name type volume_name path Description 1SM13220 Setting drive letter drive volume_name has succeeded Message output when a drive letter or an NTFS folder name is set YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second disk number Physical disk number Id_name Logical disk name type OS type 183 Chapter 4 Functions of ReplicationControl isd volume name Mount point volume name path Drive letter or path name mounted on the NTFS volume folder accessed by users 1SM13220 Setting drive letter drive volume name has succeeded Messag
57. that the Data Replication function in the target disk array is frozen Link Checkin Indicates that the link status is being checked due to a failure of communication amp in the link It transits to Normal or Fault after a certain time interval Indicates that the link is invalid due to a failure of communication in the link v Director Number Indicates the replication director number host director for the S2400 and 2800 series that the link is set 37 Chapter 3 Replication Management Figure 3 5 shows an example of two disk arrays connected to Disk Array 1 for using RDR The following shows an example of 3000 4000 series Director Number Port Number Path Number 00h LINK Number Path 00h 0 Path 01h 1 Path 02h Path 03h Path 00h Disk Array 2 11h P Path 01h 01h Replication Director Disk Array 3 Figure 3 5 Replication Link Information 38 Chapter 3 Replication Management 3 2 5 Menu Item List The list of menu bar items of Replication Management is shown below For details refer to description on each menu item El kepli Storage4300 File View Operation Help CY Output of Information List Display 3 3 13 CSV Output of Information List Display Save the Pair Setting Information 3 3 14 Save Pair Setting Information Closes the Replication screen Close Alk F4 Storage4 300 Shows or hides the status bar View Operation He
58. the volume list is created or updated successfully the following message appears iSM11700 Please wait a minute iISM11100 Command has completed successfully ii When the d option is specified The disk array information as shown below is listed Disk Array List Disk Array Name Number of LDN disk_array_name number Description disk array name Disk array name number Number of logical disk information items special file for each disk array registered in the volume list ii When the l option is specified Information of the correspondence of the logical disks as shown below is listed LDN LD NAME VAA TYPE Special File Disk Array Path Idn Id_name vaa type special_file_name disk_array_name path 120 Chapter 4 Functions of ReplicationControl Description Idn Logical disk number ld name Logical disk name vaa VAA Volume Absolute Address type OS type special file name Special file name disk array name Disk array name path Whether to use a special file Usually this field is blank and nothing appears in this field however when data replication or snapshot is performed if an error is detected in access to the special file B appears About the state of Path whether to use a special file Establishing multiple connections to the same logical disk enables a path special file to have redundant configuration In this case for each command of data replication or snapshot when a
59. to MV is reflected to RV As a rule read and write to RV are not allowed Restore State Restore Execution rst exec e Reflection of the difference between MV and RV at Restore has not been completed The difference is being reflected from RV to MV e When Restore update is executed the updated data of the MV is reflected into the RV e When Restore protect is executed the updated data of the MV is not reflected into the RV e As a rule read and write to RV are not allowed Synchronous State rst sync Reflection of the difference between MV and RV at Restore has been completed When Restore update is executed the updated data of the MV is reflected into the RV When Restore protect is executed the updated data of the MV is not reflected into the RV and the Separate completion state is automatically entered As arule read and write to RV are not allowed 16 Chapter 2 Data Replication 2 4 Copy Control State If the activity between volumes with the pair setting is the Replicate or Restore state you can change the copy method of data between MV and RV according to the load status of the disk array The state to which a transition is made by the instruction to change the copy method is called the copy control state There are the following two types of copy between MV and RV in the Replicate or Restore state e Copy for reflecting difference Copy to reflect the content of MV RV for Restore at Replicate
60. type RV special_ file name ld name type Execution message Restoring End message Restore Normal End YYYY MM DD hh mm ss MV special_ file name Id_name type RV special_ file name ld name type Description The execution message and the end message appear only when wait has been specified to wait for the Synchronous State rpl sync If you do not want the execution message to appear change the setting of the RPL WAITMSG environment variable For information about environment variables refer to the Data Replication Command Reference YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second special file name Special file name Id_ name Logical disk name type OS type Restoring The character is dynamically updated until Restore is completed 154 Chapter 4 Functions of ReplicationControl Execution Conditions To perform Restore the following conditions must be satisfied i The target MV and RV are paired ii The target MV or RV has been registered in the volume list iii The volume list is not being created or updated iv Both MV and RV are unmounted from the system v The disk array where the specified MV and RV are stored is not in the Freeze state vi The Activity State of the target pair is Separate However Separate is not being executed vii When the specified MV is used as the base volume BV of the snapshot function snapshot is not be established
61. used for operations is connected to a business server and the RV used for backup and the like is connected to a backup server or others To perform direct operation you need to register the logical disk that is recognized by a server OS and can be accessed in the volume list on each server 106 Chapter 4 Functions of ReplicationControl Business Server Backup Server ReplicationControi ReplicationControl Volume List Volume L FC COn AN FC Connection Arrn l 1 1 F i X z LPs r N Fd 3 p Ne ma r A a x a neaeueee ccessvLontro sirnana Figure 4 1 Direct Operation to MV or RV Volumes e A volume control volume is prepared to issue an I O to a disk array and operation is performed through the control volume Since operation is performed through the control volume a business server or a backup server can operate MV or RV even though those servers cannot access MV or RV directly Depending on the Access Control setting of the disk array however operation can be performed only to the logical disk permitted to access the server or the logical disk that pairs with a logical disk permitted to access the server Select a logical disk for each disk array from logical disks connected to each server as a control volume and define it as the volume used to issue an I O to a disk array beforehand to register it in the volume list Defining a control volume in the volume list
62. 00004C7FO0439E003F tom_E O40h 0040h 2000000040 7FO49E0040 tom_E Hh O041h 2000000040 7F049E0041 tom_E O44 0044h Ha same torm_E O45h 0045h LE 0045 tom_E O46h O046h EOOO00004CFFO4SE0046 tom_E O47h O04 h ZOO000004CFFO45SE0047 tom_E O49h 0045h 20000004C FFO4SE0045 tom_E Figure 4 22 Delete Control Volume 137 Chapter 4 Functions of ReplicationControl 3 When you click the OK button on the Define Control Volume screen the message for confirming whether to save the definition information appears The definition of control volume 00027 Do you want to sawe the definition of control wolume Figure 4 23 Save Confirmation Screen of Define Control Volume Screen When you click the Yes button for the confirmation the definition information is saved and the completion message appears To return to the Define Control Volume screen click the No button The definition of control volume 00028 Succeeded in saving the control volume The definition of control volume was completed Please createfupdate the volume list Figure 4 24 Completion Message Screen of Define Control Volume Screen To close the Define Control Volume screen and return to the Volume List Display screen click the OK button To enable the saved definition information create or update the volume list to reflect the definition information of the control volume to the volume list When you click the Cancel button on the Define Cont
63. 004051 7634012E 44637 WIB 12 TIBI 2 100 1258 012th 200000004C517634012F aa 1001259 Ol2th 200000004C5 17634012F ne M Dynamic DataReplication Turns to the layer color Hot Ready because Separate is complete Separate is complete 52100 1258 00L WH 12S DELL_REFAMILDO 00000 2 1001258 DDL WN 1T253 EXP O890 LD 000 E l oW DynaricDataRepliecation Others PUY Ferrat You can perform the replication operations by right clicking the volume in the Connection screen For how to operate refer to the items in 3 3 Replicate Separate Restore Suspend Copy Resume Copy Change to Background Copy RY Mode Change Forced Separate 90 3 3 2 Replicate 3 3 3 Separate 3 3 4 Restore 3 3 5 Suspend Resume Copy 3 3 5 Suspend Resume Copy 3 3 6 Change to Background Copy 3 3 7 RV Mode Change 3 3 8 Forced Separate Chapter 3 Replication Management 3 3 13 CSV Output of Information List Display The replication information the disk array LINK Information and the AT group information for the specified disk array can be output to a file in CSV format This CSV file can be used as a data for spreadsheet software On the menu bar do the following e Click File and then click CSV Output of Information List Display Figure 3 48 shows an example of the CSV Output of Information List Display screen CS Ou
64. 7 eyed IV disk7 0044h Olz4h 200000004C S2300 0244 IV disk3 00h 0016h 1258 5HREK S2100 1256 IV disk10 Ozh 0017h 1258 SHREK S2100 1258 IV diskt 1 oooh oooh mw Ol 52100 1259 MV disk12 00ih oooh mw 02 52100 1259 IV disk13 oozh Olifh RPL200_011F S2100 1259 IV G WeiWwolumes disk5 002h o122h 200000004C S2300 0244 IV H Wrivolume disk 05h Ol25h 20DOO0004C S2300 0244 IV Paired Linked Logical Disk Information List Disk Array EY oish rw 0l S2l00 1259 VOLUME 113 4 Figure 4 7 Narrowed down Display by Disk Array 128 Chapter 4 Functions of ReplicationControl 4 9 3 3 Create Update the Volume List To update the Volume List select File and then select Create Update Volume List on the Volume List Display screen Operation Procedure 1 Select File and then select Create Update Volume List on the Volume List Display screen The following inquiry message is displayed Create Update Yolume List 2 00011 F The volume list is used in data replication control or snapshot Please separate all paired Ris which are connected Please specify the drive letter and path name of NTFS Folder that are used by data replication control or snapshot Do you want to createfupdate the volume list E Cancel Figure 4 8 Execution Confirmation Screen for Create Update Volume List 2 Clicking the OK button executes Create Update Volume List
65. Bar on the Volume List Display screen View WOLUME ale Figure 4 16 Viewing Status Bar Hide Figure 4 17 Hiding Status Bar 133 Chapter 4 Functions of ReplicationControl 4 5 3 8 Updating Display Information To update the information of the Volume List file select View and then select Update Display Information on the Volume List Display screen The Volume List file contents are obtained and the Volume List Display screen is automatically updated Defining Control To start the screen for defining a control volume select Operation gt Define Control Volume from the Volume List Display screen A control volume is a volume used for issuing a control I O to a disk array from a server To define a control volume prepare a volume beforehand such as IV which can issue an I O to a disk array from a server securely Do not select RV or a link volume LV of the snapshot function as a control volume because they cannot be accessed from a server OS while data replication or snapshot is operated For a control volume refer to 4 2 1 Direct Operation for a Disk Array Operation Procedure 1 To display the Define Control Volume screen select Operation Define Control Volume from the Volume List Display screen Define Control olume 1 Selected Volume List CT ick B O43h O043h AOO000004C7FO49E0043 tom_E Add Delete ii Candidate Yolurne List ekme Liun Leu 0S lps
66. C e2loo 1less 52100 1259 52100 1259 S2300 0244 S2300 0244 WOLUME 13 A Figure 4 6 Volume List Display Screen Terminating the Volume List Display screen Do one of the following e Select Exit in File on the menu bar of the Volume List display screen e Click the close button of the system menu When the Volume List Display screen is terminated the window size column width of the list view and screen position on the Volume List Display screen being displayed are stored automatically The stored screen information takes effect when the Volume List Display screen is started next 127 Chapter 4 Functions of ReplicationControl 4 5 3 2 Selecting Disk Array Name i ae eee eee eee RRR RRR RRR RRR RRR RRR RRR RRR RRR RRR RRR RRR RRR RRR Ree Click the pull down button of disk array Selection Combo box on the screen of Volume List Display and select the target disk array The information of only the selected disk array is displayed Operation Procedure 1 Select the target disk array from the disk array Selection Combo box on the screen of Volume List Display 2 The volume information on the selected disk array is listed Fl Yolume List Display File View Operation Help Sil m Disk Array Subsystem ifar Drive Letter Path Name Disk Nope Hay Classification diski Iy _ _ disk SflOO0 1258 I diskg 12430070244 D244 Iy a 7 disk6 a Bee
67. Command Reference 112 Chapter 4 Functions of ReplicationControl 4 5 Volume List Creation Display The function to create and display the volume list associates logical disk information disk array side with system dependent information server side and displays the associated information Since it handles system dependent information the function on the Windows system is different from the function on the UNIX system On the Windows system operations are possible by using the GUI Graphical User Interface 4 5 1 Command Operations Windows On the Windows system by using the volume list creation and display function by means of the iSMvollist command it is possible to obtain and display drive letter HBT host adapter number bus number target ID and LUN logical unit number physical disk and logical disk names and associated OS type hereafter volume list of logical disks in the disk arrays The following is the description of the HBT e Host adapter number HBA This is the number for an interface card that connects a SCSI bus to the host system There are multiple buses in the host adapter e Bus number Bus This is the number for the path bus from the host adapter to a target SCSI device One path can handle multiple targets e Target ID Target ID This ID is used for identifying a device that is connected to the SCSI bus One ID is assigned to one disk array Business Server
68. Control e NEC Storage RemoteDataReplication 2 This manual is applicable to the program products of the following versions e NEC Storage Manager Ver3 3 e NEC Storage BaseProduct Ver3 3 e NEC Storage ReplicationControl Ver3 3 3 The NEC Storage Manager is referred to as iSM or Storage Manager in the text of this manual Also the NEC Storage series disk array subsystem is referred to as a disk array 4 The following descriptions in the text of this manual refer to the corresponding products Description Corresponding Product Storage Manager NEC Storage Manager DynamicDataReplication NEC Storage DynamicDataReplication 5 The following descriptions in the text of this manual refer to the corresponding manuals Description Corresponding Manual User s Manual UNIX NEC Storage Manager User s Manual UNIX IS001 NEC Storage Manager User s Manual IS004 Configuration Setting Tool User s NEC Storage Manager Configuration Setting Tool User s Manual GUI Manual GUI I1S007 Data Replication User s Manual NEC Storage Manager Data Replication User s Manual Installation and Operation Guide for Installation and Operation Guide for Windows IS016 Windows Data Replication Command Reference NEC Storage Manager Data Replication Command Reference IS021 Data Replication User s Manual Disaster NEC Storage Manager Data Replication User s Manual Recovery System Installation and Disaster Recovery System Installation
69. Control function correctly to the logical disk of paired MV or RV to be operated and the logical disk used as a control volume and then connect the logical disks to each server Prior to the replication operation on each server create the volume list and register the logical disks to be operated in the volume list in advance e When you use a control volume prepare a control volume for each server Itis not recommended that the same logical disk should be used as a control volume from multiple servers e The RAID format and capacity are not limited for the logical disk used as a control volume For the disk arrays with pool a logical disk with small capacity can be constructed for a control volume For constructing a control volume refer to the Configuration Setting Tool User s Manual GUI e When you define or change a control volume you need to update the volume list When you add or delete a disk array reconstruct a logical disk or change its setting or add or delete a logical disk that can be accessed from a server be sure to update the volume list to the latest state 108 Chapter 4 Functions of ReplicationControl 4 2 2 Operations Linked with iSM OPC UUUPOCUC ORCC OCCU C CUO CCC C CEC CUO CUCCCCOCOCC CUR CU CCC CECT OTe Operating ReplicationControl together with the replication management function of the 1SM enables you to operate and maintain the data replication function and to construct the environment such as pair
70. Empowered by Innovation N E lt NEL Storage NEC Storage Manager Data Replication Users Manual Function Guide _ E HE 6 cl e ie ETL TT TT ee IS015 9E NEC Corporation 2001 2004 No part of the contents of this book may be reproduced or transmitted in any form without permission of NEC Corporation The contents of this book may be modified without notice in the future Preface This manual describes how to use the data replication function provided by NEC Storage DynamicDataReplication Ver2 NEC Storage RemoteDataReplication Ver2 and NEC Storage ReplicationControl The data replication function consists of the replication volume creation function provided in a disk array and software to manage and operate it It utilizes replication volume to make business operation more effective Refer to the NEC Storage Manager Manual Guide IS901 for the overview of NEC Storage and the related manuals Refer to the NEC Storage Manager Data Replication User s Manual Disaster Recovery System Installation and Operation Guide IS027 for the usage of the remote data replication functions provided by NEC Storage RemoteDataReplication DisasterRecovery and NEC Storage ReplicationControl DisasterRecovery Remarks 1 This manual explains functions implemented by the following program products e NEC Storage Manager and NEC Storage BaseProduct e NEC Storage DynamicDataReplication e NEC Storage Replication
71. Only For the volume only read can be performed from the host Care should be taken to specify Read Only Refer to 2 6 RV Access Restriction When you click the Execute button the following message is displayed 02210 Restoring will be executed Is it OK to change contents of Mi Have both MY and RY been un mounted From the host Figure 3 20 Confirmation Screen Execution Conditions To perform Restore the following conditions must be satisfied 1 Gi Gii Gv v vi vii The target MV is recognized by Replication Management as the Replication target disk The target MV and RV are paired The activity state of the target pair is Separate but not Separate Execution The Semi synchronous Copy mode cannot be specified for pairs set in the same disk array The Semi synchronous Copy mode can be specified only for pairs set in different disk arrays The activity state of the pair of the specified MV and the paired RV is Separate The activity state of the pair of the specified MV and the paired upper MV is Separate The activity state of the pair of the specified RV and the paired lower RV is Separate viii The disk array where the specified MV and RV are stored is not in the Freeze state ix x x1 xii The disk array where the specified MV and RV are stored is monitored The MV and RV are unmounted from the host The specified MV is not registered in the AT group Separate is not
72. Storage4300 Synchronized Foreground Copy 0 KB 1 4 2 RV 0008h WN driveWN8 0007h driveWN7 Restore Storage4300 Synchronized Foreground Copy Not Ready 0 KB 1 4 2 MV 0009h WN driveWN9 000ah driveW Na Separate Storage4300 Forced Separation 0 KB 1 4 2 RV 000ah WN driveWNa 0009h driveWN9 Separate Storage4300 Forced Separation R W Permit 0 KB 1 4 2 IV 000bh WN driveWNb 4 2 MV 000ch WN driveWNc 000dh driveWNd Separate Storage43 00 Separated 0 KB 1 4 2 WN wosl ATG3 RV 000dh WN driveWNd 000ch driveWNc Separate Storage4300 Separated R W Permit 0 KB 1 4 2 92 Chapter 3 Replication Management 3 3 14 Save Pair Setting Information This function saves the pair setting information for the selected disk array to a file On the menu bar do the following e Click File and then click Save the Pair Setting Information Figure 3 49 shows an example of the Save Pair Setting Information screen Save the pair setting information Ei E4 Save in E DATA ck Ee Save as Ippe Text File twt Cancel Figure 3 49 Example of Save Pair Setting Information Screen 2 A file that stores pair setting information can be used for Replication Setting of New Setting which is one of configuration setting functions For details refer to the Configuration Setting Tool User s Manual GUI Pair List This section describes the pair list that is output to a file by th
73. Unpair perform Forced unpair for Suspended the volume in MV with the pair setting MV Freeze After execution of RV Forced Unpair perform Forced unpair for the volume in MV with the pair setting MV Force Unpaired Perform Forced Unpair for RV RV Separating Execute it again in the Separated state RV Replicate Execute it for a volume in the Separate state RV Restore Execute it for a volume in the Separate state RV Outside iSM After execution of MV Forced Unpair perform Forced unpair for Management the volume in RV with the pair setting RV Monitoring Suspended After execution of MV Forced Unpair perform Forced unpair for the volume in RV with the pair setting RV Freeze After execution of MV Forced Unpair perform Forced unpair for the volume in RV with the pair setting RV Force Unpaired Perform Forced Unpair for MV Have been registered to Execute it for a volume that is not registered in the AT group ATgroup ii Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog 79 Chapter 3 Replication Management Ne A If Forced Unpair is performed for either MV or RV the replication operations will not function properly because inconsistency occurs in the recognized states of MV and RV In this case perform Forced Unpair for MV or RV for which Unpair is not performed Figure 3 39 is displayed when MV is not under the iSM Figur
74. V Link Status link_ status Description disk number Physical disk number Id_name Logical disk name vaa VAA Volume Absolute Address type OS type volume name Mount point volume name path Drive letter or path name mounted on the NTFS volume folder accessed by users 169 Chapter 4 Functions of ReplicationControl attribute Logical disk attribute for the data replication and snapshot functions Displays only when the attr option is specified link_ status Link state of the link volume Displays only when the attr option is specified When the target volume is not a link volume link Connected hyphen appears unlink Unconnected On the UNIX system Displayed information Special file LD Name VAA Type Attribute LV Link Status special file name ld_ name vaa type attribute link_ status Description special file name Special file name ld name Logical disk name vaa VAA Volume Absolute Address type OS type attribute Logical disk attribute for the data replication and snapshot functions Displays only when the attr option is specified link_ status Link state of the link volume Displays only when the attr option is specified When the target volume is not a link volume hyphen appears link Connected unlink Unconnected Execution Conditions To display a specific volume name the following conditions must be satisfied i The target volume or the volume paired with the target v
