HP StorageWorks P9000 Replication Manager Software 7.1 CLI User Guide (TB584-96026, May 2011)

Figure 115 Processing flow for restoring storage groups from tape
Backing up storage groups to tape
Resynchronizing copy groups
When usual operation is in the split state, resynchronize the copy group before backing up the data.
When usual operation is in the pair status, there is no need to resynchronize the copy group before
backing up data. Instead, when the tape backup is complete, resynchronize the copy group to initialize
it.
To resynchronize a copy group:
• Clear the cache of the secondary volume.
Before performing backup, clear the system cache of the backup server.
To clear the system cache, execute EX_DRM_CACHE_PURGE on the backup server and mount
and then unmount the secondary volume. In this example, the copy group name is VG01,vol01.
BKServer > EX_DRM_CACHE_PURGE Operation_A -cg VG01,vol01
Cold backup
An example of backing up storage groups to tape in a cold backup is described below. In a cold
backup, the Information Store to be backed up is unmounted and remains inaccessible until the backup
completes. This is an example of performing a cold backup onto tape of an Exchange database. In
this example, an cold backup of storage group STORAGE_1 for the database server DBServer is
performed, and the backup is placed on the secondary volume. The backup is then backed up onto
tape from the secondary volume. The backup uses Operation_A as the operation ID.
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