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10400414-002 05/2013

©2013 Overland Storage, Inc.

 

 3-2

 SnapSAN S5000 Data Migration User Guide

 

 Figure 3-2: Software Configuration

Phases

Execution of migration is divided into the following phases: pre-migration processing, 
migration processing, and post-migration processing.

Pre-migration processing

Make preparations for data migration.

Migration processing

Migrate data and operations.

Usually, repeat migration until all the target logical disks are migrated.

Post-migration processing

Follow up data migration.

Preparation for Data Migration

This flow chart shows an overview of the pre-migration processing. 

Содержание SnapSAN S5000

Страница 1: ...Overland Storage SnapSAN Data Migration User Guide S5000 May 2013 10400414 002...

Страница 2: ...ROPRIETARY NOTICE All information contained in or disclosed by this document is considered proprietary by Overland Storage By accepting this material the recipient agrees that this material and the in...

Страница 3: ...ed SCSI SAS Serial ATA SATA Storage Area Network SAN and Redundant Array of Independent Disks RAID technology Product Documentation and Firmware Updates Overland Storage prod_name product documentatio...

Страница 4: ...lements important points of the main text A note supplies information that may apply only in special cases for example memory limitations or details that apply to specific program versions IMPORTANT A...

Страница 5: ...Preparation for Data Migration 3 2 Details of Pre Migration Processing 3 3 Failed Data Migration 3 5 FC Connection 3 5 Migration Processing Stopping the Server 3 8 Unmount the logical disk 3 10 Migrat...

Страница 6: ...SnapSAN 5000 Data Migration User Guide 10400414 002 05 2013 2013 Overland Storage Inc 1 2 Appendix A Notes Appendix B Licenses Apache License B 1 Flex License B 1 OpenSSL License B 1 Index...

Страница 7: ...ine means of migrating data in individual cases To address this a new function is provided to facilitate data migration from an existing disk array to a new disk array Features The data migration func...

Страница 8: ...ray Input output to from the source logical disk must be completely stopped during data migration Select whether to migrate data stopping operations without stopping the server or to migrate data stop...

Страница 9: ...source disk array are connected via the FC switch 3 When migrating the disk array and the application server from the environment where the application server and the source disk array are connected d...

Страница 10: ...torage Inc 1 4 SnapSAN S5000 Data Migration User Guide 5 When migrating the disk array the application server and the FC switch from the environment where the application server and the source disk ar...

Страница 11: ...talled Data migration is supported only when the source and destination disk arrays are connected by FC Disk Array Connection Configuration The following disk array connection patterns are supported f...

Страница 12: ...ng which the application server is stopped Determine the migration method to use by referring to the flowcharts shown below Data Migration Method Advantages Disadvantages Data migration stopping opera...

Страница 13: ...002 05 2013 2013 Overland Storage Inc 2 3 SnapSAN S5000 Data Migration User Guide Figure 2 1 Determination of Data Migration Method FC Direct Connection Configuration Data Migration States and State T...

Страница 14: ...d from the source logical disk to the destination logical disk Migrating stop The instruction to stop copying the data is issued and the remaining data is being copied from the source logical disk to...

Страница 15: ...10400414 002 05 2013 2013 Overland Storage Inc 2 5 SnapSAN S5000 Data Migration User Guide Figure 2 2 Data Migration State Transition Diagram...

Страница 16: ...quired performance requirements and disk capacity A configuration example of hardware components for using the data migration function is shown below Figure 3 1 Hardware Configuration Software Configu...

Страница 17: ...ation processing migration processing and post migration processing Pre migration processing Make preparations for data migration Migration processing Migrate data and operations Usually repeat migrat...

Страница 18: ...erver Storage Agent Utility or ControlCommand PathManager Management server SnapSAN Manager when SnapSAN Manager Express is not used 3 Unlock the licenses of DataMigration and required program product...

Страница 19: ...has completed successfully ExitStatus 0 iSMcfg nickname ldn 0ffeh newname Pooll0000_MSV0FFE iSM31001 nickname Please wait for a moment iSM31000 nickname Command has completed successfully ExitStatus 0...