75. Windows Instead of using this command the devices can be recognized by the Disk Management function of Windows Main Options The iSMrc scan command requires no options Displayed Information When the iSMre_scan command is executed the following message appears The iSMrc_scan command may take tens of seconds to complete the operation Start message Scan Start YYYY MM DD hh mm ss End message Scan Normal End YYYY MM DD hh mm ss Description YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second 189 Index A abnormal suspend essiensa 21 ACUI ICY Stal E E E 16 32 B ak OTOUNC Copy sareerronsiiire ranen iE A 17 68 background copy level cccccceeeccccceceeeeseeeeeees 98 179 background copy level change ccceccccceeeseeseeeeees 83 Dac kU 9 gener een ee ance eee A ieee ne ee eer 2 DOS TUMO te serach con pan ataneag hetennexeesuautannsaaattapemeanahecacns 113 PUSH O60 el caviccuatenta trai er E RN 6 USIHMC SS VOIUMIG Sp cxcsdeacasaintanrsar aidea aS l C N eS 35 change copy control state nnno000onnnnnsseseenenssee 106 Change to Background Copy cccceceeccccceceeseeseeeeeeees 68 CLASSINIC ALON ss csasessnnsisacvnautdvarswudsntusinaseaseusdacsewsseessawaens 126 command for displaying information on the replication TUMICHION s 5 tancsaccaniepensuwtassanantedsceesadscentnel i 178 configuration display area cccccceeecceceeeseeseeeeeeeeeees 28
76. able only for paired volumes in the same disk array iv Separated RV Status Specifies the operation in response to a write request from the host after Separate is complete Radio Button Description R W Permit Read and write can be performed for a separated RV is complete from the host Read Only Only read can be performed for a separated RV is complete from the host When you click the Execute button the following message is displayed iso ss 9 02603 2 Proceed the execution Has the updating of MY been completed Figure 3 17 Confirmation Screen Execution Conditions To perform Separate the following conditions must be satisfied RV cannot be reused until Separate is completed However it can be used for Separate completion i The target MV is recognized by Replication Management as the Replication target disk ii The target MV and RV are paired iii The target pair is not in the Restore Execution state iv The disk array where the specified MV and RV are stored is not in the Freeze state v The disk array where the specified MV and RV are stored is monitored vi The MV is unmounted from the host vii The specified MV is not registered in the AT group viii Separate is not being performed between the upper volume and the lower volume that are paired 56 Chapter 3 Replication Management a Figure 3 18 illustrates the execution conditions of Separate Each of 1 to viii in t
77. ad Only sep exec Separate execution NR Not Ready separated Separated state NA Not Available Note 1 For Separate immediate Read Write RW is set even during execution of Separate However keep the following operational influence in mind 1 Data is being copied from the MV into RV during Separate execution Therefore if the I O load on the RV is high I O performance on the MV side may lower Note 2 You can set Read Only RO to RV in the Replicate state Restore state or Separate execution In this case note the following 1 No update to MV should be done when RV is referred to in the Replicate state or Restore State 2 For updates to MV I O processing is done to the disk by the operating system control of the file system Even if the application has completed the update process to the disk it has not necessarily completed the update process to MV Reflection of the update to RV is processed in the disk array independent of the operating system Therefore RV cannot be referred to normally because it is not consistent as a volume You can use it if consistency is assured in the specific operation 20 Chapter 2 Data Replication Note 3 Note 4 2 7 If Read Only RO is set for RV for which Separate was completed keep the following operational notes in mind lt On the Windows system gt 1 If NTFS is used as a file system reference to the RV is disabled 2 If FAT16 FAT32 is used as a file s
78. anagement e e Execution Conditions To perform Freeze Defreeze the following conditions must be satisfied i The target disk array is recognized by Replication Management 1i The specified disk array is monitored When you perform Freeze no replication operations can be performed in the disk array Refer to 2 8 Freeze of Disk Arrays 3 3 11 Backgr You can change the priority of Background Copy of the disk array Operation Procedure Do one of the following to display the Background Copy Level Change screen e Select the disk array in the configuration display area click Operation on the menu bar of the Replication screen point to System Operation and then select Background Copy Level Change e Select the disk array in the configuration display area right click it and then select Background Copy Level Change Figure 3 45 shows an example of the Background Copy Level Change screen Background Copy Level Change Disk Array Name Storages4100 Background Copy Level Maximums Ser Background Copy priority bigger number is higher priority Execute Close Help Figure 3 45 Example of Background Copy Level Change Screen 83 Chapter 3 Replication Management isd i Background Copy Level Specifies the priority of copy operation when Background Copy is selected in Replicate and Restore A higher priority results in faster copying for reflecting difference For more i
79. and Operation Operation Guide Guide IS027 Snapshot User s Manual Function NEC Storage Manager Snapshot User s Manual Function Guide Guide IS030 6 Trademarks and registered trademarks e Microsoft and Windows are trademarks or registered trademarks of Microsoft Corporation in the United States and other countries e HP UX is a registered trademark of Hewlett Packard Co in the United States e UNIX is a registered trademark of The Open Group in the United States and other countries e VERITAS VxVM VxFS NetBackup VERITAS Volume Manager VERITAS File System and VERITAS NetBackup are trademarks or registered trademarks of VERITAS Software Corporation in the United States and other countries e Legato NetWorker is a registered trademark of Legato Systems Inc in the United States e Sun is a registered trademark of Sun Microsystems Inc in the United States and other countries e Solaris is a trademark or a registered trademark of Sun Microsystems Inc in the United States and other countries e Linux is a trademark or registered trademark of Mr Linus Torvalds in the United States and other countries e AIX is a trademark of IBM Corporation Other product names and company names etc are trademarks or registered trademarks of the associated companies 7 In this document matters to which careful attention needs to be paid will be described as follows Be sure to observe the contents If the indications are i
80. and write can be performed for a volume from the host Read Only Only read can be performed for a volume from the host Not Ready Operations for a volume cannot be operated from the host Not Available Operations for a volume cannot be operated from any host v Operation Time Display Displays the Start Time and End Time when operation for a volume is performed Displays the transition time at the forced separation or fault occurrence Displays the estimate of remaining time before copy completion during Replicate Restore or Separate However is displayed for the time if the disk array to which MV belongs is not recognized by replication management The time is displayed at the forced separation only on the RV side even if replication management does not recognize the disk array to which MV belongs Note The estimate of remaining time may not be correct because it changes according to the monitoring timing the units the status of lines and so on vi Differential Quantity of Volume Displays remaining amount transfer rate during synchronization 86 Chapter 3 Replication Management Connection Display of Paired Volumes Connections of volumes are displayed as pipes as shown below During copy operation the color of the original disk moves through the pipe e For DynamicDataReplication Replicate is executed m Restore is executed lt lt a Separate is executed eS e Fo
81. apter 3 Replication Management Have Unpaired Execute it for a volume with the pair setting Separate State Execute it for a volume in the Replicate state or Restore state Already Background Copy Execute it for a volume in Foreground Copy State Freeze Defreeze the Data Replication function and execute it again MV Monitoring Suspended Change the disk array of MV to the Monitored state and execute it again RV Monitoring Suspended Change the disk array of RV to the Monitored state and execute it MV Force Unpaired Perform Forced Unpair for RV RV Force Unpaired Perform Forced Unpair for MV RV Forced Separate Execute it for a volume in the Synchronous state MV Outside iSM Execute it for a pair under the iSM management Management All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Have been registered to Execute it for a pair that is not registered in the AT group ATgroup ii Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog When you click the Execute button the following message is displayed a 02600 Will you execute Figure 3 27 Confirmation Screen Execution Conditions To perform changes to Background Copy the following conditions must be satisfied i The target MV and RV are reco
82. arate the replication volume RV Resume the task after separation is complete 3 Use the separated replication volume RV to perform backup and the task in parallel After backup is complete reconnect the replication volume RV Reconnection takes only a short time because only updated parts in the master volume are reflected to the replication volume RV Using the Replication Volume as Disk Backup In this method the replication volume is used as backup of the master volume In this case you do not have to manage the existing magnetic tapes because they are not used as storage media When the restoration instruction is complete you can use the backup data even if the actual data replication has not been completed If data to be accessed is not restored to the master volume the data in the replication volume is accessed The user does not have to be aware of using which of the master volume or replication volume This reduces the data restoration time substantially Connect n n nN n n S N Separate a Connect A Replication 2 RV2 Figure 1 3 Using Replication Volume as Backup eplication 1 RV1 Wi eplication 2 RV2 The procedure for using a replication volume for backup is described below 1 Connect the replication volume 1 RV1 to the master volume 2 Suspend the production task and separate the replication volume 1 RV1 Resume the task after connecting the repl
83. ata replication function is frozen Indicates that copy operation is suspended Abnormal Suspend Indicates that copy is forcibly suspended in the disk array due to a copy fault x1 Copy Mode The copy control state in the synchronous state during Replicate Restore is displayed Synchronous This mode completes copying to RV within the processing time of the command for writing to MV Semi synchronous This mode stops the command for writing to MV and immediately performs copying to RV Background Copy This mode performs copying to RV asynchronously after stopping the command for writing to MV xii RV Mode RV access restrictions are displayed For more information refer to 2 6 RV Access Restriction Indicates that the volume can be read and written from the host Read Only Indicates that the volume can be only read from the host Not Ready Indicates that the volume cannot be operated from the host Not Available Indicates that the volume cannot be operated from any host xiii Differential Quantity of Volume Indicates the amount of difference after Separate including the state right after pair setting and the amount of difference the remaining amount during synchronous execution Amount of difference may not change 1f I O load is too heavy If a link failure occurs amount of difference may not change In this case refer to 2 2 2 2 Link fault in the Data Replication User s Manual Insta
84. ate Restored Execute it for a volume in the Separate state Being replicated by Replicate is being executed in another layer Execute it again after other pair Separate is complete Being restored by other Restore is being executed in another layer Execute it again after pair Separate is complete Freeze De freeze the Data Replication function and execute it again Being separated by other Separate is being executed in another layer Execute it again after pair Separate is complete MV Monitoring Change the disk array of MV to the Monitored state and execute it Suspended again RV Monitoring Change the disk array of RV to the Monitored state and execute it Suspended again MV Force Unpaired Perform Forced Unpair for RV RV Force Unpaired Perform Forced Unpair for MV MV Outside iSM Execute it for a pair under the iSM management Management All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Have been registered to Execute it for a pair that is not registered in the AT group AT group Snapshotting Execute it for a pair that is not operating snapshot ii Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog iii Range Normally Only Difference is selected which copies only the difference area of MV and RV
85. ated including the Separated state accompanied by completion of Restore protect YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second disk number Physical disk number ld name Logical disk name type OS type volume name Mount point volume name path Drive letter or path name mounted on the NTFS volume folder accessed by users Waiting The character is dynamically updated until Wait is completed On the UNIX system Execution message Waiting End message activity state Normal End YYYY MM DD hh mm ss MV disk_number Id name type RV disk_number ld_ name type Description If you do not want the execution message to appear change the setting of the RPL WAITMSG environment variable For information about environment variables refer to the Data Replication Command Reference activity state Activity State of the paired volumes for which the wait command is completed Replicate Synchronous State rpl sync Restore Synchronous State rst sync or rst sync protect Separate Separated YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second special file name Special file name ld name Logical disk name type OS type Waiting The character is dynamically updated until Wait is completed 163 Chapter 4 Functions of ReplicationControl Execution Conditions To execute the wait command the following conditions must be satisfied i The target MV a
86. ble Information Measure ee MV Monitoring Change the disk array of MV to the Monitored state and execute it Suspended again MV Force Unpaired Perform Forced Unpair for RV RV Force Unpaired Perform Forced Unpair for MV RV Forced Separate Execute it for a volume in the Synchronous state MV Outside iSM Execute it for a pair under the iSM management Management All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Have been registered to Execute it for a pair that is not registered in the AT group ATgroup ii Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog Resume Copy The Suspend Copy or Background Copy state is changed to the Foreground Copy state Do one of the following to display the Resume Copy screen e Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen point to Volume Operation and then select Resume Copy e Right click in the Replication Information screen point to Volume Operation and then select Resume Copy 64 Chapter 3 Replication Management SSSS ____ __ E EE _ Figure 3 23 shows an example of the Resume Copy screen Resume Copy x Not selected Replicate Sto Unexecutab
87. cal Disk Name M Separate 7100 vang 0l Cannot be i Unexecutable Restore Restore oT ALAN DDR myvu 1l selected Separate 1289 0889 EXP L 0D Notselecied Separate 1Z59 DELL REFAM 00 E ii ie Su ar y t Details Force Unpair AN Because this command if executed for HY and BY individually i any part is out af this iSM control then Forced Unpair will be executed only on one part In this case it will show in unexecutable reason Choose pairis which you want to execute from list then click Execute button It 15 possible that multiple pairs are chosen and executed Close Help Figure 3 38 Example of Forced Unpair Screen From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot be selected 78 Chapter 3 Replication Management i Selected Volume List Displays the list of the pair MV RV information selected in the Replication Information screen Volumes whose Execution Result is Unexecutable cannot be selected because they do not satisfy the execution conditions For the Unexecutable volumes do the following by referring to the Unexecutable Information MV Outside 1SM After execution of RV Forced Unpair perform Forced unpair for Management the volume in MV with the pair setting MV Monitoring After execution of RV Forced
88. cccecccecceeeeeeeeeeeeees 181 LOT a AE EE SEE E A IA IEE ATE T 181 forced ks op 0 211 on ee ene 16 74 TOR CC UND AI senai 78 foreground COPY ccccccccssseeseecececesseeeseceeeeseeaseeeeeeeeeaas 17 G ods eee ee ee en ve 22 82 98 179 G GUI operations WindOWS cceeccceceeeeeeeeeeeeeeeees 124 H IIIS Pi osc EEI T EE E A E A E 113 ME Teee E E E E 113 host adapter number cccccecccccceceaeeseeeeeeeeeseeaees 113 I WO issuing WAT 25 cucrsccecesedundelascnecnebtondapendncktesscondiuscst 108 interval to obtain disk array information 95 DS IMITG AM AY 100 sedro aE 106 iSMre CHAN GS sc2c 2 cctetendietiveseceeceenccisteneeces 104 106 157 PSIG MSh esere as 104 106 181 ISMre In St scinni 104 106 172 ISME MOUN eee ee eee een 104 106 183 PME OF Gane eee Ree mee ee een 104 106 ISME GUEI eerren aaa 104 106 165 ISMre replicate iiinncenscosnenesosscaessonsseeccoseaanren 104 106 140 ISMIc TEStOTE 40cccceecccceseeneseeeccenesseeees 104 106 151 ISME PSC AU otc re tse sciesaacetacececoseaneeancuenseet 104 106 189 Mre BENSE etara ae 104 106 169 iSMre SOMA ANS cious siiaene tothe eeeiescannccdeeserees 104 106 146 iSMrce signature 00 eee cece ce eeeeeeeeeeeeeeeeeee es 104 106 187 ISMrc UMOUNL eee cece ce eeeeeeeeeeeeeeeenee es 104 106 185 DIVING Wall ndanani a 104 106 161 PMV Oll S arne nee en ete ce Nee tceee 104 106 113 119 L MOG gee ogee nesses s
89. cece cece eee eeeeeeeeeees 110 state Synchronized essiens ae 1315 state ansion S ocisvasanndsatsadasdanslivesaentannactwndnstsamroondiavnedss 12 Storage Mai CF aac Se ccecsconasscacncaedaseneeeraennccsdeeneawseteneeecees 7 subsystem absolute address ccccceeccceceeeeesseeeeeeees 98 SUES 4c 0 6 eae ee een sae ae ee eee ear eee eee 17 Suspend COPY erosie roire EREE 63 Sync Execution v scccccecsecesacsadsecededindastecedecie eeeeedcdeecenceet 13 192 Syne 6 eee nee ee ee eee 13 15 16 33 synchronous COPY mode ccccccceceeeeseeeeceeeeeeeeeeeeeeees 17 T 16 oy OU D E A EE E E ne A O E 113 test environment SettiINg ce eeeeccccceceeseseeeeeeeeeeeeeeees 4 to display the replication State cceeeceeceeeeee eens 165 U UA OWN escheat ss dete cea E E 185 MITA E EE ESE 46 175 updating display information cccccceeccceceeeee eee 134 yV ne A S E IE A TINETA 111 view hide status bar seeeeeensssnssessesseesseresrsessssrrsses 133 view hide toolbar ccc cceccccescceeceeescceeeceesceeeeeuees 133 volume ATO peti scicccetereaetieewnctheenila snes 31 volume classification eeseenssesssesesesseeseeeseesssesserssrreens 8 volume definition seeeesesesnsesnssesssesseessssssesesessersses 125 volume format seeesesesesnssesssesseeresrreressesssessererrresrees 31 volume group NAME siseriiisiiiirsirisnieressi irdi 111 volde Hs iesraies EAr 113 119 volume list creation displa
90. cified the system displays information only associated with the specified logical disk de option Displays information only associated with specified disk arrays sorted by using logical disk name as the key If a specific logical disk name is specified the system displays information only associated with the specified logical disk name dd option Displays information only associated with specified disk arrays sorted by using drive name as the key Ifa specific drive letter or a path name of the NTFS folder is specified the system displays information only associated with the specified drive letter or path name of the NTFS folder dp option Displays information only associated with specified disk arrays sorted by using physical disk number as the key Ifa specific physical disk number is specified the system displays information only associated with the specified physical disk dh option Displays information only associated with specified disk arrays sorted by using HBT and LUN as the key If HBT is specified the system displays information only associated with the specified HBT If LUN is specified the system displays information only associated with the specified HBT and LUN a option Displays information associated with all logical disks al option Displays information only associated with specified logical disks ae option Displays information only associated with specified logical disk names 114 Chapter 4 Functions of R
91. conducting a joint operation with the iSM replication management Figure 4 31 shows execution conditions for displaying the replication state 167 Chapter 4 Functions of ReplicationControl Taraek Pale i Pair setting algerra ii MV or RV has been registered in the volume list The volume list is not being created or updated The disk is not a dynamic disk or GPT formatted partition disk Figure 4 31 Displaying Replication State 168 Chapter 4 Functions of ReplicationControl 4 6 7 Specific Volume Name Display Command To carry out a specific volume name display the isMrc_sense command is used The volume to be specified must be registered in the volume list created by 1iSMvollist Main Options The iSMrc_sense command enables the specification of the following options 1 Specifying volumes Specify the target volume e Specify volumes vol volume volflg mv flg Specifies the volume and volume type For information about volume types refer to 4 3 Volume Types 2 Displaying attribute information attr Displays the logical disk attributes and the link state of the link volume LV for the data replication and snapshot functions Displayed Information The iSMrc_sense command displays the following information On the Windows system Displayed information Disk No disk_number LD Name Id name VAA vaa Type type Volume Name volume_name Path path Attribute attribute L
92. connection state of the volume ccccceeeeeeeeeeeeees 85 control volume 107 115 116 120 121 134 copy comtal Stiler 17 34 copy control state change c cc eeececcceee eee eeees 104 157 copy control state change command ccceeee 157 com PAE eee E E EE 21 copy fault hc ee niii 101 Con 11 6 lt n ee eee ee meee ee eee eee 34 COPY DEFlOTIMANCS ccc toc odntres cece targuectaiadecenseteceteceeecexte 19 create update the volume list eee 119 129 CSV output of information list ec eeeeeeeeeees 130 CSV output of replication screen information 91 D data replication ccccccccccceeseseeceeeceseeeeeeeeeeesseeaeees l Gail Ads O nmedeestaranee 2 DER sei nscsirau ens psaniore estes aarearrans Ratatans aa teen ahucddea anatase sanitaire 1 defining control VOlUME cc cececccce cess eseeeeeeeeeees 134 SB E A et cot E N E T E E AT 82 SCS SCN eaea E TEE 189 l EI EEE I PE TEE T AEE PEE E ET ACA PEE EE 111 dilierenial Map ceresna 97 179 differential volume s2cccc1ncccncueeiazerencceassseasnndtersczeunadenceces 34 DIRECT saene E A 108 direct operation for a disk array cccccceeeeeeeeeeeeees 106 director number cece ecceecceeceeeseeeeees 37 99 180 190 MEKA G2 ghee eee eee eee mee Renn A 33 disk armay ICON eee eee ee eee 29 disk array information display ccccccsseeees 104 106 disk array link information screen
93. cted when the following disk arrays specified in the configuration display area e Disk arrays not supporting RemoteDataReplication and RemoteDataReplication Disaster Recovery e Disk arrays without RemoteDataReplication and RemoteDataReplication Disaster Recovery 29 Chapter 3 Replication Management Replication Information license e Unmanaged disk arrays 3 2 3 Replication Information Screen When click the Replication Information tab in the information list display area the volume information of the volumes in the selected disk array is displayed refer to Figure 3 3 Example of Replication Information Screen MV and RV are displayed in one line respectively a total of two lines for a pair and IV is displayed in one line If pair setting is performed for volumes the states of the volumes are displayed in two lines for one pair so as to check the states of MV and RV IV is displayed in one line To perform sort click the item name by which you want to sort You can drag amp drop an item to permute the order of the items When pair setting and unpairing are performed volume information is updated according to the order of the last sort Disk Array LINE Information AT group Information Classification OS Type Logical Disk Name Pair Disk Name My d He j k H201 jgdlk Hsuz ame RY oooLn Ad Hsuz Ooooh HSuU1 aie HY jzk Ad s TOETO MSU OnoOOs3h STORYO MSU4 RY Ooosh Ad s TOETO MSU4 jzk s TOETO r MSU ai
94. d with the iSM pay attention to the following e In the operations linked with the iSM replication is operated in the asynchronous state with operations To perform replication operation linked with operations be sure to install ReplicationControl on each server and perform operation linked with operations of each server because operation of a file system needs to be performed on the business server and the backup server and data consistency needs to be secured e To perform replication and pairing the state monitoring information of the disk array held by the iSM needs to be in the latest state Therefore set a short update time interval of the state monitoring information held by the iSM or update the information of the disk array and logical disk for operation using the cr option of the iSMrce_ Idlist command For how to specify the environment settings such as update time interval of state monitoring information held by the iSM refer to the User s Manual or the User s Manual UNIX 110 Chapter 4 Functions of ReplicationControl 4 3 Volume Types Types of volumes that are specified as operation targets for data replication commands are as follows Table 4 3 shows the list of volume types Table 4 3 List of Volume Types E i Target System Type Description Identifier Lonaldikeome Specifies a logical disk name set on the disk id array side Mount point volume Specifies a mount point volume name assigned name to th
