Volumes can be backed up while applications using them are running.
The following three backup methods are available.
Slice detachment
Synchronization (GDS Snapshot required)
OPC (GDS Snapshot required)
The following figure shows the procedures for backing up mirror volumes through snapshot by slice detachment.
Figure 5.5 Backup Operation (by Slice Detachment)
Note
Use Conditions on Snapshot by Slice Detachment
Slices can be detached only from mirror volumes with physical slices. In other words, if disks are not connected directly to mirror groups, creation of snapshots by slice detachment is impossible.
See
For snapshot by slice detachment, see "1.3.8 Snapshots by Slice Detachment."
For details on the operation methods, see "5.3.2.1 Backup (by Slice Detachment)."
The following figure shows the procedures for backing up volumes through use of snapshots (proxy volumes) of GDS Snapshot created by synchronization.
Figure 5.6 Backup Operation (by Synchronization)
Note
Snapshot by Synchronization Limitation
Snapshots by synchronization can be created only if the master and proxy type is mirror or single. For details, see "A.1.8 Proxy Configuration Preconditions."
See
For snapshot by synchronization, see "1.5.1 Snapshot by Synchronization."
For details on the operation methods, see "5.3.2.2 Backup (by Synchronization)."
The following figure shows the procedures for backing up volumes through use of snapshots (proxy volumes) of GDS Snapshot created by OPC.
Figure 5.7 Backup Operation (by OPC)
See
For snapshot by OPC, see "1.5.3 Instant Snapshot by OPC."
For details on the operation methods, see "5.3.2.3 Backup (by OPC)."
