HP XP RAID Manager Software - Manual (Page 30)

Resynchronizing a pair
When a pair is resynchronized, the data in the data pool is deleted, and the V-VOL again mirrors
the current data in the P-VOL. A pairresync results in increased capacity in the data pool.
Prerequisite information
•
Pair status must be in PSUS status.
•
If the Snapshot data in the data pool is also used by a related pair, then only the Snapshot
ID is deleted for the resynchronized pair; the data is not deleted from the pool.
To resync a pair, use the RAID Manager pairresync command. See the HP P9000 RAID Manager
Installation and Configuration User Guide for instructions.
When the pairresync completes, pair status changes to PAIR.
Restoring a pair
Restoring a pair results in any Snapshot data in the data pool being copied back to the P-VOL.
This restores P-VOL data to the point when the pair was split.
Prerequisite information
•
Pair status must be PSUS.
•
Quick Restore is not supported for Snapshot.
To restore a pair, use the RAID Manager pairresync -restore command.
When the restoration completes, pair status changes to PAIR.
Deleting pairs
When you delete a pair, the Snapshot relationship ends between the P-VOL and V-VOL. Snapshot
data for the pair is deleted from the pool.
You can delete one pair—using RAID Manager, or multiple pairs—using Remote Web Console.
Prerequisite information
•
Pair status can be PAIR, PSUS, or PSUE.
•
When the pair is deleted, status changes to SMPL (PD). After a period of time, status changes
to SMPL.
You cannot recreate the pair if the status is SMPL (PD). To shorten the period when the pair is
in SMPL (PD) status, you need to delete the Snapshot data (resynchronize the pair), wait until
the pair status changes to PAIR, and then delete the pair.
•
The time used to delete a pair or pairs is several seconds to more than ten minutes. Time
increases when a large area of the pool is used for Snapshot data, or when multiple pairs
are deleted at the same time.
To delete a pair, use the RAID Manager pairsplit -S command.
To delete multiple pairs, use the Remote Web Console. You have two options:
•
“Deleting multiple pairs related to a port or host group” (page 30)
•
“Deleting multiple pairs related to a pool” (page 31)
Deleting multiple pairs related to a port or host group
1. In the Remote Web Console, click Actions > Local Copy > Business Copy/Snapshot > Pair
Operation.
2. Change to Modify mode by clicking the icon.
30 Pair operations