95. disk is not allowed Windows only xiii The iSM dedicated special file is not being created HP UX version UNIX only The above execution conditions 11 x1 xi1 and xiii are not applicable when conducting a joint operation with the iSM replication management 177 Chapter 4 Functions of ReplicationControl 4 8 Disk Array Operations The disk array operation command provides the function of displaying information on the replication function of a disk array 4 8 1 Command for Displaying Information on the Replication Function To display information on the replication function of a disk array use the iSMrc_arrayinfo command The iSMrc_arrayinfo command obtains and displays information related to the replication function of the disk array recognized by the system Main Options The following options can be used with the iSMrce_arrayinfo command to display information related to the replication function e Displaying set information dinfo Obtains and displays the disk array settings related to the replication function e Displaying link information linfo Obtains and displays how disk arrays having the RemoteDataReplication function are connected each other and the status of link paths 178 Chapter 4 Functions of ReplicationControl Displayed Information 1 When the dinfo option is specified Information on the replication function of a disk array is displayed as shown below Disk Array Name
96. disk numbers in the Volume List file x Volume Definition Displays the identification information of control volume definition xi LUN Displays logical unit numbers in the Volume List file xii LDN Displays logical disk numbers in the Volume List file xiii LD Name Displays logical disk names in the Volume List file 125 Chapter 4 Functions of ReplicationControl xiv Disk Array Displays disk array names in the Volume List file xv Classification Displays the type volume attribute of volumes regarding data replication and snapshot by obtaining from a disk array The information items v1 to xiv above are displayed by obtaining from the volume list however the information items iv and xv are displayed by obtaining from a disk array Menu Item List This section describes the items on the menu bar of the Volume List Display screen e File menu Create Update Volume List 4 5 3 3 Create Update the Volume List CSV Output of Information List 4 5 3 4 CSV Output of Information List File wiew Operation Help Create Update volume List CSV Output of Information List Properties 4 5 3 5 Displaying Property Information of Properties Volume List Exit Alt F4 Exit 4 5 3 1 Starting Terminating Volume List Display e View menu view Operation Help Toolbar v Toolbar 4 5 3 6 View Hide Toolbar Status Bar w Status B atatus bar 4 5 3 7 View Hide Status Bar
97. e You can specify the Copy Control state in Restore Execution and the Synchronous state e Synchronous Copy cpmode sync Changes the Copy Control state to the Synchronous Copy mode e Semi synchronous Copy cpmode semi Changes the Copy Control state to the Semi synchronous Copy mode This can be specified for paired volumes in different disk arrays e Background Copy cpmode bg Changes the Copy Control state to the Background Copy state 4 Specifying the access restrictions for RV rvacc You can specify the access restrictions for RV in Restore Execution or when Restore 1s complete e Not Ready rvacc nr Switches to the Not Ready state Operations cannot be performed for the volume from the system e Read Only rvacc ro For the volume only Read from the system can be performed Pay careful attention when you specify Ready Only rvacc ro for the RV access restrictions For details refer to 2 6 RV Access Restriction 5 Specifying the wait for copy completion wait nowait The system can wait for completion of the command after Restore until the Synchronous state e Wait Specified wait second If a value is specified in second the monitoring time interval of the disk array becomes the specified value The available range is from 1 through 30 seconds integer If the value is omitted the RPL WATCHDEYV setting in the replication operation option setting file is used for Windows while the setting of environment
98. e 3 40 is displayed when RV is not under the iSM iSM 02208 Cannot issue the command to Mw Ts it OK to issue only to RY Yes Issue only to Ry Mo Skip Cancel Stop cme Figure 3 39 Warning Screen for MV without under iSM ISH 02203 Cannot issue the command to RW Ts it OK to issue only to MY Yes Issue only to My No Skip Cancel Stop cme Figure 3 40 Warning Screen for RV without under iSM When you click the Yes button the following message is displayed isM 2 02600 Will you execute Figure 3 41 Confirmation Screen 80 Chapter 3 Replication Management Execution Conditions To perform Forced Unpair the following conditions must be satisfied i The target volume is recognized by Replication Management as the Replication target disk ii The target MV and RV are paired or one of them is forcibly unpaired ii1 The target pair is in the Separated or Forced Separate state iv The disk array where the specified MV and RV are stored is not in the Freeze state v The disk array where the specified volume is stored is monitored vi The specified MV or RV is not registered in the AT group Figure 3 42 shows the execution conditions for Forced Unpair Each of 1 to vi in this figure correspond to the respective number above Replication Target Disk ii Pair Setting or one of them is forcibly unpaired iii Separated or Forced Separate state
99. e Change RY Mode Logical Disk Name Number ot OS APA SMS CH OOlfZh Replicate Ready i Separate ne Permit rplidd 7 Os4d4h Separate B W Permit ENEE wk O00e OO07 Of ch Replicate Not Ready ENEE wk O0O0f OO07 OS2dh Unexecutable ENEE oracleOOO oOf34h Change BY access restriction Please select setting value from the following list BY Setting iii T r Wot Ready c Ress car Net available Choose pairis which you want to execute from list then click Execute button It is possible that multiple pairs are chosen and executed Execute Close Help Figure 3 29 Example of RV Mode Change Screen From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot be selected 71 Chapter 3 Replication Management i Selected Volume List Displays the list of the pair MV RV information selected in the Replication Information screen Volumes whose Execution Result is Unexecutable cannot be selected because they do not satisfy the execution conditions For the Unexecutable volumes do the following by referring to the Unexecutable Information Have Unpaired Execute it for a volume with the pair setting Defreeze the Data Replication function and execute it again RV Outside 1SM Execute it for a pair under the iSM management
100. e MY 004k Ad HSUS ooosh Hsu6 E EY oooSh Ad Hse noo4h HSUS ga MY ooou 6h Ad Hsu OOoOoOvh HSUS Ea EY jgh d HSUS j Hsu aie MY OO0sh Ad HST 0da HSTTA 3 EV Ooooh Ad HSU OoOOUsh HsSu3 eg Eve OO0sh Ad HUB oo0bh HSUC E3 RY 0 bk Ad HSucC OOO ak HSUB eg Eve jch Ad HSup jgid dh HSUE ay RY 00d dh Ad HSUE oO0ch HSU ga MY ooO0eh Ad MSIF ooo Ek HSUG E EY jad fh Ad HSUG nO0eh HSUF ae MY oO010h Ad HSUH oOllh HsuJ E EY OOllh Ad HSuJ OO1LO0h HUH ae MY lzh Ad HSUF OOlsh HSUL ay EY lh d HSUL OOlZh HSU g Eve j l4kh Ad HSU jalh HSUN am RY oO15h Ad HSU 0l4kh HSUM g Be oO1l6h Ad HSUF HOLT MSU ie Working 2 Figure 3 3 Example of Replication Information Screen The Replication Information screen displays information regarding the following items 30 Chapter 3 Replication Management i Classification The volume types volume attributes are displayed i Green MV Indicates Master Volume which is the volume of replication origin A Light Blue RV Indicates Replication Volume which is the volume of replication target E3 White IV Indicates Isolated Volume and is the volume except the replication object IV becomes MV or RV by operating pair setting Indicates the volume on which a copy fault occurs When the snapshot function is used the base volume BV used by snapshot is also displayed For snapshot refer to the Snapshot User s Manual Function Guide bo i Green MV MV BV having the BV attr
101. e es Bn eee te Sa ees es os Bee See Pen nn Snes Nee ok Berne Seon a eC One Tener Eee ee Tone 74 3 3 9 Jae a 08 OE 0 0 2111 EEE ee neem EOE nT nectar ene TEES nen A Nn NN Re Sa Omen eR Ree ee N 78 so RCC He DSTA rag cess ttsceconctusa inten E E E pea sisucseneneededsersenenauseees 82 Sor Backoround Copy Level Chante ecsccsesccccc ses ccesccccsetentessed aces ee ees 83 er AE st 01516 8 Ole e eee me ere E N eee ene een eres ener E E ee ere ee meen en ene ee re ree 85 3 3 13 CSV Output of Information List Display c 2 220 2002cc0s000 0200600200024 0502 04005 lt 420025 lt 5400404e02 05 a4e54 lt 2d0ees42 lt e lt 0enesbenseaiatess 91 3314 Save Pair Setting Informatio cass et acecs te nccs cet aden tenacs acd aen snes ae dees ones 93 Se lle Lorone ol Gt Leen nee eee Ee Nn ene Ren E EE fee etree ete oe ee eee ee ee 95 eNO TROIS Zatcccerspeceeocrctaece aeceisaeconciese E sceseausouces sureceeesuesesenats E E E 95 37 Recor Scree nior maose suc oem T mice ees acemcaen enact aseweo O A R nee 96 sale Depay DBEkAmaY Proper ES soser E RMN EERO PRE nD nD ROE Ce Cen eee oe ete ae 97 l9 Display Link Properti GS ae en ee rr rn ne rem ren ne Orr nner een eee 98 Doo Diplay Com atc cd cesses ade sss ce ae cence des tense ae sees eee 101 Chapter 4 Functions of ReplicationControl eeececooossssssssseeecceccccosssssseseeeccoccoosssssssseeecossssssssseceeecoccosssssssseseseeeossssossso 103 4 1 Command L SG Eep E T meen eaueacetwieseteambes 104 4 2 Doa On TYDE EE
102. e output when a drive letter or an NTFS folder name is set Execution Conditions To perform Mount the following conditions must be satisfied i The target volume is registered in the volume list ii The target volume is in the Read Write available state or is a volume changed to the Not Ready state when the iSMrc umount command unmounts the volume iii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed 184 Chapter 4 Functions of ReplicationControl 49 3 Volume Unmount Command To unmount a volume the iSMrc_ umount command is used The iSMrc_ umount command cancels the association of volumes partitions with file systems Unmounting a volume flushes the file system buffer of the specified volume thoroughly When access is made to the file system of the unmounted volume the Windows system mounts the volume automatically When the Windows system mounts a volume automatically unmount operation is disabled Note that the file system may be damaged if unintended data is left in the file system buffer due to this operation To suppress an unexpected automatic mount use the offline option When the offline option is specified the mount point drive letter or NTFS folder name set in the target volume is deleted automatically and the volume is unmounted with the automatic mount suppressed At this time Windows 2000 changes the access restriction of the disk logical disk to the Not Ready state
103. e replication management function The AT group information can also be output to a CSV file For details refer to the Data Replication User s Manual Disaster Recovery System Installation and Operation Guide Pair list format rules i The file is a text file in the ASCII character format The default file name is pairlist txt ii Text from a semicolon or sharp to the end of the line is regarded as a comment iii There is a distinction between upper and lower case characters iv Data is described in the following format MV DiskArrayName MV OSType MV ExVolName RV DiskArrayName RV OSType RV ExVolName 93 Chapter 3 Replication Management Table 3 3 Pair List Format Rules Item ae Pair Name List Identifier of this file A space between characters is a half size MV DiskArrayName_ Name of the disk array where the Master Volume MV belongs The maximum number of characters is 32 MV OSType OS type of MV 4 MV ExVolIName Logical disk name of MV The maximum number of characters is 24 RV DiskArrayName Name of the disk array where the Replication Volume RV belongs The maximum number of characters is 32 a RV OSType OS type of RV RV ExVolName Logical disk name of RV aa The maximum number of characters is 24 ATgroupName AT group name The maximum number of characters is 32 DiskArrayName Name of the disk array to which the AT group belongs _
104. e volume by the system NTFS folder name Specifies an NTFS folder name path name Specifies a drive letter for the volume Specifies a special file name assigned to the Special Hie name disk logical disk by the system Vome ttrounnime Specifies a name of the LVM s volume group v ERMD that includes the disk logical disk amp E EET Specifies a name of the VxVM s disk group Sroup that includes the disk logical disk for the volume O Targeted Not Targeted Notes 1 The identifier is a character string that indicates the volume type and is used in the following cases e When specifying a volume type by a replication operation command option mvflg rvflg or volflg e When specifying a volume type by a pair specification MV type or RV type in the replication operation file 2 To use the volume group the LVM environment is necessary 3 To use the disk group the VxVM environment is necessary 4 On the UNIX system Solaris version to specify a special file name dev rdsk c t d s remove the special file name s slice partition number s 5 The pair setting and unpairing operation iSMrc_ pair command is performed on a single logical disk therefore it is not possible to specify an LVM volume group or a VxVM disk group 6 To conduct joint operation with the replication management controlling the I O issuance to disk arrays via the 1SM an applicable volume type is a logical disk name only 111 C
105. e when the volume list is created or updated host_name Host name of the server owning the volume list disk array number Total number of disk arrays in the volume list volume number Total number of volume information items in the volume list vi When the ax option is specified Disk array information information on correspondence of logical disks and property information of the volume list are listed as shown below Volume List iSMvollist Version X X XXX Date YYYY MM DD HH MM SS Disk Array List Disk Array Name Number of Drives disk_array_name number Volume List LDN LD Name VAA OS Type HBT LUN Disk No Disk Array Volume Name Path Idn Id name vaa type hbt lun disk num disk_array_name volume _name path Property of Volume List File Version version Created yyyy mm dd hh mm ss Owner Host Name host_name 117 Disk Array Volume Information Description X X XXX YYYY MM DD HH MM SS disk array name number Idn Id_ name vaa type hbt lun disk num volume_name path version yyyy mm dd hh mm ss host_name disk array number volume_number Chapter 4 Functions of ReplicationControl disk_array_number volume_number Version information on the executed 1SMvollist command Execution date of the iSMvollist command Disk array name Number of logical disk information volume information items for each disk array registered in the volume list Logica
106. ecified value The available range is from 1 through 30 seconds integer If the value is omitted the RPL WATCHDEYV setting in the replication operation option setting file is used for Windows while the setting of environment variable RPL_ WATCHDEYV is used for UNIX For details on operational settings refer to the Data Replication Command Reference 146 Chapter 4 Functions of ReplicationControl e No Wait nowait Performs only a Separate start instruction and terminates the command You can check the termination of the command by the iSMrc query or iSMrc wait command 4 Forced Separate force If a fault occurs in the connection between disk arrays and the normal Separate cannot be performed for MV and RV you can specify the force option to instruct Separate to MV and RV separately You can specify one of the following as a Forced Separate target e Perform Forced Separate for both MV and RV force all e Perform Forced Separate only for MV force mv e Perform Forced Separate only for RV force rv When performing Forced Separate note the following e If MV and RV are in the same system the all is normally specified e Forced Separate by specifying MV or RV is used when MV and RV are in the different systems e When Forced Separate is performed by specifying MV or RV after the problem has been solved Forced Separate must be performed by specifying RV or MV in the other system e If Forced Unpai
107. ects E A EEN screamed ates 111 MM AE actrees ara hee tae eee aie oe 35 link disk array NAM erse 37 99 Link number oo cece eee cc eccceeccesccesccesceesceesceessenes 36 180 link path numbe ccccccccccccceceeseseeceeeeesseeeseeeeeeeaes 99 MAKE POPETI oh eee Renee E na ere erin Teme 98 logical disk information display 104 106 172 logical disk information display command 172 logical disk NAMEC ce ceeccccceceeeseeeeeeeeeeeeeaeeees 32 111 logical disk number cceecccccccceeseeeeeeeeeeeeeeeeeeeeeeeeeas 32 logical unit MINOT ese eee 113 LUN er E E asec 113 M MAN AS CHICUL Servei eaa EE 6 MANA GT Eei E N ences 109 Haster VOLUME eei ce ene aeeanenacecostenrdeeeceseese l maximum number of RV Setting eeccc cece eens 98 maximum number of RVs that can be set 0 179 Aa tc cise E E E A eeamens eon A T 111 DEED o Meoyend tne ate temeaus Sade riaetnatotsacaandet 39 mount point volume name eee ccc ceceeeeeeeeeeeeeeees 111 DIN E EE l dO RAO EEE T EI ences E E 111 N TN e E E E O E ET 20 Not Available sccsccccececotesexccaiizeetesstechecidsegeieeeeee ees 20 SEE h OEE I P AE O AE 20 notes on operal iON cites s csaccasceesceeerescanansdcedeedadsakievostce 26 TINIE EE EN E E EEA EA NA TE AA A 20 NTES Tolder DAME secccsrenerriss ni enr iE EAEN IESE 111 191 O Operation authorization ecc cece eeseeeeeccceceeeeseeeeeeeeeeees 24 operation message
108. ed special file is not being created HP UX version UNIX only The above execution conditions except for 1 and 11 are not applicable when conducting a joint operation with the iSM replication management 174 Chapter 4 Functions of ReplicationControl 4 7 2 Pair Unpair Command To execute pair setting or unpair the 1iSMrc_pair command is used The iSMrc_pair command sets and unpairs specified paired MV and RV Ifa failure occurred on the MV side or RV side disk array and the regular unpairing becomes impossible Forced Unpair can be performed Main Options The iSMrc pair command enables the specification of the following option regarding pair setting and unpairing 1 Specifying pair setting pair or unpairing unpair Specify whether to set a pair or unpair e Specify a pair pair Specifies pair setting for specified paired volumes e Unpair unpair Unpair the specified paired volumes 2 Specifying paired volumes Specify MV and RV volumes e Specify MV mv volume mvflg mv flg Specifies the volume and volume type of MV e Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV The pair setting and canceling operation GSMrc_pair command is performed on a single logical disk therefore it is not possible to specify an LVM volume group or a VxVM disk group as a volume For details of the volume types refer to 4 3 Volume Types On the Windows system when a speci
109. ed volumes Specify MV and RV volumes e Specify MV mv volume mvflg mv flg Specifies the volume and volume type of MV e Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV For information about volume types refer to 4 3 Volume Types On the Windows system when a specific partition drive letter is specified for a volume consisting of multiple partitions all partitions in the volume become operation targets therefore the default setting does not allow the multiple partitions to be operated To perform operations for a volume consisting of multiple partitions you need to change the default setting For information about the replication operation option setting file refer to the Data Replication Command Reference Specifying the access restrictions to RV after Separate rvacc You can specify the access restrictions to RV after Separate e Read Write rvacc rw Reference and update can be performed for RV e Read Only rvacc ro Only reference can be performed for RV Pay careful attention when you specify Ready Only rvacc ro for the RV access restrictions For details refer to 2 6 RV Access Restriction Specifying the wait for Separate completion wait nowait The system can wait for the command end after Separate until Separate 1s complete e Wait Specified wait second If a value is specified in second the monitoring time interval of the disk array becomes the sp
110. een Light blue Blue Yellow PV Ist Layer 2nd Layer 3rd Layer 88 Chapter 3 Replication Management not managed In the pair connected by RemoteDataReplication the remote disk array is not managed by 1SM or in a monitoring stop may be displayed like the above Unpaired In the pair connected by RemoteDataReplication when Remote Volume cannot be recognized from the host computer which Local Volume has connected by having performed Forced Unpair to Remote Volume etc it may display like the above Case of the 2nd layer or more layer pair composition when Forced Unpair is performed to the volume of the Ist layer or the 2nd layer the volume of upper layers may not be displayed Ne Copy Progress Displays the progress of Replicate Restore etc as the change in volume Example of Display 1 Replicate Replicate Execution Sal Os 2538 a 1001258 Ol2eh 200000004051 7654012E Ol2th 200000004C3 1Tas4012F 661 37 WIBIO SVB DynarucDatakepleatiorn Turns to the same color when synchronized Replicate is complete a41001258 2 1001258 COOLA WH 25S DELL REFA WILLD 0000 Olih AN 125F EXP O890 LD 000 Dynamic DataReplication 89 Chapter 3 Replication Management Example of Display 2 Separate during Replicate Replicate Execution Sal OO 258 Olaeh 200000004051 76s4012E 661 47 ME SMES DynaricDataReplecation Separate is executed Separate Execution 521007125 Oleh 200000
111. eesssaasaesaeeesaeeeaaas 12 2 3 1 Replicate and State Transitions ccccccscsessessssssssseseseeeeeseseesseeseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 13 23 2 Separale and State Bg 1 ehsi L810 4 ere ee aeons e ea eE 14 Liou Koor NC SEAS DT NS O19 a E E EA 15 2 3 4 Activity State and Synchronous State s sssssss0essseseeeseeesssessessssesesesssessessssessssssseesssessseeeensesesessseees 16 e LO 61018 60 icy 210 2 een a en mn Ra Oe one RES E yee ee eee eee 17 2 5 Relationship between Copy Performance and Copy Control State cccccccccccccccccccccceceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeensaaaaas 19 20 TR CCHS cot 0 OI cease eset nce ca a E E A E mace aaseaseees 20 24 Copy Faults and State Meech 8 cee ee ae ete ee ee eee eee ee ae e ee eve Ree ne eee e e awe er EEE awe 21 De SS Oi My areata E Sa dena ede se sloet E 22 Chapter 3 Replication Management oossssssssssseccccccccsssssssesececcocoosssssssssseececocosssssssssseecececosssssssssesececocosssssssseeesosssossssesse 23 3 1 Replication Management Overview 2c 2 lt 222 22222222222222020200cc0ccen2ec2e0220000cee0decndeeceddaceandaccecesancacdeadacndecnoccncenceccancqaccaeueadeen 23 3 1 1 Operalions and Aulhonzatoi Leve R eesisoeonu i a ERE E 23 3 1 2 Event Detection and Operation Message Output coerscoeiscor sneis ireke aa eise Eaa eiar eu EA Eia 24 3 1 3 S i T O a E 26 32 WRMLANALION OP ICP CAL ON Sere i erase se sig en
112. efault 15 seconds to detect events Therefore there is a time difference between when an event actually occurred and when a message is output Also messages for each detected event are displayed at the same time For information about an environment setting regarding the state monitoring s event detection time interval and operation message output control refer to the User s Manual or User s Manual UNIX in accordance with your OS 25 Chapter 3 Replication Management 3 1 3 Notes on Operation Note the following points when operating replication management System Parameter Setting on UNIX For more information refer to the User s Manual UNIX Messages at Start Immediately after iSM is started replication related device information is created internally Replication related device information is recreated according to an information recreate instruction from ReplicationControl Even if an attempt is made to display the Replication Screen at this timing the screen cannot be displayed because the device information cannot be obtained If this happens retry to display the screen after a while Action to Be Taken at Occurrence of Problems Refer to dialogs messages or help to take appropriate action 26 Chapter 3 Replication Management 3 2 Explanation of Replication Screen To perform an operation select the volumes you want to perform the operation to in the Volume Li
