A configuration example of when the replication operation uses the Storage Cluster Continuous Copy function is shown below.
Figure 7.8 Configuration Example of Replication Operation Using Storage Cluster Continuous Copy Function
Using 1 physical disk that constitutes a storage pool for transactions, the entire disk is registered.
Including the backup storage pool, backup can preserve a maximum of 2 generations.
Business server (Managed Server): SV-1
Backup server (Management Server): BKSV (name for registration in AdvancedCopy Manager)
Transaction storage pool: STP1
Backup storage pool: STP1B
Disk
Physical Disk | Connection Server | Device Type | Device Name | Purpose (Storage Pool) |
|---|---|---|---|---|
Transaction VOL | SV-1 | LU | c1t1d1 | Transaction storage pool (STP1) |
Backup VOL-1 | BKSV | LU | c2t1d11 | Backup storage pool (STP1B) |
Backup VOL-2 | BKSV | Slice | c2t1d12s1 | Backup volume for older generations |
Note
With the method for performing an online backup using the "zfs send" and "zfs receive" commands and the ZFS snapshot function, the AdvancedCopy Manager Copy Control Module cannot be used. When performing an online backup by using the Storage Cluster Continuous Copy function, use the replication management function of the AdvancedCopy Manager.
Point
REC between the backup storage pool and the backup volume is not supported.
Locate all devices in the same TFO group.
Refer to "G.3.3 Preparations" for details.
Backup
Refer to "Full Backup" and "Differential Backup" in "G.3.4 Operation" for details.
Restore
Refer to "Restoration from Latest Generations" and "Restoration from Older Generations" in "G.3.4 Operation" for details.
However, when backing up from previous generations, the following procedure is required.
When executing an Advanced Copy from the backup storage pool to the backup volume, stop that session.
Restore from the backup volume to the transaction storage pool.
Refer to "Appendix G Backup and Restoration of ZFS File Systems" for details.
Point
When the status of the TFO group is "Normal" and Advanced Copy cannot operate on either the Primary Storage or Secondary Storage, the command may terminate abnormally. Check the cause of the error on both the Primary Storage and Secondary Storage to address the error message in the storage device where the error is occurring.
When the status of the TFO group is "Normal" and its phase is "Maintenance", or when the status of the TFO group is "Halt", the command executes Advanced Copy on the storage device that has an "Active" TFO status and terminates normally. However, Advanced Copy could not be executed on the storage device that has a "Standby" TFO status. In this case, swsrp2882 message may be output.
If a swsrp2882 message is output, after the status of TFO group has become "Normal" and the phase is not "Maintenance", refer to "7.10 When Recovering Storage Cluster Continuous Copy Function" to take action.
Advanced Copy cannot be operated during a failover or a failback.
If the volume that is the target of Storage Cluster or the TFO group of the volume is changed, refer to "7.11.2 When Changing Storage Cluster Target Volume" and register the replication volume again.
For TFOVs that are not synchronized between the Primary Storage and Secondary Storage, the following commands cannot be executed:
swsrpstartsync command
swsrpmake command
swsrprevsync command
When the TFO status on the Secondary Storage is "Active", the following commands cannot be executed as well:
swsrpstat command
swsrpcancel command
To check the status of Advanced Copy and stop the session, use Web Console or AdvancedCopy Manager Copy Control Module commands.
For using Web Console
Refer to "Display/Forcible Suspend/Forcible Cancel Copy Session" in the Web Console Guide.
For using AdvancedCopy Manager Copy Control Module commands
accopy query command
accopy fcancel command
Refer to "Command References" in the AdvancedCopy Manager Operation Guide for Copy Control Module for information on the commands.