Страница 20: ...e of OS the uses the logical disk 5 Assign a logical disk name corresponding to the source logical disk name so that that you can easily see the relationship between the source and the destination log...

Страница 21: ...only from the environment where the application server and the source disk array are connected via the FC switch If the destination disk array has one or more empty host connection ports and the FC s...

Страница 22: ...rom the environment where the application server and the source disk array are connected via the FC switch If the destination disk array has one or more empty host connection ports and the FC switch h...

Страница 23: ...cution example Setting Access Control on the source disk array 1 After selecting the source disk array select Bind Configuration setting from the main window menu of SnapSAN Manager to open the Config...

Страница 24: ...ource logical disk 2 Stop the cluster in the case of cluster operation 3 Stop the operation applications that are using the migration target logical disk 4 Select the manual start setting in the case...

Страница 25: ...example Detach the database sqlcmd E b Q EXEC sp_detach_db database name This step is not necessary if the database is stopped because the cluster was stopped Unmount the logical disk This step is no...

Страница 26: ...array are connected through FC duplicated iSMmc_ldlist wwnlist command execution example Port Connection Relationship h In addition check that the vendor name is displayed in the Vendor column When th...

Страница 27: ...and 200000004C7F0832 200400004C7F0832 0000h 50 0 GB EXP167_DATA_1 0100h 00004C7F08320100 0001h 50 0 GB EXP167_LOG_1 0101h 00004C7F08320101 0002h 50 0 GB EXP167_DATA_2 0102h 00004C7F08320102 0003h 50 0...

Страница 28: ...iSM36001 Command has completed successfully ExitStatus 0 2 Execute the iSMmc_pair list to check that combinations of paired logical disks are correct The following example indicates logical disks name...

Страница 29: ...7_DATA_1 srcflg ld Source Volume LD Name EXP167_DATA_1 DI 00004C7F08320100 Size 50 0 GB Destination Volume LD Name EXP167_DATA_1_NEW DI 0009910502430300 Size 100 0 GB Activity State Migrate Migration...

Страница 30: ...ing Step 6 on page 3 5 the pre migration processing 7 Create new LD sets on all the servers with the Access Control function on the iSM client screen GUI or the CLI iSMCLI in the destination disk arra...

Страница 31: ...splayed in the volume list Command example mount t ext3 special file name mountpoint 6 Restore and start the database For Oracle a When migrating the application server copy the directories previously...

Страница 32: ...server 4 To use a logical disk name unique within the system for operation allocate the logical disk name used on the source disk array to the destination logical disk name 5 To manage the source and...

Страница 33: ...operation applications that are using the migration target logical disk 3 Select the manual start setting in the case of cluster operation 4 Stop and delete the database For Oracle a Stop the database...

Страница 34: ...is not automatically mounted at OS startup in addition to unmounting the logical disk with the MOUNTVOL P command 6 Delete the database and disk monitor settings in the case of cluster operation 7 Sh...

Страница 35: ...tus 0 Port Connection Relationship 4 In addition check that the vendor name is displayed in the Vendor column When the vendor name is displayed the logical disks in the source disk array are recognize...

Страница 36: ...and 200000004C7F0832 200400004C7F0832 0000h 50 0 GB EXP167_DATA_1 0100h 00004C7F08320100 0001h 50 0 GB EXP167_LOG_1 0101h 00004C7F08320101 0002h 50 0 GB EXP167_DATA_2 0102h 00004C7F08320102 0003h 50 0...

Страница 37: ...iSM36001 Command has completed successfully ExitStatus 0 Execute the iSMmc_pair list to check that combinations of paired logical disks are correct The following example indicates logical disks named...

Страница 38: ...7_DATA_1 srcflg ld Source Volume LD Name EXP167_DATA_1 DI 00004C7F08320100 Size 50 0 GB Destination Volume LD Name EXP167_DATA_1_NEW DI 0009910502430300 Size 100 0 GB Activity State Migrate Migration...

Страница 39: ...sing 2 Create new LD sets on all the servers with the Access Control function on the SnapSAN Manager client screen GUI or the ControlCommand SnapSAN ManagerCLI in the destination disk array and assign...

Страница 40: ..._HOME dbs cp rp mountpoint of destination logical disk admin ORACLE_BASE cp rp mountpoint of destination logical disk diag ORACLE_BASE This step is not necessary if the application server is not migra...