113. en ccceeeeeeeceeeeeeee ees 30 replication link informatiOn ccccccssseeeeeeceeeeeeeees 38 Replication Management ccecccceceeeesseeeeeeeeeeees res replication operation commands cccecceeeeeeeeees 140 replication operation file cece cccesseeeeeeeeeeeeeeeees 112 replication operations ccceceeecccceceeeeseeeeeeeeeeeeeees 140 replication port N port identifier eee eeeeeeees 99 replication port N port identifier lock 99 fep heaton ec Of ol lt eee eee 27 replication state display command cccccceeeeees 165 replication volume cceccccccccceeseeeececeeeseeeeeeeeeeeseeeeeees l ReplicationControl 0 0 cccecseeecccceeeeeeseseeceeesaeaseeees I SS OMG eioen ianea aiaee 58 104 106 151 RESO oa E E E 11 Restore protect ccccccccccccccessssseeeeceeeseeeeeeeeeeeseeeeeees 11 Restore Update cc ecccccccccceesseeeeeececeeeeeeeeeeeeeeeeaeeees 11 PESTOPE COMMNANC esscr crara EESO EEEE 151 testoro CROC Oler sources 16 Restore CXCCUUION sescsasinnreaanniansdcnctusacninandonntansecatagoonds 15 restore STAC sancti aceisgnsecevelaceodaaiaipescoaiscennscacateniaumnteonsece 16 Restore 1 OC eects cnc tee ccs eon eceeaunenkaeccnoneeencabdeenexneies 15 POS UMMC COPY vcccccccscsaioceccanicactacecseouecdeceecaeiacaciideatantes 63 64 TD O EE AA E A E ET 20 TNS V e enn castenenenscamietua saseeoce ateatieeennsectdegeahev 8 Ea PATATE EAEE AN E EET E E T E l
114. en From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot be selected 14 Chapter 3 Replication Management i Selected Volume List Displays the list of the pair MV RV information selected in the Replication Information screen Volumes whose Execution Result is Unexecutable cannot be selected because they do not satisfy the execution conditions For the Unexecutable volumes do the following by referring to the Unexecutable Information MV Fault Refer to 2 2 2 HW Fault Unique to Replication in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure MV Outside 1SM After execution of RV Forced Separate perform Forced Separate for Management the volume in MV with the pair setting MV Monitoring After execution of RV Forced Separate perform Forced Separate for Suspended the volume in MV with the pair setting MV Freeze After execution of RV Forced Separate perform Forced Separate for the volume in MV with the pair setting RV Separate Complete Execute it for a volume in the Synchronous state MV Force Unpaired Perform Forced Unpair for RV RV Forced Separate Execute it for a volume in the Synchronous state RV Outside 1SM After execution of MV Forced Separate perform Forced Separate for Manageme
115. end Instruction es Background Copy Instruction Synchronous Copy or Semi synchronous Copy or Resume Suspend abnormal Background Copy Suspend Instruction Figure 2 6 State Transition Diagram of Copy Control State 18 Chapter 2 Data Replication 2 5 Relationship between Copy Performance and Copy Control State If the copy control state is set to the Synchronized Copy state the difference between MV and RV is not accumulated because updates to MV are immediately reflected to RV However the write time to MV is longer because it waits for reflection of the updates to RV Ifthe Copy Control state is set to the Suspend state the difference between MV and RV is accumulated because updates to MV are not reflected to RV but the write time to MV is the same as normal I O In this way there are correlations between the amount of accumulated differences in MV and RV and write performance in different copy control states The correlation for each copy control state is shown in Table 2 3 Table 2 3 Correlations in Different Copy Control States Copy Control State Difference between MV and RV Write Overhead to MV Foreground Synchronous Exists Foreground Semi synchronous Background Suspend Does not exist If the difference between MV and RV is large in the Replicate state we recommend to select a copy control state which gives the difference between MV and RV smaller in a sy
116. eparate to MV and RV individually Forced Separate forcibly separates MV and RV and makes RV available Operation Procedure Do one of the following to display the Forced Separate screen e Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen point to Forced Operation and then select Forced Separate e Right click in the Replication Information screen point to Forced Operation and then select Forced Separate Figure 3 33 shows an example of the Forced Separate screen Forced Separate Logical Disk Name MV Disk i Replicate OSAKA SMSCE 01lzh Storaqed Selected Unexecutable Separated Separate rplidd 7 O344h Storaqed Cannot be Unexecutable Separated Separate ENEE wk O00e OOOY OSech Storaqged selected Replicate ENEE wk OO0f OO07 OSedh ciate bela Not selected Unexecutable ENEE oracleOQOO OS34h otoaraqed DE i Summary i Details Force Separate MV and RY AN Because this command is executed for MY and RV individually if any part is out of this 15M control then Forced Separate will be executed only on one part In this case it will show in unexecutable reason BY access restriction on Forced Separated becomes B W Permit Choose pairis which you want to execute from list then click Execute button It is possible that multiple pairs are chosen and executed Execute Close Help Figure 3 33 Example of Forced Separate Scre
117. eplicationControl Sooo eS eee ad option Displays information only associated with a specified drive name or a path name of the NTFS folder ap option Displays information only associated with specified logical disk numbers av option Displays information only associated with specified mount point volume names ah option Displays information only associated with specified HBT If LUN is also specified the system displays information only associated with specified HBT and LUN ctl option Lists the physical disk numbers and logical disk numbers of control volumes and the corresponding disk array names p option Displays the version information and the date when the volume list is created as the property information of the volume list ax option Lists disk array information correspondence of all logical disks and the property information of the volume list Displayed Information 1 When the cr option is specified When the volume list is created or updated successfully the following message appears iSM11700 Please wait a minute iSM11701 Volume list is created successfully ii When the d option is specified Disk array information as shown below is listed Disk Array List Disk Array Name Number of Drives disk_array_name number Description disk array name Disk array name number Number of logical disk information volume information items for each disk array registered in the volume li
118. er of the file system Then mount the MV again after starting Restore On the UNIX system if an MV s file system is mounted Restore does not start resulting in an abnormal end Therefore before executing Restore you must unmount the MV s file system Main Options For the iSMre_restore command you can specify the following options regarding the Restore operation 1 Specifying paired volumes Specify MV and RV volumes e Specify MV mv volume mvflg mv flg Specifies the volume and volume type of MV e Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV For information about volume types refer to 4 3 Volume Types On the Windows system when a specific partition drive letter is specified for a volume consisting of multiple partitions all partitions in the volume become operation targets therefore the default setting does not allow the multiple partitions to be operated To perform operations for a volume consisting of multiple partitions you need to change the default setting For information about the replication operation option setting file refer to the Data Replication Command Reference 2 Specifying the copy range cprange Normally only the difference area diff of MV and RV is copied You can also instruct to copy the entire area full explicitly 151 Chapter 4 Functions of ReplicationControl SS SS oN 3 Specifying the Copy Control state cpmod
119. es for unpair must satisfy the following conditions i The specified MV and RV are paired ii The specified MV and RV are in the Separated state iii The disk array where the specified MV and RV are stored is monitored iv The disk array where the specified MV and RV are stored is not in the Freeze state v The specified MV is not registered in the AT group 48 Ne Chapter 3 Replication Management A RV unmounted by the ReplicationControl function from a business server or backup server of Windows may be set in the Not Ready state In this case even if the synchronous state of the pair is separated the RV mode is kept in the Not Ready state Make sure to change the RV set in the Not Ready state to the R W Permit state by RV mode change operation prior to unpair with the exception of the case where the logical disk of RV is used by a business server or backup server in succession after unpair 49 Chapter 3 Replication Management 3 3 2 Replicate When you perform Replicate for volumes with the pair setting copy from MV to RV starts Operation Procedure Do one of the following to display the Replicate screen e Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen point to Volume Operation and then select Replicate e Right click in the Replication Information screen point to Volume Operation and then select Replicate
120. etting MV or RV has been registered in the volume list Target Pair iii The volume list is not being created or updated aC i Disk array is not in the Freeze state l In the Replicate or Restore state Semi synchronous Copy cannot be performed in the same disk array Synchronous Copy cannot be changed to Semi synchronous Copy or Semi synchronous Copy cannot be changed to Synchronous Copy The disk is not a dynamic disk or GPT formatted partition disk Figure 4 29 Execution Conditions of Copy Control State Operation 160 Chapter 4 Functions of ReplicationControl 46 5 Wait Command Use the iSMrc_wait command to wait for Synchronous State rpl sync Synchronous State rst sync or Separated State A pair of MV and RV must be specified as the target volumes beforehand The MV and RV to be specified must be registered in the Volume List created by the iSMvollist Main Options The iSMrc_wait command enables the specification of the following options for wait operation 1 Specifying paired volumes Specify MV and RV volumes e Specify MV mv volume mvflg mv flg Specifies the volume and volume type of MV e Specify RV rv volume rvflg rv_flg Specifies the volume and volume type of RV For information about volume types refer to 4 3 Volume Types The target volumes MV and or RV can be specified in any of the combinations below e MV and RV Waits for a specified pair of volumes to enter a target sta
121. fic partition drive letter is specified for a volume consisting of multiple partitions all partitions in the volume become operation targets therefore the default setting does not allow the multiple partitions to be operated To perform operations for a volume consisting of multiple partitions you need to change the default setting For information about the replication operation option setting file refer to the Data Replication Command Reference 175 Chapter 4 Functions of ReplicationControl 3 Forced Unpair force If the regular unpairing becomes impossible due to a failure occurred in the connections between disk arrays and the like it is possible to perform Forced unpair for MV and RV individually by specifying the force option You can specify one of the following as a Forced Unpair target e Perform Forced Unpair for both MV and RV force all e Perform Forced Unpair only for MV force mv e Perform Forced Unpair only for RV force rv Note the following when performing Forced Unpair e When MV and RV are in the same system execute the all specification e When MV and RV are in different systems use Forced Unpair by specifying MV or RV e When performing Forced Unpair by using MV specification or RV specification after removing the cause of the failure you must perform Forced Unpair for the other volume e If Forced Unpair is performed for either MV or RV subsequent replication operations will
122. for a volume in the Synchronous state MV Outside iSM Execute it for a pair under the iSM management Management All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Have been registered to Execute it for a pair that is not registered in the AT group AT group i Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog iii Copy Mode You can specify the copy control state when copy is resumed The following copy modes can be specified Changes the copy control state to the foreground copy Synchronous mode Semi synchronous Changes the copy control state to the foreground copy Semi synchronous mode This can be specified for pairs in different disk arrays Background Copy Changes the copy control state to the Background Copy state When you click the Execute button the following message is displayed iso a 02600 Will you execute Figure 3 24 Confirmation Screen 66 Chapter 3 Replication Management ee Execution Conditions To perform operations of suspending resuming copy the following conditions must be satisfied i The target MV is recognized by Replication Management as the Replication target disk ii The target MV and RV are paired iii The activity state of
123. for all the snapshot volumes SV paired with the base volume viii The pair of the specified MV and the paired RV is not in the Separate state ix The Activity State of the pair of the specified MV and the paired upper MV is Separate x The Activity State of the pair of the specified RV and the paired lower RV is Separate xi The Semi synchronous Copy mode cannot be specified for paired volumes set in the same disk array The Semi synchronous Copy mode can be specified only for paired volumes set in different disk arrays xii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed Windows only xiii The iSM dedicated special file is not being created HP UX version UNIX only xiv When an LVM volume group or a VxVM disk group is specified the target volume group or disk group must be active UNIX only xv When specifying the combination of an LVM volume group or a VxVM disk group with a special file name logical disk name you must specify the same number of logical volumes that make up the volume group or disk group as MV RV on the special file name logical disk name side In this case Restoration is performed in specified sequential order UNIX only The above execution conditions 11 111 x11 xiii xiv and xv are not applicable when conducting a joint operation with the iSM replication management 155 Chapter 4 Functions of ReplicationControl Figure 4 28 illu
124. ge is displayed iso F 02600 Will you execute Figure 3 12 Confirmation Screen 47 Chapter 3 Replication Management Execution Conditions To Pair setting or Unpair the following conditions must be satisfied Conditions for Pair setting Volumes in which the pair setting 1s performed must satisfy the following conditions i The volume capacities of MV and RV match ii The specified RV is not set as RV for another pair iii Ifthe specified MV is set as MV for another pair the maximum number of simultaneous pairs is not exceeded iv The volume formats match v The pair hierarchy does not form any loop vi When MV and RV exist in the same disk array and if RV is used to set another pair a volume in another disk array is specified vii The disk array where the specified MV and RV are stored is monitored viii The disk array where the specified MV and RV are stored is not in the Freeze state ix Ifthe specified MV is registered in the AT group the MV and the specified RV are set as a DDR pair x A volume having snapshot attributes other than BV is not set as MV xi A volume having snapshot attributes is not set as RV A Do not execute Pair Setting for a reserved volume of the business server or for a volume specified as a performance optimization work disk The replication screen does not display the Volume List EEEEEEEEEEENEAETEEENEEEEEE Conditions for Unpair Volum
125. gnized by Replication Management as the Replication target disk ii The target MV and RV are paired iii The activity state of the target pair is Replicate or Restore iv The disk array where the specified MV and RV are stored is not in the Freeze state v The disk array where the specified MV and RV are stored is monitored vi The specified MV is not registered in the AT group 69 Chapter 3 Replication Management E Figure 3 28 illustrates the execution conditions of changes to Background Copy Each of 1 to vi in the figure corresponds to the respective number above i Replication Target Disk ii Pair Setting iii Replicate or Restore iv Not in the Freeze state TargetPair v Disk array monitored vi The specified MV is not registered in the AT group Figure 3 28 Execution Conditions of Change to Background Copy 70 Chapter 3 Replication Management 3 3 7 RV Mode Change You can change the RV access restriction Operation Procedure Do one of the following to display the RV Mode Change screen e Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen point to Volume Operation and then select RV Mode Change e Right click in the Replication Information screen point to Volume Operation and then select RV Mode Change Figure 3 29 shows is an example of the RV Mode Change screen RY Mod
126. gnored and the system is improperly operated settings which have been already made might be affected Type of Indication amp Describes contents which require special attention during operation The First Edition in March 2003 The Ninth Edition in November 2004 Contents Chapter Data Replication Over view xcicccicscccvescccecscesesccicccsccestuciicsiactistesaecsccstaurnteciGavaiciiececatescesianseeniteactlidasteonceccnteiaaies 1 1 1 DEEP O a E eee re mene eee ee l LZ Examples of Applyine Data Rep CAOM occcciesec aces cceceeseecerencerecetecnecerteanacensenrerercersecsseoteecesteaqaetoreedencersecueoteedeatenee 2 1 2 1 Da e R E E ee seneaseenenceencaecen scene comes esau eee 2 1 22 To 0 er Vo NG iN Ve GUIDO ieee tect scree eer cement E E E E E 4 1 2 3 Parallel Processing of Search Opera OM sescnirorii en n 5 1 3 System Configuration osceann a a a a a aa a a ei aias 6 Chomer Data Replication sneis aino EEEO EEREN EROE ENERE NOSNE RENEA OEE 8 2 1 Volume CcicicsW Ghats 106 amp Cena een reer Orn manne ere Rn Merry ares erat iste hor ert E eee ee eer ec et eee E err 8 La Repi 8 101 8 2105 a ne en ne Pen ae enter en mere en Tree 10 221 IS POMS A acc eee septate ee ects gee ae eps ctge eager E E ees topes dee eee aap ana edna cans 10 Labid S eee E A A R 10 225 TNs cae acess ise se et E cece 11 23 Replication Operations and State Transitions ccccccccccscccccecccceceeeeceeeececeeeeeeeeeeeeeeeeeeeeceeeeeeeeeeeeeeee
127. h MSUF MSUH 0011h MsUI MSUJ 0010h MSUH MSUK 0013h MSUL MSUL 0012h MSUK MSUN 0015h MSUN MSUN 0014h MSUM MSUP 0017h MsuQg g working YW Figure 3 1 Example of Replication Screen i For details refer to 3 2 2 Configuration Display Area ii For details refer to 3 2 3 Replication Information Screen and 3 2 4 Disk Array LINK Information Screen For details on the AT group information screen refer to the Data Replication User s Manual Disaster Recovery System Installation and Operation Guide 27 Chapter 3 Replication Management 3 2 2 Configuration Display Area The configuration display area is under the monitoring by the iSM and displays the list and the state of the Disk Arrays that can use the Replication function as well as the status of link among them EU repli Storage3300 File View Operation Help eu Sh Server H E Storage4100 0010 H B Storage3100 0010 H P Storage3300 Figure 3 2 Example of Configuration Display Area 28 SEER EEE Chapter 3 Replication Management Disk Array icon ea S E etc Indicates that the disk array is normally operating in colors Indicates that the license capacity of the DynamicDataReplication RemoteDataReplication or RemoteDataReplication DisasterRecovery is insufficient If license capacity is insufficient you cannot execute pair setting unpair Indicates that the fault occurs in any link path between disk array
128. hapter 4 Functions of ReplicationControl 4 4 Replication Operation File To perform the batch setting of multiple pairs by executing replication and pair operation commands or to execute multiple commands for a specific pair use the replication operation file replication operation file allows operation target pairs to be described in the file managed and shared thereby improving system operations and maintenance performance of the data replication The following example shows a description in the replication operation file e Example for the Windows system Type MV Type RV Id dev000 drv E Id dev006 drv H Parallel configuration Id dev002 Id dev002 MV RV 1 1 Id dev005 e Example for the UNIX system Type MV sfn dev rdsk c16t1d0 sfn dev rdsk c16t1d2 vg dev vevol dg dg name Id dev001 Id dev003 Parallel configuration sfn dev rdsk c16t2d0 sfn dev rdsk c16t2d0 MV RV 1 1 sfn dev rdsk c22t3d0 To specify the replication operation file use the file option together with the replication operation Id dev001 drv F drv G Id dev007 Id dev003 Id dev004 Type RV sfn dev rdsk c16tldl sfn dev rdsk c16t1d3 Id dev rdsk c16t1d4 dev rdsk c16t1d5 Id dev002 sfn dev rdsk c23t2d0 sfn dev rdsk c16t2d1 sfn dev rdsk c16t2d2 commands and pair operation commands For information about how to describe and specify the replication operation file refer to the Data Replication
129. he figure corresponds to the respective number above Replication Target Disk li Pair Setting Not in Restore execution Not in the Freeze state v Disk array monitored vi MV is unmounted from the host vii The specified MV is not registered in the Target Pair AT group ran viii Separate is not being performed i between the upper volume and the lower volume that are paired Figure 3 18 Execution Conditions of Separate of Chapter 3 Replication Management 3 3 4 Restore When you perform Restore for volumes with the pair setting copy from RV to MV starts Operation Procedure Do one of the following to display the Restore screen e Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen point to Volume Operation and then select Restore e Right click in the Replication Information screen point to Volume Operation and then select Restore Figure 3 19 shows an example of the Restore screen Restore Logical Disk Name MV Disk Selected Unexecutable Replicated Replicate TOS AFA MSCE OOlZh Storage Separate TIETY 7 Os44dh Storage Separate ENEE wk O00e 0007 OS2ch Storage Not selected Unexecut able BReplicated Replicate ENEE wk O00f 0007 Szdh Storage Unexecutable ENEE oracledoo O534 h storages 1 Cannot be selected gt Fs A a Restore Conditions ili Active Mode BY Protection F BY Update Ra
130. he specified time it is discontinued and the command ends abnormally e Time specification limit second A value in seconds specified for second is the monitoring time limit A value from 0 to 86 400 seconds integer can be specified e No limit limit nolim Unlimited wait On the Windows system the default value can be specified by using RPL LIMWATCHDEV in the replication operation option setting file On the UNIX system the default value can be specified by using the RPL LIMWATCHDEV environment variable For details of each setting refer to the Data Replication Command Reference Displayed Information The iSMre_ wait command displays the following message during Wait execution and when Wait ends On the Windows system Execution message Waiting End message activity _state Normal End YYYY MM DD hh mm ss MV disk_number ld name type volume_name path RV disk_number ld_ name type volume_name path Description If you do not want the execution message to appear change the RPL_WAITMSG setting in the replication operation option setting file Information about the replication operation option setting file refer to the Data Replication Command Reference 162 Chapter 4 Functions of ReplicationControl activity_ state Activity State of the paired volumes for which the wait command is completed Replicate Synchronous State rpl sync Restore Synchronous State rst sync Separate Separ
131. i The disk array where the specified MV and RV are stored is not in the Freeze state iv The disk array where the specified volume is stored is monitored v The specified MV or RV is not registered in the AT group Figure 3 37 illustrates the execution conditions of Forced Separate Each of 1 to v in the figure corresponds to the respective number above Replication Target Disk Target Pair li Pair Setting iii Not in the Freeze state Disk array monitored The specified MV or RV is not registered in the AT group Figure 3 37 Execution Conditions of Forced Separate IT Chapter 3 Replication Management 3 3 9 Forced Unpair When a failure occurs in the disk array of MV or RV monitoring is suspended and the normal Cancel Pair may not be performed In such a case you can use Forced Unpair to unpair the pairs for MV and RV separately Operation Procedure Before performing Forced Unpair you must separate MV and RV with Separate or Forced Separate Do one of the following to display the Forced Unpair screen e Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen point to Forced Operation and then select Forced Unpair e Right click in the Replication Information screen point to Forced Operation and then select Forced Unpair Figure 3 38 shows an example of the Forced Unpair screen Forced Unpair Selected Unexecutable Information Logi
