HP XP P9500 Storage - Manual (Page 111)

3. In the tree for the Pair Operations window, select the port or host group where the pairs or
volumes are located.
Related volumes display in the volume list. If a volume is already paired, pair information also
displays.
4. In the volume list, select the pairs to be resynchronized, right-click, and select Pairresync.
5. In the Pairresync dialog box, select the Resync Type as follows:
•
Normal Copy(P->S) to resynchronize the pairs normally. All differential data is updated
to the S-VOL.
•
Quick Resync(P->S) to immediately change pair status to PAIR. Resynchronization of data
does not occur immediately. Differential data is copied during update copying.
•
Reverse Copy(S->P) to copy the S-VOL data to the P-VOL. All differential data is updated
to the P-VOL. Not available for L2 pairs.
•
Quick Restore(S->P) to swap the P-VOL and S-VOL. Any differential data between the
volumes is copied during update copying. Not available for L2 pairs.
6. From Copy Pace, select the pace at which the pairs are to be resynchronized, Slower, Medium,
or Faster. Copy Pace affects the host I/O performance: a slower pace minimizes impact, a
faster pace has the greatest impact. The pace you select is applied for all pairs in the operation.
7. Click OK.
8. In the Pair Operation window, review the information in the Preview list. To change a selection,
right-click it, select Modify, and make any changes.
9. Click Apply to commit the operation to the storage system.
Make sure that pair status changes to PAIR before attempting any other operation.
NOTE: Note the following.
•
If the reverse or quick restore operation ends abnormally, the pair status changes to PSUE. In
this case, the P-VOL is read/write-enabled for all hosts, but the data is not guaranteed. The
S-VOL remains write-disabled (read-only) and data is not guaranteed. The status of other pairs
sharing the same P-VOL does not change.
Deleting pairs
You can delete a pair when you no longer need it. When you delete a pair, the P-VOL and S-VOL
return to their SMPL state, though their data remains intact. After deletion, both volumes are available
for use in another pair.
Deleting pairs 111