Страница 41: ...sk names are not allowed So rename the source logical disk for example from DATA_1 to DATA_1_OLD and then rename the logical disk name in the destination disk array for example from DATA_1_NEW to DATA...

Страница 42: ...command oradim delete sid SID name This step is not necessary if the application server is not migrated For SQL Server example a Detach the database sqlcmd E b Q EXEC sp_detach_db database name 4 Unm...

Страница 43: ...fc_host Assuming that host0 and host1 are reported here echo 1 sys class fc_host host0 issue_lip echo 1 sys class fc_host host1 issue_lip c Update and display the volume list and check that the logic...

Страница 44: ...manual This step is not necessary if the application server is not migrated For SQL Server example a Attach the database sqlcmd E b Q EXEC sp_attach_db database name mdf file path ldf file path 9 Che...

Страница 45: ...Bind Disk Array Host Connection Port Port setting FC from the main window menu of SnapSAN Manager Embeded or SnapSAN Manager 2 Select the port used for data migration from the port list displayed on t...

Страница 46: ...migrated stopping operations 3 Connect the application server and the source disk array through FC This step is not necessary if the application server and the source disk array have already been conn...

Страница 47: ...ame Description iSMmc_ldlist Listing information about logical disks and disk arrays used for data migration iSMmc_query Displaying the status of data migration iSMmc_pair Setting and releasing the pa...

Страница 48: ...Start 2011 11 19 22 25 20 SRC dev001 iSMmc_start Info iSM36006 Migrate Normal End 2011 11 19 22 25 28 SRC dev001 iSMmc_start Info iSM36005 Migrate Start 2011 11 19 22 25 29 SRC dev002 iSMmc_start Info...

Страница 49: ..._number wwnn wwpn wwnn wwpn vendor_name Description local_port_number Host director number Port number of the local disk array port that is set as the port for data migration WWNN World Wide Node Name...

Страница 50: ..._progress Start Time start_time End Time end_time Remained Copy Time remained_copy_time Level level Previous Migrated Time previous_migrated_time Description src_logical_disk_name LD name of the sourc...

Страница 51: ...disk and its volume type Forced cancelation force Even if normal pair cancellation is not allowed for example when connection between disk arrays fails you can cancel the pair specifying the force op...

Страница 52: ...e type of the source and destination logical disks by using a device identifier The following operations cannot be carried out when the destination logical disk is used as a master volume MV or replic...

Страница 53: ...tion function Starting Data Migration The iSMmc_start command starts data migration Start copying data to the destination paired with the source using the iSMmc_start command Main options The iSMmc_st...

Страница 54: ...ance of the source and destination logical disks and configuration of the connection between the source disk array and destination disk array During data migration stopping operations the ongoing oper...

Страница 55: ...ts volume type Specify the condition for terminating the waiting cond Completion of data migration cond migrated Waits for the data migration to be completed Specify the time interval to monitor the p...

Страница 56: ...ayed Description disk_array_name Displays the disk array name level Displays the speed level set to the displayed disk array Changing the Data Migration Settings The iSMmc_change command changes the d...

Страница 57: ...lume stopped during data migration Prevent access to the destination volume during data migration To use the data migration function a data migration reserved volume must be created for a control logi...

Страница 58: ...ditions for use reproduction and distribution see http www apache org licenses LICENSE 2 0 Flex License For a copy of the license see http arcib dowling edu cgi bin info2html flex info gz Copyright Op...

Страница 59: ...are Configuration 3 1 I iSMmc_change 4 10 iSMmc_ldlist 4 1 4 2 iSMmc_pair 4 5 iSMmc_query 4 1 4 3 iSMmc_resume 4 1 4 9 iSMmc_setconfig 4 1 4 9 4 10 iSMmc_start 4 2 4 7 iSMmc_stop 4 1 4 8 iSMmc_suspend...

Страница 60: ...ide 10400414 002 05 2013 2013 Overland Storage Inc 1 2 rollback 3 5 S Software Configuration 3 1 software update PR iii suspended 2 4 System Configuration 3 1 T technical support PR iii typographical...

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