132. ibute Indicates the volume of replication origin ES White IV BV having the BV attribute Indicates a volume which is not a replication object BV becomes MV MV BV by operating pair setting ii Number The logical disk number is displayed in hex digit It is the same as the logical disk number shown in the main screen State Monitoring screen iii OS Type Indicates the volume format When performing Replication operations the OS type must be correctly specified Indicates Linux format volume Indicates HP UX format volume Indicates Windows format volume 31 Chapter 3 Replication Management iv Logical Disk Name The identification name or identifier see Note D given for the logical disk is displayed It is the same as the logical disk name displayed in the main screen State Monitoring screen and can be changed from the main screen State Monitoring screen A When the events given below have occurred when displaying the Replication Information screen the Logical Disk Name or Paired Disk Name field may show the unique volume number Volume Absolute Address managed inside the disk array e The link failure has occurred e The Disk Array on the remote side is not managed by 1SM or is in monitoring stop state These events occur in a pair connected by RemoteDataReplication when the host to which a local volume is connected cannot recognize the volume on the remote side Also in such a ca
133. ication volume 2 RV2 3 After that use the replication volume 1 RV1 and replication volume 2 RV2 alternately to perform backup Chapter 1 Data Replication Overview 1 2 2 Test Environment Setting You can set the same environment as the production task environment easily by creating replication volumes using the Data Replication function You can evaluate an application program by using data used in the production task which makes evaluation of application programs more efficient Furthermore in building an evaluation environment operations are suspended only for the time which takes to separate replication volumes from the master volume Therefore the suspension time can be substantially reduced Production Task Production Task Replication Replication RV RV Connect Separate Figure 1 4 Test Environment Setting The procedure for using a replication volume as a test environment is described below 1 Connect the master volume MV and replication volume RV 2 3 Suspend the production task separate the replication volume RV and then resume the task Perform evaluation of the application program by using the separated replication volume RV Chapter 1 Data Replication Overview 1 2 3 Parallel Processing of Search Operation By creating replication volumes of the master database you can separate the database and carry out update task
134. in advance eliminates the need for considering the existence of a control volume during operation Ifa control volume has been defined an I O is issued to a disk array using the control volume automatically For details on the definition of a control volume refer to the Data Replication User s Manual Installation and Operation Guide for Windows of systems to be used The business server to which MV is connected can operate MV directly and no control volume is needed normally The backup server to which RV is connected can perform operations such as replication or separation if a control volume is prepared 107 Chapter 4 Functions of ReplicationControl Business Server Backup Server k ReplicationControl Volume List P Control Volume WNW Volume List INO NUNNL um ss FC Connection FC Connection 7 L i E3 I 5 S D z V X y Ta s of a w L Ni Ze oa s AccessControl Figure 4 2 Operation Using a Control Volume In the ReplicationControl environment setting you need to set DIRECT issue an I O to a disk array directly for I O issuing path to a disk array For details on environment setting refer to Chapter 3 Operation Settings in the Data Replication Command Reference Notes on Operation Take notes on the following for direct operation to a disk array e Set Access Control using the Access
135. ing and unpairing by commands which have been conventionally conducted by the client of the iSM through GUI You do not need to connect the logical disk to be operated to the server and to register the logical disk in the volume list Therefore to link with the iSM for operation you do not need to create the volume list To conduct a joint operation with the iSM install the ReplicationControl on the server on which the iSM has been installed and is operating When you conduct ReplicationControl environment setting select MANAGER issuing an I O to a disk array via the iSM for the setting of I O issuing path to the disk array For details of the environment setting refer to Chapter 3 Operation Settings in the Data Replication Command Reference Operations linked with the iSM have the following advantages e You can use commands for managing and maintaining the operations of the data replication function and operating environment construction e The logical disk to be operated does not need to be connected to a server You can operate all the logical disks in the disk array to be monitored by the iSM e Since operation is performed through the iSM connection to the disk array and issuing an I O to the disk array can be performed through LAN Management Server Figure 4 3 Operation Linked with iSM 109 Chapter 4 Functions of ReplicationControl eT Notes on Operation For operations linke
136. isk ii The target MV and RV are paired iii The activity state of the target pair is Separate iv The Semi synchronous Copy mode cannot be specified for pairs set in the same disk array The Semi synchronous Copy mode can be specified only for pairs set in different disk arrays v The pair of the specified MV and the paired RV pair are not in the Restore state 52 Chapter 3 Replication Management vi The activity state of the pair of the specified MV and the paired upper MV is not in the Restore state vii The activity state of the pair of the specified RV and the paired lower RV is not in the Restore state viii The disk array where the specified MV and RV are stored is not Freeze state ix The disk array where the specified MV and RV are stored is monitored x The RV has been unmounted from the host xi The specified MV is not registered in the AT group xii Separate is not being performed between the upper volume and the lower volume that are paired xiii Snapshot is not in operation Figure 3 15 illustrates the execution conditions of Replicate Each of 1 to xiii in the figure corresponds to the respective number above Replication Target Disk Pair Setting Separated Semi synchronous not allowed for the same disk vi Not in the Restore state xii Separate is not being performed between the upper volume and the lower volume that are array Not in the Freeze state Disk array m
137. isplays the logical disk name of RV xi Pair Number Displays the logical disk number of RV xii RV Disk Array Name Displays the disk array name to which RV belongs xiii ATgroup Name Displays the name of the AT group to which the volume belongs 42 Chapter 3 Replication Management 3 3 Various Operations of Replication Management 3 3 1 Pair Setting Unpair To perform replication operations you must set pairs beforehand To set a pair set the original volume as MV and the target volume as RV You can also use the volume you have set as RV in another pair by setting it as MV You can set pairs freely within the following bounds e You can set up to three volumes of RVs dRVs or up to four volumes of RVs including rRV for one MV at the same time e You can set RVs in up to 2 disk arrays for one PV e You can set DynamicDataReplication only for one layer in the disk array e You can set a pair only when the two volumes have the same capacity Figure 3 7 shows an example of the pair setting Figure 3 7 Example of Pair Setting You may want to specify multiple pairs simultaneously for example when you initially build or rebuild a replication environment To specify pair environments at a time use Replication Setting of New Setting which is one of the configuration setting functions For details refer to the Configuration Setting Tool User s Manual GUI and 3 4 2 Save Pair Setting Informati
138. ivity states or simply activities The execution states indicating state transitions and the state in which the state transition is complete are called synchronous states Table 2 1 shows the activity states and synchronous states which transit as a result of each replication operation For information on handling MV and RV access in the activity states refer to 2 6 RV Access Restriction Table 2 1 Activity State and Synchronous State Separate State Separate Execution e Temporal state until the difference between MV and RV sep exec becomes zero after Separate e As a rule read and write to RV are not allowed Separated separated e Data copy between MV and RV is not performed This state occurs immediately after the pair setting e Normally read and write to RV are allowed Forced Separate cancel e MV and RV are forcibly separated by Forced Separate e Read and write to RV are allowed Failure Separation fault e MV and RV are forcibly separated in the disk array due to a copy fault Read and write to RV are allowed Replicate State Synchronous Execution e Reflection of the difference between MV and RV at rpl exec Replicate has not been completed The difference is being reflected from MV to RV e Updates to MV is reflected to RV e As a rule read and write to RV are not allowed Synchronous State rpl sync Reflection of the difference between MV and RV at Replicate has been completed Updates
139. l disk number Logical disk name VAA Volume Absolute Address OS type Host adapter number bus number and target ID LUN Physical disk number Mount point volume name Drive letter or path name mounted to the folder of the NTFS volume the user accesses Version information of the iSMvollist command used to create the volume list Date when the volume list is created or updated Host name of the server owning the volume list Total number of disk arrays in the volume list Total number of volume information items in the volume list Execution Conditions To create and display the volume list the following conditions must be satisfied i While the volume list is being created or updated it is not possible to display the volume list or execute replication operation commands and snapshot operation commands 118 Chapter 4 Functions of ReplicationControl 4 5 2 Command Operations UNIX On the UNIX system by using the volume list creation and display function by means of the 1SMvollist command it is possible to obtain and display special file name logical disk name and associated OS type hereafter volume list of the logical disks in the disk arrays To use the replication operation function it is necessary to create the volume list beforehand by executing the 1iSMvollist command because only the volumes that have already been registered in the volume list are targets Only an appropriate privileged user superuse
140. le Foreqround Copy State Restore Synchronous Sto Cannot be Replicate Synchronous Sto selected Unexecutakble Have been registered to ATqroup Replicate Synchronous Sta Selected Figure 3 23 Example of Resume Copy Screen From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot be selected i Selected Volume List Displays the list of the pair MV RV information selected in the Replication Information screen Volumes whose Execution Result is Unexecutable cannot be selected because they do not satisfy the execution conditions For the Unexecutable volumes do the following by referring to the Unexecutable Information 65 Chapter 3 Replication Management Have Unpaired Execute it for a volume with the pair setting Foreground Copy State Execute it for a volume in the Suspend state Separate State Execute it for a volume in the Suspend state Freeze De freeze the Data Replication function and execute it again MV Monitoring Change the disk array of MV to the Monitored state and execute it Suspended again RV Monitoring Change the disk array of RV to the Monitored state and execute it Suspended again MV Force MV Force Unpaired MV Force Unpaired Perform Forced Unpair for RV RV Force Unpaired Perform Forced Unpair for MV RV Forced Separate Execute it
141. led in the management server that monitors disk arrays This server controls disk arrays and the Data Replication function e Business server backup server Performs Data Replication operation or backup operation in cooperation with business Software to run Data Replication consists of the following components Chapter 1 Data Replication Overview e Storage Manager Provides the disk array configuration and state display functions Installing DynamicDataReplication and or RemoteDataReplication allows the replication management function hereinafter referred to as the Replication Management incorporated in iSM The Replication Management provides setting and operating functions such as state display pair setting and replication operation for DynamicDataReplication or RemoteDataReplication e ReplicationControl Provides commands for checking replication operations and replication states from the business server and also provides library functions e AccessControl The function to set the logical disks that can be accessed for each business server e DynamicDataReplication The function to realize data replication within the same disk array e RemoteDataReplication The function to realize data replication in the different disk arrays Chapter 2 Data Replication Chapter 2 Data Replication This chapter describes the types and state transitions of volumes that are necessary to perform operation using the Data Replication function
142. led the Replicate state Update to MV Update to MV Update to MV Replicate operation starts Until the difference is zero a Separate State Synchronous Execution Synchronous State Replicate State Figure 2 3 Replicate and State Transitions 13 Chapter 2 Data Replication 2 3 2 Separate and State Transitions When Separate is performed the difference between MV and RV at the time of executing the Separate start instruction is reflected to RV and RV is separated No update to MV after Separate is reflected to RV After Separate is performed data copy to RV is performed if the contents of MV and RV at the beginning of Separate do not match and all updates to MV before the Separate start instruction are reflected to RV The state from the beginning of Separate to the content of MV at the beginning of Separate is completely reflected to RV is called the Separate execution state The state where all updates to MV are reflected to RV is called the state separated by Separate or the separated state Separate execution and the separated state are collectively called the Separate state When Separate is executed under specification of immediate use of RV Separate immediate the RV contents can be referred to or updated immediately after the Separate start instruction is issued regardless of whether or not all the MV contents have been reflected into the RV This feature is implemented as follows When an update
143. licate Restore or Separate execution the following warning message is displayed and the change of the RV mode of the volume is cancelled 02205 Ri Permit is specified but cannot be set due to replication Figure 3 31 Warning Screen Execution Conditions To change the RV mode the following conditions must be satisfied i The target RV is recognized by Replication Management as the Replication target disk ii The target MV and RV are paired iii In the Separated state when R W Permit is specified iv The disk array where the specified MV and RV are stored is not in the Freeze state v The disk array where the specified RV is stored is monitored vi The specified RV is not registered in the AT group Figure 3 32 illustrates the execution conditions of change of the RV mode Each of 1 to vi in the figure corresponds to the respective number above Replication Target Disk ii Pair Setting iii Separate state when R W Permit is specified iv Not in the Freeze state v Disk array in RV monitored vi The specified RV is not ranictered in the AT aroaiin Target Pair Pe ee ee Figure 3 32 Execution Conditions of Change of RV Mode 73 Chapter 3 Replication Management 3 3 8 Forced Separate When a failure occurs in the connection between disk arrays and the normal Separate cannot be performed on MV and RV you can use Forced Separate to instruct S
144. link to link number Link number Number of a disk array to link to link number beginning with 0 path number Path number Connection number for each of disk arrays to link to beginning with 0 path state Path status Indicates the connection status for each path indicated by the path number e Ready Link normal e Fault Link abnormal e Freeze Replication function of disk array to link to freezing e Offline Link status unknown disk array starting e Link Check The link status involved in abnormal occurrence being checked director number Director number Number of the replication director or host director to which the path indicated by a path number is connected Execution Conditions To display information on the replication function of a disk array the following conditions must be satisfied i Atleast one logical disk of the target disk array is registered in the volume list ii The volume list is not being created or updated iii A special file specific to iSM is not being created HP UX version UNIX only The above execution conditions are not applicable when cooperation with iSM replication management is performed 180 Chapter 4 Functions of ReplicationControl 4 9 Disk Operations The disk operation function which functions only on the Windows system enables disks to be controlled and operated so as to operate the data replication and snapshot functions on the Windows system Disk operation
145. llation and Operation Guide for Windows 34 Chapter 3 Replication Management u aN xiv Number of Pairs Indicates the number of related pairs This value is equal to the number of volumes which make up the pair link minus 1 An example of pair relations and Number of Pairs is shown below Number of Pairs Pair Relation D E B E Some replication operations cannot be carried out while in the Replicate state Restore state or Separate execution if the pair relation has multiple layers or if multiple RVs are connected to one MV Refer to the execution conditions of the operations Ifthe Number of Pairs is 2 or greater check the hierarchy in the Connection screen xv Capacity GB Indicates the capacity of the logical disk xvi LD Set Name Indicates the name of the LD Set to which the volume belongs xvii ATgroup Name Indicates the name of the AT group to which the volume belongs For details on the AT group refer to the Data Replication User s Manual Disaster Recovery System Installation and Operation Guide 35 Chapter 3 Replication Management 3 2 4 Disk Array LINK Information Screen When you click the Disk Array LINK Information tab in the information list display area the link information currently set between the disk arrays is displayed refer to Figure 3 4 Example of Disk Array LINK Information Screen To perform sort click the item name by which you want t
146. logical disks and associated information Main Options The iSMrc_Idlist command enables the specification of the following options e a option Lists information of the logical disks stored in all disk arrays e d option Lists information of disk arrays that are recognized by the system e de option Lists information of the logical disks stored in the specified disk array Ifa specific logical disk name is specified only information of the specified logical disk name is displayed e cr option Updates the latest information by re obtaining information of disk arrays and logical disks that are connected to the system This option can be used only when the replication management controlling the I O issuance to disk arrays via the iSM is simultaneously conducted 172 Chapter 4 Functions of ReplicationControl SS EES See Displayed Information 1 When the a option or the de option is specified Logical disk information as shown below is listed Receiving Disk Array Name Management LDN OS Type LD Name Attribute Capacity disk_array_name management Idn type ld name attribute Capacity Description Receiving Message indicating that data is being received During a joint operation with replication management this message is displayed until data has been received While data is being received the Go 99 character is updated 2 disk array name Disk array name management Identifies
147. lp Shows or hides IVs w Status Bar w Iv Display 3 4 8 Display Copy Fault List Copy Fault List 3 4 5 Record Screen Information Record Screen Information Environment Setting 3 4 3 Environment Setting Properties 3 3 12 Displaying Volume Connection State Refresh Fo when Connection Screen is displayed 3 4 6 Display Disk Array Properties when Disk Array is selected from configuration display area and Properties is displayed 3 4 7 Display Link Properties when Director Port is selected from Disk Array LINK Information Screen and Properties is displayed 3 4 4 Refresh Operation Help l Pair Setting CSCSCs C 3 3 1 Pair Setting Unpair Unpair 3 3 1 Pair Setting Unpair Replicate 3 3 2 Replicate 3 3 3 Separate 3 3 4 Restore 3 3 5 Suspend Resume Copy Volume Operation H Forced Operation P Separate H System Operation Restore ight Suspend Copy Resume Copy Change to Background Copy RY Mode Change 3 3 5 Suspend Resume Copy 3 3 6 Change to Background Copy 3 3 7 RV Mode Change 39 Chapter 3 Replication Management Storage4 300 Operation Help Bair Setting LUnpair Volume Operation Forced Separate Forced Unpair Forced Operation System Operation gap 3 3 8 Forced Separate 3 3 9 Forced
148. me Absolute Address type OS type special file name Special file name disk array name Disk array name path Whether to use a special file Usually this field is blank and nothing appears in this field however when data replication or snapshot is performed if an error is detected in access to the special file B appears version Version information of the iSMvollist command used to create the volume list yyyy mm dd hh mm ss Date when the column list was created or updated host_name Host name of the server owning the volume list disk array number Total number of disk arrays in the volume list volume number Total number of volume information items in the volume list Execution Conditions To create and display the volume list the following conditions must be satisfied 1 While the volume list is being created or updated it is not possible to display the volume list or execute replication operation commands and snapshot operation commands 41 While the iSM Server is running on the same server the volume list only can be displayed but it cannot be created or updated HP UX version UNIX system iii The iSM special file is not being created HP UX version UNIX system only 123 Chapter 4 Functions of ReplicationControl On the Windows system the volume list creation and display function can be used via the GUI The GUI functions include volume list display selective display of disk arrays and c
149. me List Disk No LUN LON 05 Type LDName Disk Array Classification E disk6 43h O043h 20000004C 7FO4SE 0045 tom_E a Update Delete Candidate Volume List O3th 00th 200000004 Cr F04SE003F tom_E O40h QO000004C7FO49E 0040 O47h QO000004C07F049E 0041 O44h Ha same O45h LO_ O45 O46h U0000004C rF 04E 0046 O47h 2U0000004C FOSE 004 0493h 00000004C rF 04E 0043 Cancel Help Figure 4 20 Change Control Volume 136 Chapter 4 Functions of ReplicationControl When you try to change a control volume that has already been registered in Candidate Volume List the following confirmation screen appears To change the control volume to the logical disk selected from Selected Volume List click the Yes button To return to the Define Control Volume screen without update click the No button The definition of control volume Fi 00030 Do your want to update control volume of Disk array S2600 00217 Figure 4 21 Change Confirmation Screen of Define Control Volume Screen e Delete a control volume To delete the control volume that has already been registered in Selected Volume List select the logical disk to be deleted from Selected Volume List and click the Delete button Define Control Yolume Fa Selected Yolume List O4Sh O04 sh AOO000004C7FO49E 0043 tom_E t edd ny j Delete J Candidate Volume List seaees Dane aN N oee e a n TA i O3fh O03th SOQ00
150. message Flush Normal End YYYY MM DD hh mm ss disk_number ld_ name type volume_name path 181 Chapter 4 Functions of ReplicationControl Description YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second disk number Physical disk number ld name Logical disk name type OS type volume name Mount point volume name path Drive letter or path name mounted on the NTFS volume folder accessed by users Execution Conditions To perform Flush the following conditions must be satisfied i The target volume is registered in the volume list ii The target volume is in the Read Write available state iii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed iv The specified file system is mounted v This command flushes only the Windows file systems so that the data of applications handling their own cache cannot be flushed To flush application data to the disk you need to flush application data first and then execute the Flush command to flush the file system 182 Chapter 4 Functions of ReplicationControl 49 2 Volume Mount Command To carry out a volume mount the iSMrc_ mount command is used The iSMrc_ mount command associates volumes partitions and file systems Mounting allows volumes to be used as file systems local disks such as C and D on the Windows system When the 1iSMrc_ umount command unmounts a volume that is set in the Not Ready state
