As with the operation to release a TFO pair, the operation to recover a TFO pair is used for maintenance work when a RAID failure, a RAID close, or a bad sector occurs, or when the session status of the TFO pair becomes "Error Suspend".
After resolving the incident, recover the TFO pair to restart the synchronization of the volumes.
Point
Recover the TFO pairs of all TFOVs that belong to the failed RAID group. By recovering the TFO pairs, a synchronization between the paired volumes are performed with the initial copy. For the time required for an initial copy, refer to the following tables.
When operating a TFO group with the Active-Active configuration: "Table 9.9 Time Required for Initial Copy (Standard Value of 1 TB Physical Capacity Volume)"
When operating a TFO group with the Active-Standby configuration: "Table 9.10 Time Required for Initial Copy (Standard Value of 1 TB Physical Capacity Volume)"
Note
Synchronization with initial copy are performed from volumes of copy source storage device to volumes of copy destination storage device.
For the TFO group with the Active-Active configuration, the storage device side that the TFOG Role is "Local" is copy source and the storage device side that the TFOG Role is "Remote" is copy destination.
For the TFO group with the Active-Standby configuration, the storage device side that the TFO status is "Active" is copy source and the storage device side that the TFO status is "Standby" is copy destination.
Before performing the work in this section, confirm that the direction of the initial copy is correct.
The procedure to recover a TFO pair is as follows. This operation can be performed from both the Primary Storage and the Secondary Storage.
Click Storage on the global navigation tab.
Registered ETERNUS Disk storage systems are displayed on the Main pane.
On the Main pane, click the Name of a target ETERNUS Disk storage system.
On the Category pane, click Storage Cluster.
Created TFO groups are displayed on the Main pane.
On the Main pane, click the Name of a target TFO group.
The TFO group details screen is displayed on the Main pane.
On the Main pane, click the Volume tab.
The information for pairs of local volume and remote volume is displayed.
After checking the target volume checkbox to be recovered the TFO pair, click Recover Pair under TFOV on the Action pane.
The information confirmation screen is displayed.
After checking the displayed information, click Recover.