151. n and then select Suspend Copy e Right click in the Replication Information screen point to Volume Operation and then select Suspend Copy Figure 3 22 shows an example of the Suspend Copy screen Cannot be selected Suspend Copy Unexecutable Information Logical Disk Name Numk i Unexecutable Separate State Separate FEFAM MIr LD OO06 000E Replicate BREFAM MIR LD 000s 000s E EPEE Selected Replicate BREFAW MIR LD 0011 ooo Restore 1Z25 DELL REFAM 0015 Not selected ie Su ar y i Details Change from Foreground Copy status or Background Copy status to Suspend Copy status il Choose pair s which you want to execute from list then click Execute button It is possible that multiple pairs are chosen and executed Execute Close Help Figure 3 22 Example of Suspend Copy Screen From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot be selected 63 Chapter 3 Replication Management i Selected Volume List Displays the list of the pair MV RV information selected in the Replication Information screen Volumes whose Execution Result is Unexecutable cannot be selected because they do not satisfy the execution conditions For the Unexecutable volumes do the following by referring to the Unexecutable Information Unexecuta
152. n e Display state of the status bar Volume Connection screen location e Connection screen size 96 Chapter 3 Replication Management 3 3 18 Display Disk Array Properties The setting states of the device are displayed Do the following e Select a disk array in the configuration display area click View on the menu bar and then select Properties e Select a disk array in the configuration display area right click it and then select Properties Figure 3 52 shows an example of the Disk Array Properties screen 54300 Properties Differential Map Built BPeplication Status READY Background Copy Level 3 Maximum Number of BY Setting 4 SAA OZ002Z00000004C517B7DoO0Oo0000000 ooo Maximum Number af Concentrator 5 4 Maximum Number of Volume of 4096 ll ATgqroup Maximum Number of Yolume of One ATqroup 12s Figure 3 52 Example of Disk Array Properties Screen The items indicate the following information i Disk Array Name Displays the identification information of the disk array ii Differential Map Displays whether the difference control function to keep track of the update difference status of MV and RV exists If it is not installed difference copy cannot be performed The copy range is always All 97 Chapter 3 Replication Management iii Replication Status Indicates whether the Data Replication function of the disk array is available READY Indicates that
153. n error is detected in access to the path special file used for issuing an I O access is switched automatically to another path special file registered in the volume list and I O continuation to a disk array is tried When an error is detected in access to a path special file B is displayed in the Path information of the special file used at the time which indicates an error occurs in the special file After a path error is recovered when access to a volume by a blocked path is established successfully the Path information of the special file is cleared and the blocked state is released iv When the ctl option is specified Information on a control volume as shown below is listed Control Volume List Special File LDN Disk Array Name Path special file name Idn disk_array_name path Description special file name Special file name Idn Logical disk number disk array name Disk array name path Whether to use a special file Usually this field is blank and nothing appears in this field however when data replication or snapshot is performed if an error is detected in access to the special file B appears 121 Chapter 4 Functions of ReplicationControl v When the p option is specified Property information of the volume list as shown below is displayed Property of Volume List File Version version Created YYYY MM DD hh mm ss Owner Host Name host_name Disk Array disk_array_n
154. n is returned to the Volume List Display screen without saving the file 4 When the file has been saved successfully the following message appears CS Output of Information List 00003 Data was saved as 4 CSV File Figure 4 11 Confirmation Screen for CSV Output of Information List 5 Clicking the OK button returns to the Volume List Display screen 130 Chapter 4 Functions of ReplicationControl MMMM File Example The following example shows the CSV file that is output as the result of the CSV output of the information display list Drive Letter Path Name Volume Name Disk No Volume Definition L LUN LDN LD Name Disk Array Classification Paired Linked Logical Disk Information List Volume cce89866 4d8 7 1 1d8 92a3 806d61 72696f disk1 Control O0O0h 000ah BACK UP_CV Tokyo_Customer_DataBase IV E Volume cce89867 4d87 1 1d8 92a3 806d61 72696f disk2 001h 0005n DB DATA _ RV Tokyo_Customer_DataBase RV MV 0005h DB_ DATA_MV Tokyo _Customer_DataBase F Volume cce89868 4d8 7 1 1d8 92a3 806d61 72696f disk3 002h 0006h DB REDO1_RV Tokyo Customer _DataBase RV MV 0006h DB REDO1 MV Tokyo _Customer_DataBase G Volume cce89869 4d87 11d8 92a3 806d61 72696f disk4 003h 0007h DB REDO2_RV Tokyo Customer DataBase RV MV 0007h DB REDO2 MV Tokyo_Customer_DataBase H Volume cce8986a 4d87 1 1d8 92a3 806d61 72696f disk5 004h 0008h DB _CTL_RV Tokyo Customer_DataBase RV
155. n level L3 Allows all operations 3 1 2 Event Detection and Operation Message Output Events that occur in response to various operations performed on disk arrays and volumes can be detected by the state monitoring and displayed in the iSM Client s message display area as operation messages By executing an environment setting beforehand it is possible to detect events that occur as the result of executing replication operation commands or other operations as well as performing replication management operations and it is also possible to confirm the events from operation messages Table 3 2 shows the replication related events that can be confirmed as operation messages 24 Chapter 3 Replication Management Operation Target Disk array Volume O Regular report Note Table 3 2 List of Replication Related Events Operation eee m ooo f e ooo pues weren o a e a fue a Seese a a sowed sows owe f o gt p o Sems a a seme fe weere fe fcmenroe fcmecwnce A Additional report performed according to an environment setting Not reported Replication management operations include operations performed together with the ReplicationControl commands Regarding S2100 and A2100 the detection of events other than pair setting and unpairing events may not be possible during the state monitoring Furthermore the state monitoring monitors all the disk arrays volumes for a specified time interval d
156. nd RV are paired ii The target MV or RV has been registered in the volume list iii The volume list is not being created or updated iv The disk array where the specified MV and RV are stored is not in the Freeze state v Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed Windows only vi The iSM dedicated special file is not being created HP UX version UNIX only vii When an LVM volume group or a VxVM disk group is specified the target volume group or disk group must be active UNIX only viii When specifying the combination of an LVM volume group or a VxVM disk group with a special file name logical disk name you must specify the same number of logical volumes that make up the volume group or disk group as MV RV on the special file name logical disk name side In this case Copy is performed in specified sequential order UNIX only The above execution conditions 11 111 v vi vil and viii are not applicable when conducting a joint operation with the iSM replication management Figure 4 30 shows the Wait execution conditions Target Pair Pair setting MV or RV has been registered in the volume list The volume list is not being created or updated Disk array is not in the Freeze state The disk is not a dynamic disk or GPT formatted partition disk Figure 4 30 Execution Conditions for Wait Command 164 Chapter 4 Functions of ReplicationControl
157. nformation refer to 2 4 Copy Control State e Return Default Value Restores the default value of the disk array e Change You can specify the priority of the disk array When you click the Execute button the following message is displayed isM 2 02600 Will you execute Figure 3 46 Confirmation Screen Execution Conditions To perform operations of the copy control state the following conditions must be satisfied i The target disk array is recognized by Replication Management ii The specified disk array is monitored 84 Chapter 3 Replication Management 3 3 12 Connection Screen The connection state of the volume is displayed Operation Procedure Do one of the following to display the Volume Connection screen e Select a volume in the Replication Information screen point to View on the menu bar of the Replication screen and then select Connection Screen e Select a volume in the Replication Information screen right click it and then select Connection Screen e Double click a volume in the Replication Information screen Figure 3 47 shows an example of the Connection screen kpl Connection Screen S2100 1258 i 52100 1258 O0bchyCX REFARUMIAILD 0019 ii O0bdhjiC x REP ANWINTZILD 0020 vi 1 71 GBi SMIBIS iii gt iv Not Ready Deymatiuic Datakep lication Actraty state Replicate Syre State Syne Execution Copy Control state Foreground C
158. nge ie Only Difference i 411 Copy Mode Synchronous C Semi synchronous Background Copy Copy Mode can t be selected when BY Protection is selected in Active Mode BY Status f Not Ready Bead Only Default Choose pairis which you want to execute from list then click Execute button It is possible that wultiple pairs are chosen and executed Execute Close Help Figure 3 19 Example of Restore Screen From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot be selected 58 Chapter 3 Replication Management i Selected Volume List Displays the list of the pair MV RV information selected in the Replication Information screen Volumes whose Execution Result is Unexecutable cannot be selected because they do not satisfy the execution conditions For the Unexecutable volumes do the following by referring to the Unexecutable Information Being replicated by Replicate is being executed in another layer Execute it again after other pair Separate is complete Being restored by other Restore is being executed in another layer Execute it again after pair Separate is complete Separating Execute it again in the Separated state Freeze Defreeze the Data Replication function and execute it again Being separated by other Separate is being e
159. nt the volume in RV with the pair setting RV Freeze After execution of MV Forced Separate perform Forced Separate for the volume in RV with the pair setting RV Force Unpaired Perform Forced Unpair for MV Have been registered to Execute it for a volume that is not registered in the AT group AT group ii Summary Display Details Display RV Monitoring After execution of MV Forced Separate perform Forced Separate for Suspended the volume in RV with the pair setting For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog 19 Chapter 3 Replication Management _ _ _ _ _ _ _ _ _ _ _ _ ___________ __E______ Figure 3 34 is displayed when MV is not under the iSM Figure 3 35 is displayed when RV is not under the iSM After execution perform Forced Separate for MV or RV not separated Figure 3 34 Warning Screen for MV without under iSM Figure 3 35 Warning Screen for RV without under iSM When you click the Yes button the following message is displayed Figure 3 36 Confirmation Screen 76 Chapter 3 Replication Management MMMM Execution Conditions To perform Forced Separate the following conditions must be satisfied i The target volume is recognized by Replication Management as the Replication target disk ii The target MV and RV are paired or one of them is forcibly separated ii
160. o sort You can drag amp drop an item to permute the order of the items Beplication Information Disk Array LINK Information aToroup Information LINE Number LINK Disk Array Name Path Number oon Storaged1looyoolo 00h Normal l h oon Storage4l00 0010 Olh Normal leh Working A Figure 3 4 Example of Disk Array LINK Information Screen The Disk Array LINK Information screen displays information regarding the following items i LINK Number Indicates the number of the linked disk arrays The link number 0 is allocated to the first disk array and 1 to the second disk array refer to Figure 3 5 Replication Link Information The icon shows the following path status ea Green Indicates the status of normal or link checking Gray Indicates the offline status amp Light Blue Indicates the status that the data replication function is frozen Red Indicates that a fault occurs 36 Chapter 3 Replication Management eT ii LINK Disk Array Name Indicates the identification name assigned to the linked disk array iii Path Number Indicates the connection path number in the link If the link is connected via four paths the path numbers are 0 1 2 and 3 respectively refer to Figure 3 5 Replication Link Information iv Path State Normal Indicates the normal status Offline Indicates that the link setting is unconfirmed during startup of the disk array Freeze Indicates
161. olume has been registered in the volume list ii The volume list is not being created or updated iii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed Windows only iv The iSM dedicated special file is not being created HP UX version UNIX only v When an LVM volume group or a VxVM disk group is specified the target volume group or disk group must be active UNIX only The above execution conditions are not applicable when conducting a joint operation with the iSM replication management 170 Chapter 4 Functions of ReplicationControl Figure 4 32 shows execution conditions for displaying a specific volume name The target volume or the volume paired with the target volume has been registered in the volume list The volume list is not being created or updated The disk is not a dynamic disk or GPT formatted partition disk Figure 4 32 Displaying Specific Volume Name 171 Chapter 4 Functions of ReplicationControl 4 7 Pair Setting and Unpair Operations Pair operation commands make functions available for listing logical disks pair setting and unpairing Pair operation enables data replication that changes or switches RVs dynamically 4 7 1 Logical Disk Information Display Command To perform logical disk information display the iSMrc_Idlist command is used The iSMrc_Idlist command targets disk arrays that are recognized by the system and obtains and displays
162. on 43 Chapter 3 Replication Management isd Operation Procedure Pair Setting Do one of the following to display the Pair Setting screen e Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen and then select Pair Setting e Right click in the Replication Information screen and then select Pair Setting In pair setting whether the selected volume can be set as MV is determined automatically Ifthe selected volume is a volume for which pair setting cannot be performed as MV the following prompt appears iSM Ed Following volumes cannot be set to MV as the object of the unexecutable condition Mumber 0S Type Unexecutable Condition Reason fOO1l0h WH 1lF58 EX DOR Since this val Would you want to open pair setting dialog e Figure 3 8 Confirmation Screen The possible causes are as follows DDR RDR Due to the description of the reason the volume cannot be set as MV of DDR and RDR Due to the description of the reason the volume cannot be set as MV of Due to the description of the reason the volume cannot be set as MV of RDR After checking the message click the Yes button to display the Pair Setting screen To select a volume again on the Replication Information screen click the No button 44 Chapter 3 Replication Management Figure 3 9 shows an example of the Pair Setting Screen i il iii
163. on Command Reference YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second disk number Physical disk number ld name Logical disk name type OS type volume name Mount point volume name path Drive letter or path name mounted in the NTFS volume folder accessed by users Replicating The character is dynamically updated until Replicate is completed 142 Chapter 4 Functions of ReplicationControl Seo SSE ee On the UNIX system Start message Replicate Start YYYY MM DD hh mm ss MV special_ file name Id_name type RV special_ file name ld name type Execution message Replicating End message Replicate Normal End YYYY MM DD hh mm ss MV special_ file name Id_ name type RV special_ file name ld name type Description The execution message and the end message appear only when wait has been specified to wait for the Copy completion state If you do not want the execution message to appear change the setting of the RPL_WAITMSG environment variable For information about environment variables refer to the Data Replication Command Reference YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second special file name Special file name ld name Logical disk name type OS type Replicating The character is dynamically updated until Replicate is completed Execution Conditions To perform Replicate the following conditions must be satisfied
164. on function and execute it again MV Monitoring Change the disk array of MV to the Monitored state and execute it Suspended again RV Monitoring Change the disk array of RV to the Monitored state and execute it Suspended again MV Force Unpaired Perform Forced Unpair for RV RV Force Unpaired Perform Forced Unpair for MV RV Forced Separate Execute it for a volume in the Synchronous state MV Outside 1SM Execute it for a pair under the iSM management Management All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Have been registered to Execute it for a pair that is not registered in the AT group ATgroup i Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog 59 Chapter 3 Replication Management ii RV Use Start Time Determine when to make the RV available Separate End After Separate execution the RV becomes available when the difference between the MV and RV contents has been reflected into the RV Separate completion Separate Start After Separate execution the RV is immediately available while the difference between the MV and RV contents is being reflected into the RV Separate immediate DynamicDataReplication Ver2 needs to be installed for using this function The function is avail
165. onitored RV is unmounted from the host The specified MV is not registered in the AT group TargetPair Not in the Restore state Separate is not being performed between the upper volume and the lower volume that are paired Snapshot is not in operation xiii Figure 3 15 Execution Conditions of Replicate 53 Chapter 3 Replication Management 3 3 3 Separate If Separate is performed for paired volumes MV is separated from RV and RV is made available RV cannot be reused until Separate is completed However it can be used for Separate immediate Operation Procedure Do one of the following to display the Separate screen e Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen point to Volume Operation and then select Separate e Right click in the Replication Information screen point to Volume Operation and then select Separate Figure 3 16 shows an example of the Separate screen Separate G Selected Nuuber MV Disk Peplicate fOSAKA MSCE lh Storage Cannot be Unexecutable Separated Separate rplid4 7 IEE TIa Storage selected Unexecutable Separated Separate SMSS wk OOOe OOO07 OfS2ch Storages Replicate SNSS wk OOOf OOO Of2dh Storage Unexecutable SNSS oracleOoo Of34h Storages Not selected ii ie Summary C Details Separate BY from Mi BY Use Restriction BY Use Start Time are specified in below
166. opy Copy Iode Synchronous Copy Replicate start AO0A609 15 59 22 v Remaining copy time 4m 40s 54100 1245 Obeh REFAMIMI XLD 0041 171 GBS 8MB DymnaricDataReplicatior Actraty State Replicate gyne State Syne Execution Copy Control State Foreground Copy Copy Mlode Synchronous Copy Replicate start ADD AME N9 15 59 24 Remaining copy time m 4s Figure 3 47 Example of Connection Screen This screen displays the pair selected in the Replication Information screen If two or more volumes are selected all of them are displayed 85 Chapter 3 Replication Management eT i Disk Array Name Displays the name of the disk array where the volume exists The disk array name of the selected volume is highlighted ii Logical Disk Number Format Logical Disk Name Displays them in the form of logical disk number format logical disk name or VAA The logical disk number format and logical disk name of the selected volume is highlighted iii Copy Progress Displays the progress of copy This display disappears when copy is complete Progress may not change if I O load is too heavy If a link failure occurs Progress may not change In this case refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows iv Access Restrictions for RV Displays the access restrictions for RV There are the following modes R W Permit Read
167. opy Control State starts and ends On the Windows system Start message Change Start YYYY MM DD hh mm ss MV disk_number ld name type volume_name path RV disk_number Id name type volume_name path End message Change Normal End YYYY MM DD hh mm ss MV disk_number ld_ name type volume_name path RV disk_number Id_ name type volume_name path Description YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second disk number Physical disk number ld name Logical disk name type OS type volume name Mount point volume name path Drive letter or path name mounted on the NTFS volume folder accessed by users 158 Chapter 4 Functions of ReplicationControl On the UNIX system Start message Change Start YYYY MM DD hh mm ss MV special_ file name ld_ name type RV special_ file name ld name type End message Change Normal End YYYY MM DD hh mm ss MV special_ file name ld_ name type RV special_ file name ld name type Description YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second special file name Special file name Id_name Logical disk name type OS type Execution Conditions To perform operations regarding the Copy Control state the following conditions must be satisfied i The target MV and RV are paired i The target MV or RV has been registered in the volume list iii The volume list is not being created or updated iv The disk array where the s
168. or Restore to RV MV for Restore e Copy to reflect updates in MV to RV Copy to reflect updates in MV to RV after Replicate or Restore However if Restore protect is executed the updated data of the MV is not reflected into the RV You can change the copy method and state by changing the copy control state There are the following copy states in the copy control states as shown in Table 2 2 Table 2 2 Copy Control State Copy Control State Copy State Foreground Copy Synchronous Copy e Copy for reflecting difference is performed Moue e Updates to MV are reflected RV sequentially Semi synchronous Copy e Copy for reflecting difference is performed pore I O of updates to MV is completed when data is written to MV and the data is copied to RV immediately after that Can be set for a RemoteDataReplication pair Background Copy Copy for reflecting difference is performed I O of updates to MV is completed when data is written to MV and the data is accumulated as difference information For the accumulated difference data is copied to RV asynchronously The copy interval to RV Background Copy Level can be changed in units of disk arrays Suspend Suspend Copy for reflecting difference is not performed I O of updates to MV is completed when data is written to MV and the data is accumulated as difference information Reflection to RV is not performed Suspend due to a failure Forcefully suspended in the disk array due to a
169. ore ends On the Windows system Start message ISM13224 MV is restored Volume name volume_name Mount Point path Umount Start YYYY MM DD hh mm ss Umount Normal End YYYY MM DD hh mm ss Restore Start YYYY MM DD hh mm ss MV disk_number Id name type volume_name path RV disk_number ld_ name type volume_name path Execution message Restoring End message Restore Normal End YYYY MM DD hh mm ss MV disk_number ld name type volume_name path RV disk_number ld_ name type volume_name path 153 Chapter 4 Functions of ReplicationControl ee SS SSS SS SS Sooo Description The execution message and the end message appear only when wait has been specified to wait for the Synchronous State rst sync If you do not want the execution message to appear change the RPL_WAITMSG setting in the replication operation option setting file For information about the replication operation option setting file refer to the Data Replication Command Reference YYYY MM DD hh mm ss Start End time Year Month Day Hour Minute Second disk number Physical disk number ld name Logical disk name type OS type volume name Mount point volume name path Drive letter or path name mounted on the NTFS volume folder accessed by users Restoring The character is dynamically updated until Restore is completed On the UNIX system Start message Restore Start YYYY MM DD hh mm ss MV special_ file name ld_ name
170. pecified MV and RV are stored is not in the Freeze state v The Activity State of the target pair is Replicate or Restore vi The Semi synchronous Copy mode cannot be specified for paired volumes set in the same disk array The Semi synchronous Copy mode can be specified only for paired volumes set in different disk arrays vii Changing from Synchronous Copy to Semi synchronous Copy mode or from Semi synchronous Copy to Synchronous Copy mode is disabled viii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed Windows only ix The iSM dedicated special file is not being created HP UX version UNIX only x When an LVM volume group or a VxVM disk group is specified the target volume group or disk group must be active UNIX only xi When specifying the combination of an LVM volume group or a VxVM disk group with a special file name logical disk name you must specify the same number of logical volumes that make up the volume group or disk group as MV RV on the special file name logical disk name side In this case Copy is performed in specified sequential order UNIX only The above execution conditions 11 111 vill 1x x and x1 are not applicable when conducting a joint operation with the iSM replication management 159 Chapter 4 Functions of ReplicationControl Figure 4 29 illustrates the execution conditions of operations regarding the Copy Control state Pair s
171. perations and State Transitions Separating Indicates the temporary status that difference between MV and RV is reducing to zero during Separation Execution Separated Indicates the status that the data copying is not processing between MV and RV It becomes this status right after pair setting orced Separation Indicates the status that MV and RV are separated forcibly by the forced separate instruction Fault Indicates the status of forced separation inside the disk array due to copy fault occurrence Indicates the status that difference exists while copy is executing Synchronized Indicates the status that reflection of the difference between the MV and RV at the copy start instruction has been completed Updates to the MV are reflected on the RV sequentially for the pair in this state Restoring Indicates the status that difference between MV and RV is not reflected at the time of restore execution Restored Indicates the status that difference between MV and RV is reflected at the time of synchronized restore execution Updated MV content is reflected to RV 33 Chapter 3 Replication Management x Copy Control State The control status in copying is displayed For more information refer to 2 4 Copy Control State Foreground Copy _ Indicates the copy state in the synchronous or semi synchronous mode Background Copy Indicates the asynchronous copy state by difference management Freeze Indicates that the d
172. promote effective and efficient utilization of the information a high throughput large capacity and high reliability storage system is required Data Replication provides functions to build and manage such a storage system This chapter describes overview of Data Replication hardware configuration and software configuration 1 1 Data Replication Data Replication is a function that creates Replication Volumes RV of a business volume called Master Volume MV in the data replication It is installed in the disk array Replication volumes can be connected to or separated from the master volume at any time Operations such as connection and separation can be instructed from the business server and the iSM Client e g Windows system The following two methods are provided to create replication volumes 1 Creating replication volumes within the same disk array DDR DynamicDataReplication 2 Creating replication volumes in different disk arrays RDR RemoteDataReplication Parallel Processing Backup Search Master Server Production Task Online N eplicatiol AAAA Nanenane DynamicDataReplication RemoteDataReplication Figure 1 1 Data Replication Chapter 1 Data Replication Overview Master Server 1 2 Examples of Applying Data Replication When you introduce Data Replication and use replication volumes which can be separated you can get
173. r can create or update the volume list When you have added or deleted disk arrays to or from the system or built or cancelled logical disks you must update the volume list to reflect the information Ifthe volume list is not updated data inconsistency may occur during data replication and snapshot operations Main Options The following options can be specified in the 1iSMvollist command i Creating updating the volume list r It is possible to scan devices connected to the system and create or update the volume list The volume list can be automatically created at the start of the business server However if settings remain unchanged since installation the volume list cannot be automatically created and therefore will need to be manually created To automatically create it it is necessary to change the name of the rc file that has been created at the installation A The HP UX system executes ioscan 1M to obtain device information when the volume list is created iSMvollist r To do so it uses the k option so as to obtain device information from the kernel rather than from the actual hardware Therefore even though the hardware is made available the actual hardware may not be made available In this case creation or update of the volume list fails and the following message appears 1SM11758 System call error error code 214 If this error message appears execute the ioscan fn to confirm the state of the actual hard
174. r RemoteDataReplication Replicate is executed Restore is executed aa Separate is executed gt gt 87 Replicate is complete EE Restore is complete Separate is complete Replicate is complete E Restore is complete J Separate is complete GES Chapter 3 Replication Management id Differential Quantity of Volume Transfer Rate Displays the amount of difference and transfer rate during copy operation The unit of the amount of difference is variable e g KB MB GB and the unit of transfer rate is fixed MB S Example of Display Replicate Amount of Difference Transfer Rate X 1 GB LEEA After Replicate is complete When Replication is complete Amount of Difference 0 Amount of Difference and Transfer Rate MB S disappears Volume Color The Volume Color changes by layer and it becomes the layer color immediately after setting the pair or when Separate has completed When volume colors of the pair match it indicates synchronization Layer color G PV Yellowish green ii IstLayer Light blue iii 2nd Layer Blue iv 3rd Layer Yellow Example of Display SRON SRON SZW s7m0 0837 QO0PRYICX PIC_1_CASES_1_M 1_0S 000ah CXP2C_1_CASEZ_1_MRI QO0PKICX PIC_2_CASES_1_MR2 WOahICK PZC_2 CASES I RVI _ S _ a9aanahnHn _ 2 m RVIMY p K R W Permit RAW Permit TEE RAN Permit Yellowish gr
175. r is performed for either MV or RV subsequent replication operations will not function properly because inconsistency occurs in the recognized states of MV and RV 5 RV use start time rvuse You can select one of the following as the time for making the RV available e Immediately after Separate execution rvuse immediate After Separate is started RV becomes available even during execution of Separate while the difference between MV and RV is being reflected to RV e After completion of Separate rvuse complete After Separate is started RV does not become available until the difference between MV and RV is fully reflected to RV and Separate is completed RV cannot be used while the difference between MV and RV is being reflected to RV e According to the default setting rvuse default On the Windows system the system follows the RVUSE specification in the replication operation option setting file On the UNIX system the system follows the setting of the RPL SEP RVUSE environment variable For details of each setting refer to the Data Replication Command Reference 147 Chapter 4 Functions of ReplicationControl Displayed Information The iSMrc_separate command displays messages when Separate starts during execution and when Separate ends On the Windows system Start message Separate Start YYYY MM DD hh mm ss MV disk_number Id name type volume_name path RV disk_number ld_ name type volume_name path
176. range is from 1 through 30 seconds integer If the value is omitted the RPL WATCHDEYV setting in the replication operation option setting file is used for Windows while the setting of environment variable RPL_ WATCHDEV is used for UNIX For details on operational settings refer to the Data Replication Command Reference e No Wait nowait Performs only a Replicate start instruction and terminates the command You can check the termination of the command by the iSMre_ query or iSMrc wait command 141 Chapter 4 Functions of ReplicationControl eS Displayed Information The iSMrc_ replicate command displays messages when Replicate starts during execution and when Replicate ends On the Windows system Start message Replicate Start YYYY MM DD hh mm ss MV disk_number Id name type volume_name path RV disk_number ld_ name type volume_name path Execution message Replicating End message Replicate Normal End YYYY MM DD hh mm ss MV disk_number Id_ name type volume_name path RV disk_number ld_ name type volume_name path Description The execution message and the end message appear only when wait has been specified to wait for the Replication completion state If you do not want the execution message to appear change the RPL_WAITMSG setting in the replication operation option setting file For information about the replication operation option setting file refer to the Data Replicati
177. reation and update of the volume list The function to define control volumes used for the business server to operate the data replication or snapshot function is also provided Screen Configuration To create or display the volume list with GUI use the Volume List Display screen the layout of the Volume List Display screen The following is i gt Fa Volume List Display A GD Fie View Operation Help Disk Array Subsystem pu vi disk4 1x x disk5 disk disk diska diskio diskli disk14 disk15 disk disk Ef Ve Wolume H Welvolure Paired Linked Logical Disk Information List A 200000004051 7FD40121 200003 ii 1 FO40123 PAOD an2 17FD40124 1258 S5HREK LD_OO0 1258 SHREK LD_OO1 mv_O1 my _O2 RPL_200_011F 20000000477 FO8090046 2000000047 7FO8090047 ZO0000004C5S1 FD40122 ZO0000004C517FD40125 52500 0244 5A xiv t4 SAn uet 52100 1255 52100 1255 52100 1259 52100 1259 52100 1259 sz800 0037 s2800 0037 52500 0244 52500 0244 Sissi fication Jimu dp ene U Disk Array O176h rple B23500 07 44 Figure 4 5 Layout of Volume List Display Screen i Title bar Displays the title of the Volume List Display function ii Menu bar For details on each item of the menu bar refer to Menu Item List on page 126 124 VOLUME 15 4 Chapter 4 Functions of ReplicationControl iii Toolbar buttons a Clicking this button has the same effect a
178. rformed by anybody by changing the authority to access commands and directory operations 104 Chapter 4 Functions of ReplicationControl 4 2 Operation Types To use ReplicationControl the following operations can be selected e Direct operation for a disk array This operation performs via FC directly a volume MV or RV connected to the server and recognized by OS This operation type is the most basic type when replication operation is performed by a business server It is possible for the user to prepare a volume IV is recommended that can issue an I O securely to a disk array and operate it through the specific volume control volume The operation through the control volume is effective especially in the backup server environment where even if the target volume RV is connected OS cannot access the volume by the replication operation and the like For the direct operation for a disk array the logical disk of the target MV or RV needs to be registered in the volume list in advance on the server where commands for the replication operation are executed For details refer to 4 2 1 Direct Operation for a Disk Array Operations linked with the iSM replication management function Installing ReplicationControl in the management server and linking it with the replication management function of the iSM for operations enable you to manage and maintain the data replication function and to construct the environment by commands
179. rol Volume screen the message for confirming whether to cancel the definition appears When you click the Yes button for the confirmation the definition information is not saved The Define Control Volume screen is closed and returned to the Volume List Display screen To return to the Define Control Volume screen click the No button 138 4 Chapter 4 Functions of ReplicationControl The definition of control volume c 00029 The definition of control volume is not saved Do you want to exit the definition of control volume Figure 4 25 Cancel Confirmation Screen of Define Control Volume Screen Update the volume list to reflect the updated definition information to the volume list Select File gt Create Update Volume List from the Volume List Display screen to create and update the volume list and reflect the saved definition information of the control volume to the volume list for registration When the volume list is created or updated the display of the Volume List Display screen is updated automatically Confirm that the definition information is updated correctly by checking the displayed information of Volume Definition 139 Chapter 4 Functions of ReplicationControl 4 6 Replication Operations Replication operation commands provide a function to operate volumes by using disk array s Data Replication function as well as a function to obtain and display a variety of information
180. s Indicates that the copy fault or the fault in all link paths between disk arrays occurs Indicates that the data replication function is frozen Indicates that the disk array to be linked 1s not directly monitored by Replication dark gray manager when a link is established between disk arrays e all etc Indicates that the state monitoring is stopped 2 light gray A disk array on which neither the DynamicDataReplication nor the RemoteDataReplication is installed does not appear on the screen A If the Replication does not recognize the disk array of the link destination when the link is established between disk arrays the disk array name may be displayed as the address value Subsystem Absolute Address which can uniquely identify the disk array not duplicated with other disk arrays Each information screen to be explained in the following page or later may not be displayed depending on the display items selected in the configuration display area and the state of disk array as follows Tabs in the information list display area cannot be selected when ISM server specified in the configuration display area Disk Array LINK Information tab cannot be selected when the following disk arrays specified in the configuration display area e Disk arrays not supporting RemoteDataReplication e Disk arrays without RemoteDataReplication license e Unmanaged disk arrays ATgroup Information tab cannot be sele
181. s selecting Create Update Volume List from the menu Create Update Volume List Clicking this button has the same effect as selecting Define Control Volume from the menu Define Control Volume Clicking this button has the same effect as selecting CSV Output of Information List from the menu CSV Output of Information List iv Paired Linked Logical Disk Information List Displays logical disk information paired with the volume selected from the Volume List Display screen by the data replication or snapshot function by obtaining from a disk array Whena logical disk is connected to a link volume the linked logical disk information is displayed by obtaining from a disk array v Status bar The following information appears on the status bar VOLUME Displays the number of volume information items to be displayed on the Volume List Display screen If volume information of all disk arrays is displayed the number of all volume information items in the volume list is displayed For display by narrowing down disk arrays the number of volume information items of the target disk array is displayed vi Disk Array Selection Combo box Clicking the pull down button displays the list of disk arrays currently registered in the Volume List file vii Drive Letter Path Name Displays path information in the Volume List file vill Volume Name Displays volume names in the Volume List file ix Disk No Displays physical
182. s and search tasks using different volumes This allows you to carry out database update tasks without affecting database search tasks Nighttime Daytime D Connect Master Repication MV RV Master Reflection of Master Data for Previous Database Updated Parts Database Day Figure 1 5 Parallel Processing of Search Task The procedure for parallel processing of search operation is described below 1 In the nighttime suspend search tasks and connect the master volume MV and replication volume RV 2 In the daytime separate the master volume MV and replication volume RV Then perform update tasks and search tasks in parallel RV contains data for the prior day Chapter 1 Data Replication Overview 1 3 System Configuration Business Server Backup Server Backup Software gt Tape Drive ReplicationControl Management Server Replication e AccessControl e DynamicDataReplication LAN e RemoteDataReplication Storage Manager Disk Array Figure 1 6 System Configuration To install and use the Data Replication function the following hardware devices are required e Disk array Disk arrays on which the Data Replication function either with DynamicDataReplication or RemoteDataReplication is installed are required e Management server iSM is instal
183. s restoration while reflecting the updated data of the MV into the RV When the restoration is completed the state changes to Synchronous State rst sync A The default operation mode in 111 is RV Protection RV Update needs to be selected for executing Restore in the same operation mode as for Version1 4 or earlier Confirm the Restore operation mode before executing Restore If RV Protection is selected selection of v Copy mode is not permitted iv Range Normally Only Difference is selected which copies only the difference area of MV and RV You can also select All which copies the entire area explicitly Only Difference Copies only the difference of the volumes Copies the entire volume v Copy Mode You can specify the copy control state in Restore Execution and the Synchronous state at the same time as Restore The following copy modes can be specified Changes the copy control state to the foreground copy Synchronous mode Semi synchronous Changes the copy control state to the foreground copy Semi synchronous mode This can be specified for pairs in different disk arrays Background Copy Changes the copy control state to the Background Copy state 60 vi Chapter 3 Replication Management RV Status Specifies the access restrictions from the host until Restore is complete Not Ready Operations for the volume cannot be performed from the host Read
184. screen point to Volume Operation and then select Change to Background Copy e Right click in the Replication Information screen point to Volume Operation and then select Change to Background Copy Figure 3 26 shows an example of the Change to Background Copy screen Change to Background Copy Unexecutable Information Logical Disk Mame Numk Not selected Unexecutahle Separate State Separate REFAMNSMIX SLD 0006 Replicate EEFAM MIX LE OO14 onde Replicate L2S5S EXP O889 L ODL Selected Bestare 1258 DELL REFAM Oo1s Cannot be selected s a A Change from Foreground Copy status to Background Copy status Choose pairis which you want to execute from list then click Execute button It is possible that multiple pairs are chosen and executed Execute Close Help Figure 3 26 Example of Change to Background Copy Screen From the list select a pair for which you want to perform the operation and then click the Execute button You can select multiple executable pairs and execute them in a batch Unexecutable pairs cannot be selected i Selected Volume List Displays the list of the pair MV RV information selected in the Replication Information screen Volumes whose Execution Result is Unexecutable cannot be selected because they do not satisfy the execution conditions For the Unexecutable volumes do the following by referring to the Unexecutable Information 68 Ch
185. se operations such as Forced Separate and Forced Unpair for local volumes are enabled SERRE v Pair Number The logical disk number of paired volume is displayed in hex digit vi Pair Disk Name The logical disk name of paired volume is displayed vii Activity State The replication operation status is displayed Replicate Indicates the status that copy is executing from MV to RV Separate Indicates the disconnection status of MV to RV Restore Indicates the status that copy is executing from RV to MV Restore protect Indicates the state in which data is being copied from the RV into MV but the updated data of the MV is not reflected into the RV 32 Chapter 3 Replication Management viii Disk Array The identification name given to the Disk Array including the volume indicated by Pair Number is displayed It is the same as the Disk Array Name displayed in the main screen State Monitoring screen and can be changed from the main screen State Monitoring screen A If the Replication does not recognize the link destination of the disk array when the link is established between disk arrays the disk array name may be displayed as the address value Subsystem Absolute Address which can uniquely identify the disk array not duplicated with other disk arrays SERRE ERE ix Sync State The transition status in activity state is displayed For more information refer to 2 3 Replication O
186. st 115 Chapter 4 Functions of ReplicationControl SS SS oN iii When the a option is specified Correspondence information about logical disks as shown below is listed LDN LD Name VAA OS Type HBT LUN Disk No Disk Array Volume Name Path Idn Id_name vaa type hbt lun disk_num disk_array_name volume_name path Description Idn Logical disk number Id_ name Logical disk name vaa VAA Volume Absolute Address type OS type hbt Host adapter number bus number target ID lun LUN disk num Physical disk number disk_array_name Disk array name volume name Mount point volume name path Drive letter or path name mounted in the NTFS volume folder accessed by a user iv When the ctl option is specified Information on control volumes as shown below is listed Control Volume List Disk No LDN Disk Array Name disk_num Idn disk_array_name Description disk num Physical disk number Idn Logical disk number disk array name Disk array name 116 Chapter 4 Functions of ReplicationControl SS EES See v When the p option is specified Property information of the volume list as shown below is listed Property of Volume List File Version version Created YYYY MM DD hh mm ss Owner Host Name host_name Disk Array disk_array_number Volume Information volume_number Description version Version of the iSMvollist command used to create the volume list YYYY MM DD hh mm ss Dat
187. st Displayed on the Replication Information tab in the Replication Screen and then click the menu on the menu bar You can also right click the volume to display the menu 3 2 1 Replication Screen The Replication Screen consists of the configuration display area 1 on the left part of the screen displaying the configuration and state of the disk array and the information list display area 11 on the right part of the screen displaying the Volume List and disk array link configuration When the Replication Screen appears for the first time it contains only the configuration display area 1 and the information list display area 11 is displayed by clicking the disk array icon The information list display area 11 shows the selected disk array and the Volume List of the disk array connected with the selected disk array by RemoteDataReplication 2 Repli Storage3100 0010 File view Operation Help ist iSM Server Storage4100 0010 Fe SEs Ui Fi Storage3300 Replication Information Disk Array LINK Information ATgroup Information Classification Number 0S Type Logical Disk Name Pair Disk Name MSUL MSUZ MSUZ MSUL1 TOKYO MSU3 0003h TOKYO MSU4 TOKYO MSU4 0002h TOKYO MSU3 MSUS 0005h MSU MsU6 0004h MSUS MSU 0007h MsUs MSUs 0006h MSU i nsus 0009h HSUA MSUA 0008h MSU MSUB 000bh MSUC MSUC ii 000ah MSUB MSUD 000dh MSUE MSUE 000ch MSUD MSUF 000fh MSUG MSUG 000e
188. status Displays the link state when the target physical disk is the link volume LV used for the snapshot function Displays hyphen unless the target is a link volume link Connected unlink Unconnected Execution Conditions To perform Disk Signature operation the following conditions must be satisfied i The target physical disk is registered in the volume list ii The target physical disk is not Not Ready iii Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed 188 Chapter 4 Functions of ReplicationControl 49 5 Devices Scan Command To scan devices the iSMrc_ scan command is used Executing the iSMrc_scan command scans devices and lets the system recognize available devices When the system is starting up with the devices not connected to the system or in Not Ready state the system cannot recognize those devices For example a server using RV is restarted in the state where the RV is put in the Not Ready state by replication operation the RV is not recognized by OS In this case to make OS recognize the RV separate the pair and put the RV in the Read Write available state then execute the command If the device access restriction is changed to the Not Ready state by unmount of the iSMrc_ umount command release the Not Ready state to scan the device Executing this command has the same effect as Rescan Disks by the Disk Management function of
189. stem without sufficient suspension time for Separate execution because the processing time of Separate increases Also we recommend you to select a copy control state without write overhead to MV in a system where write performance to MV must be maintained and improved 19 Chapter 2 Data Replication 2 6 RV Access Restriction In the Replicate state and Restore state MV is synchronized with RV to always match the volume data between MV and RV Since the difference between MV and RV is reflected in the disk array independently of the operating system or file system however the volume of RV may become inconsistent Therefore the data replication function cannot impose access restrictions for MV and MV can be referred to and updated at any time The function can impose access restrictions for RV for activity state to prevent malfunction Table 2 4 shows the states which can be specified as RV access restrictions Table 2 4 RV Access Restriction Activity State oe a Activity State skein tecintn a Panes Tam Read Write R W RV is enabled for read write tf se S Read Only RO RV is enabled only for reading Not Ready NR RV is disabled for read write RV is not recognized by the A A A A Not Available NA operating system or the LU Logical Unit is invalid Note 4 Note 4 Note 4 Note 4 O Available A Available with administrative restrictions Unavailable rpl Replicate state RW Read Write rst Restore state RO Re
190. strates the execution conditions of Restore vill Separated vii Snapshot of all the SVs paired with MV BV is not established Pair setting MV or RV has been registered in the volume list The volume list is not being created or updated Both MV and RV have been unmounted Disk array is not in the Freeze state Separated Semi synchronous Copy cannot be performed for the same disk array The disk is not a dynamic disk or GPT formatted partition disk Figure 4 28 Execution Conditions of Restore 156 Chapter 4 Functions of ReplicationControl 4 6 4 Copy Control State Change Command For changing the Copy Control state the iSMrc_change command is used You can use option specification of the iSMrc_change command to perform the Copy Control state change in the Replicate or Restore state Before the Copy Control state is changed MV and RV to be specified must be paired beforehand In addition MV and RV to be specified must be registered in the volume list created by 1SMvollist When RV Restore protect specified 1s executed the updated data of the MV is not reflected into the RV Therefore changing a Copy Control state Synchronous Copy Mode Semi synchronous Copy Mode or Background Copy has no effect Main Options For iSMrc_change command you can specify the following options for changing the Copy Control State 1 Specifying paired volumes Specify MV and RV volumes e Specify
191. t volumes for which pair setting can be performed by the LD Set Name When the object volume for which pair setting can be performed is not registered in the LD Set LD Set Name cannot be used for narrowing down nor selected 45 Chapter 3 Replication Management ALL All volumes become selectable objects LD Set Name Volumes registered in the selected LD Set become selectable objects Undefined Volumes not registered in the LD Set become selectable objects v Logical Disk Select the Logical Disk which you want to set When you click the Execute button the following message is displayed i 02600 Will you execute Figure 3 10 Confirmation Screen Unpair Do one of the following to display the Unpair screen e Select a volume in the Replication Information screen click Operation on the menu bar of the Replication screen and then select Unpair e Right click in the Replication Information screen and then select Unpair Figure 3 11 shows an example of the Unpair screen Logical Disk Name Number mv Di Separate expSdud 4100 7 d105h Pei eB ae Selected Separate rpl30b 7 O30bh Store Not selected Unexecutable rplsod 7 0320 dh Star Unexecutakle rpl30e Dz0ek Storg Cannot be i selected 4 ii is Summary i Details Choose pairis which you want to unpair from list then click Execute button It is possible that multiple pairs are chosen and executed Execute Close Help Figure 3 11
192. te e MV only When the ratio of MV and RV that is set for MV is 1 to 1 RV can be omitted and the same operation as when MV and RV are specified is performed for this pair e RV only Same operation as when MV and RV are specified 2 Wait end condition cond You can specify a condition for ending Wait This option must be specified e Completion of synchronous copy cond sync Waits for Synchronous State rpl sync or Synchronous State rst sync e Completion of separation cond sep Waits for the Separated state including the Separated state accompanied by completion of Restore protect 3 Paired volume state monitoring interval interval second You can specify a time interval in seconds at which the state of paired volumes is to be monitored A value in seconds specified for second is the monitoring time interval A value 1 to 30 seconds integer can be specified On the Windows system the default value can be specified by using RPL_WATCHDEV in the 161 Chapter 4 Functions of ReplicationControl replication operation option setting file On the UNIX system the default value can be specified by using the RPL WATCHDEV environment variable For details of each setting refer to the Data Replication Command Reference 4 Paired volume state monitoring time limit limit You can specify a time limit for stopping the monitoring of the paired volume state Ifthe Wait is not completed before the elapse of t
193. te Diff Copy Diff RV Access Previous Active Description disk number Id_name type volume name path activity sync copy lt state gt Start Time lt state gt End Time separate diffsize copy_diffsize rvacc prev_ state On the UNIX system Displayed information MV Special File LD Name Type RV Special File LD Name Type Activity State Synchronous State Copy Control State lt state gt Start Time lt state gt End Time Separate Diff Copy Diff RV Access sync copy YYYY MM DD hh mm ss YYYY MM DD hh mm ss separate _diffsize copy_diffsize rvacc prev_ state Physical disk number Logical disk name OS type Mount point volume name Drive letter or path name mounted in the NTFS folder Activity State Paired operation state Copy Control State Operation start time lt state gt varies Operation end time lt state gt varies Difference of copy occurred in the Separate state Difference of copy occurred in the Replicate or Restore state Access restrictions for RV Paired operation state before the state transition special file name Id name type special file name ld name type activity sync copy YYYY MM DD hh mm ss YYYY MM DD hh mm ss separate_diffsize copy_diffsize rvacc 166 Chapter 4 Functions of ReplicationControl Seo SSE ee Previous Active prev_state Description special file name Special file name Id_name Logical disk name type OS type acti
194. the link path number of the selected link information iii Director Number Indicates the replication director host director for the 2400 and 2800 series number of the selected link information iv Port Number Indicates the port number of the replication director host director for the 2400 and 2800 series v Replication Port N Port Identifier Lock Indicates whether the port ID of the target is variable or fixed Display Description Variable value depending on the system configuration vi Replication Port N Port Identifier Indicates the port ID of the target 99 Chapter 3 Replication Management vii Path State Indicates the normal status Indicates that the link setting is unconfirmed during startup of the disk array Freeze Indicates that the Data Replication function in the target disk array is frozen Link Checking _ Indicates that the link status is being checked due to a failure of communication in the link Indicates that the link is invalid due to a failure of communication in the link Not Clear Indicates the state other than the above 100 Chapter 3 Replication Management 3 3 20 Display Copy Fault List The copy fault list displays the pairs where a copy fault occurred When a copy fault occurs do the following to recover from the fault The pair registered in AT group cannot be recovered from the copy fault list screen Unless you have acquired the volume information of the
195. the target pair is Replicate or Restore iv The Semi synchronous Copy mode cannot be specified for pairs set in the same disk array The Semi synchronous Copy mode can be specified only for pairs set in different disk arrays Can be set only when copy is resumed v The disk array where the specified MV and RV are stored is not in the Freeze state vi The disk array where the specified MV and RV are stored is monitored In case of copy suspend MV must be monitored vil The specified MV is not registered in the AT group Figure 3 25 illustrates the execution conditions of operations of suspending resuming copy Each of 1 to vii in the figure corresponds to the respective number above Replication Target Disk li Pair Setting Replicate or Restore iv Semi synchronous not allowed for the same disk array v Not in the Freeze state vi Disk array monitored vii The specified MV is not registered in the AT group TargetPair Figure 3 25 Execution Conditions of Suspend Copy and Resume Copy State Operation 67 Chapter 3 Replication Management 3 3 6 Change to Background Copy The copy control state is changed from the Replicate or Restore state to the Background Copy state Operation Procedure Do one of the following to display the Change to Background Copy screen e Select a volume in the Replication Information screen click Operation on the menu bar of the Replication
196. to copy the entire area full explicitly 140 Chapter 4 Functions of ReplicationControl Sooo eS See 3 Specifying the Copy Control state cpmode You can specify the Copy Control state during Replicate execution or in the Synchronous state The following can be specified e Synchronous Copy cpmode sync Changes the Copy Control state to the Synchronous Copy mode e Semi synchronous Copy cpmode semi Changes the Copy Control state to the Semi synchronous Copy mode This can be specified for pairs in different disk arrays e Background Copy cpmode bg Changes the Copy Control state to the Background Copy state 4 Specifying the access restrictions to RV rvacc You can specify the access restrictions to RV in Replicate Execution or when Replicate is complete e Not Ready rvacc nr Switches to the Not Ready state Operations cannot be performed from the system e Read Only rvacc ro Only Read from the system can be performed Pay careful attention when you specify Ready Only rvacc ro for the RV access restrictions For details refer to 2 6 RV Access Restriction 5 Specifying the wait for Copy completion wait nowait The system can wait for the completion of the command after Replicate has been performed until the Synchronous state starts e Wait Specified wait second If a value is specified in second the monitoring time interval of the disk array becomes the specified value The available
197. tput of Replication Screen Information Save in E DATA E o E Save a type CSViseparated by commall cs Cancel Z Figure 3 48 Example of CSV Output of Information List Display Screen 91 Chapter 3 Replication Management ST CSV File Containing Information Display List This section shows an example of the CSV file that is created by executing the CSV output of information display list In this file the information displayed on the screen is written in the format in which each item is separated by commas An example of the CSV file Classification Number OS Type Logical Disk Name Pair Number Paired Disk Name Activity State Disk Array Sync State Copy Control State Copy Mode RV Mode Differential Quantity of Volume Number of Pairs Capacity GB LD Set name ATgroup name TIV 0000h WN driveWNO 5554 2 5 MV 0001h WN driveWN 1 000 1h driveWN2 Replicate Storage4300 Synchronized Foreground Copy 0 KB 1 4 2 WN wosl ATGO RV 0002h WN driveWN2 0000h driveWN 1 Replicate Storage4300 Synchronized Foreground Copy Not Ready 0 KB 1 4 2 MV 0003h WN driveWN3 0004h driveWN4 Replicate Storage4300 Synchronized Foreground Copy 3 7GB 1 4 2 RV 0004h WN driveWN4 0003h driveWN3 Replicate Storage4300 Synchronized Foreground Copy Not Ready 3 7 GB 1 4 2 IV 0005h WN driveWNBS 4 2 WN wosl ATG1 IV 0006h WN driveWN6 4 2 WN wosl ATG2 MV 0007h WN driveWN7 0008h driveW N8 Restore
198. umber Volume Information volume_number Description version Version of the 1iSMvollist command used for creating the volume list YYYY MM DD hh mm ss Date when the volume list was created or updated host_name Host name of the server owning the volume list disk _array_ number Total number of disk arrays in the volume list volume number Total number of volume information items in the volume list vi When the ax option is specified Disk array information correspondence information of logical disks and property information of the volume list are listed as shown below Volume List iSMvollist Version X X XXX Date YYYY MM DD HH MM SS Disk Array List Disk Array Name Number of LDN disk_array_name number Volume List LDN LD NAME VAA TYPE Special File Disk Array Path Idn ld name vaa type special file name disk_array_name path Property of Volume List File Version version Created yyyy mm dd hh mm ss Owner Host Name host_name Disk Array disk_array_number Volume Information volume_number 122 Chapter 4 Functions of ReplicationControl S Description X X XXX Version information of the executed 1SMvollist command YYYY MM DD HH MM SS Execution date of the iSMvollist command disk array name Disk array name number Number of logical disk information items special file for each disk array registered in the volume list Idn Logical disk number Id_ name Logical disk name vaa VAA Volu
199. variable RPL_WATCHDEV is used for UNIX For details on operational settings refer to the Data Replication Command Reference e No Wait nowait Performs only a Restore start instruction and terminates the command You can check the termination of Restore by the iSMrce_ query or iSMrc_wait command 6 Specifying an operation mode for RV mode You can select whether to reflect the updated data of the MV into the RV while performing Restore e RV update specified mode update Performs Restore while reflecting the updated data of the MV into the RV When Restore is completed and the Synchronous State is placed the state changes to Synchronous State rst sync 152 Chapter 4 Functions of ReplicationControl eT e RV protection specified mode protect Performs Restore without reflecting the updated data of the MV into the RV When Restore is completed and the Synchronous State is placed Separate is automatically executed and then the state changes to Separated State e According to the default setting mode default On the Windows system the system follows the MODE specification in the replication operation option setting file On the UNIX system the system follows the setting of the RPL SEP MODE environment variable For details of each setting refer to the Data Replication Command Reference Displayed Information The iSMrc_restore command displays messages when Restore starts during execution and when Rest
200. vity Activity State sync Paired operation state copy Copy Control State lt state gt Start Time Operation start time lt state gt varies lt state gt End Time Operation end time lt state gt varies separate diffsize Difference of copy occurred in the Separate state copy_diffsize Difference of copy occurred in the Replicate or Restore state rvacc Access restrictions for RV prev_ state Paired operation state before the state transition Execution Conditions To perform state display the following conditions must be satisfied i The target MV and RV are paired i The target MV or RV has been registered in the volume list iii The volume list is not being created or updated iv Specifying a volume of a dynamic disk or a GPT format partition disk is not allowed Windows only v The iSM dedicated special file is not being created HP UX version UNIX only vi When an LVM volume group or a VxVM disk group is specified the target volume group or disk group must be active UNIX only vii When specifying the combination of an LVM volume group or a VxVM disk group with a special file name logical disk name you must specify the same number of logical volumes that make up the volume group or disk group as MV RV on the special file name logical disk name side In this case Copy is performed in specified sequential order UNIX only The above execution conditions except for 1 are not applicable when
201. ware i Displaying the volume list One of the following options can be selected d option Lists disk array information l option Displays information associated with all logical disks ys option Displays information only associated with specified disk arrays sorted by using special file name as the key Ifa specific special file name is specified the system displays information only associated with the specified 119 Chapter 4 Functions of ReplicationControl special file yl option Displays information only associated with specified disk arrays sorted by using logical disk number as the key Ifa specific logical disk number is specified the system displays information only associated with the specified logical disk number ve option Displays information only associated with specified disk arrays sorted by using logical disk name as the key Ifa specific logical disk name is specified the system displays information only associated with the specified logical disk name ctl option Lists the special file name and logical disk number of a control volume and the corresponding disk array name p option Displays the version information and the date when the volume list was created as property information of the volume list ax option Lists disk array information correspondence of all logical disks and property information of the volume list Displayed Information i When the r option is specified When
202. whether the system recognizes the disk array direct Disk array directly recognized by the system indirect Disk array which is not recognized by the system type OS type Idn Logical disk number Id_name Logical disk name attribute Logical disk attribute for the data replication and snapshot functions capacity Logical disk capacity When the d option is specified Logical disk information as shown below is listed Receiving disk_array_name management 173 Chapter 4 Functions of ReplicationControl Description Receiving Message indicating that data is being received During a joint operation with replication management this message 1s displayed until data has been received While data is being received the character is updated disk array name Disk array name management Identifies whether the system recognizes the disk array direct Disk array directly recognized by the system indirect Disk array which is not recognized by the system Execution Conditions To display the information of logical disks the following conditions must be satisfied i The logical disk attribute indicating the reserve attribute is not displayed i The logical disk attribute indicating the snapshot data volume SDV of the snapshot function is not displayed iii At least one logical disk of the target disk array is registered in the volume list iv The volume list is not being created or updated v The iSM dedicat
203. xecuted in another layer Execute it again after pair Separate is complete MV Monitoring Change the disk array of MV to the Monitored state and execute it Suspended again MV Force Unpaired Perform Forced Unpair for RV RV Force Unpaired Perform Forced Unpair for MV MV Outside 1SM Execute it for a pair under the iSM management Management RV Monitoring Change the disk array of RV to the Monitored state and execute it Suspended again All Link Path Abnormal Refer to 2 2 2 2 Link fault in the Data Replication User s Manual Installation and Operation Guide for Windows to recover from the failure Have been registered to Execute it for a pair that is not registered in the AT group AT group Snapshotting Execute it for a pair not in snapshot operation ii Summary Display Details Display For more information on this item refer to 3 2 6 Information Displayed on Execution Dialog 59 Chapter 3 Replication Management iii Active Mode Specify a Restore operation mode RV Protection Performs restoration without reflecting the updated data of the MV into the RV When the restoration is completed Separate is automatically executed To use this function for paired volumes located in the same disk array the DynamicDataReplication Ver2 is necessary and to use this function for paired volumes located in different disk arrays the RemoteDataReplication Ver2 is necessary RV Update Perform
204. y c 005 104 106 113 Volume SECIS DIAY wosecesinrecososd cabisceczocdcenseccbondemeesss 104 106 volume MOUN eee cecccecceecceecceeeceeeeeee 104 106 183 volume mount command eee ccecceeecceeeceeeeeeeeees 183 yolun YPE eee eee ee ee 111 volume UNMOUNL eee cc cecceecceesceeceeesseeseees 104 106 volume unmount command c cece eeeecceeceeeeeeeeees 185 W OY T I EE E E N PEIEE A TE E E 161 Walt COMMANA aiie a EEAS 161 Wall LOF STATS eene aeaea ai 104 106
205. y C omiman descrieri EEEE EEE EEEE 165 4 6 7 Specific Volume Name Display Command cccccccccccccccccccccecceceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeess 169 AY Fair Sette and Unpar Operations eeii ino Ee eE cesBicwiteseuscahee wheel meoudscexeeadeosBecxctosseaed 172 4 7 1 Logical Disk Information Display Command cccccceeeseeesseseeseeseseeeseeeeseeeeeseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 172 4 7 2 Par Unpar C onimand snae T EE 175 sS DERA 0 8 Vg Ope aois secie E E E 178 4 8 1 Command for Displaying Information on the Replication Function essesseennnnnnnnnenenenrererrerreerrerrerrrrreereee 178 A I 1S 01x 2310 1 01s eee een eee eee oe On eee nee eo ee nee nee eee eee etme eee eee ee 181 4 9 1 Ple Sovsen CGO e EEEE E 181 4 9 2 Volume Moun COMIN IC eessen E E E 183 4 9 3 Volimo Unmount Command sarosa E T a 185 4 9 4 Disk Sienature Operaion Command oa esos ses de geese cia state seannadiaseadsatasiadees dias diadasesnsadisaidsataseacve Ea EN 187 4 9 5 DEVICES Soan Comman ereen eE EEEE E EEEE EEEE 189 Index is sadociccvcdnslcaicedeviensivesuaicensdewunivossiccseudceungusnnnasaosnevensessuwedgensuasensbentoonstedseauenensensenstadedsbenidssstedesdanwenddagesseuseasoensesannenineases 190 This page is intentionally left blank Chapter 1 Data Replication Overview Chapter 1 Data Replication Overview To manage an enormous amount of information accumulated in business in a unified way and
206. y suspended in the disk array due to a copy fault in the Replicate or Restore state Copy between MV and RV is suspended To cancel the Suspend state due to a failure change the copy control state as you do to cancel the normal Suspend state after removing the cause of the copy fault Refer to 2 4 Copy Control State 21 Chapter 2 Data Replication 2 8 Freeze of Disk Arrays If the power to the disk array is turned off for maintenance access to the disk array is disabled disallowing to continue copy operation for the paired volumes in the disk array In this situation the data replication function for the disk array stops replication operations of the whole disk array Freezing of replication operations for the disk array due to power down of the disk array is called freezing of the disk array and the state is called the freeze state of the disk array When a disk array is in the freeze state replication operations between volumes to which the pair setting with the volume in the disk array is specified are also suspended and the copy control state of the pair becomes the freeze state When the pair is in the freeze state no new replication operation can be performed For pairs in the freeze state note the following e Freeze in the Separate state If the pair goes into the freeze state in Separate execution it transits to the Separate state due to a fault failure separation when the following operation is performed lt
207. ystem associate the file system with the drive by using the mount command of the disk control operation commands or by starting Disk Management Windows 3 If FAT16 FAT32 is used as a file system an attempt to write to RV ends up with an error Therefore do not use any application for automatically performing write operation for the drive Do not perform any operation e g changing of a partition configuration in which write to RV is performed through Disk Management Windows lt On the UNIX system gt When mounting a file system it is necessary to mount it by a read only specification The Not Available NA state has meaning when the VSS Volume Shadow copy Service function is used A transition to the Not Available state is automatically controlled by the VSS function The user need not perform the operation normally Copy Faults and State Transitions If copy operation between MV and RV is not performed normally due to a connection failure between them a transition to the following states may occur depending on the timing and type of the failure e Separate state due to a fault failure separation Forcefully separated in the disk array due to a copy fault The contents of MV and RV are completely different To cancel the Separate state due to a failure remove the cause of the copy fault and perform restoration by using Replicate and Restore e Suspend state due to a fault abnormal suspend Forcefull

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