HP XP P9500 Storage - Manual (Page 135)

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.
10. Make sure that pair status changes to DUPLEX before attempting any other operation.
NOTE: Note the following:
•
If the reverse or Quick Restore ends abnormally, the pair is suspended (Suspend/SUSPER
status). In this case, the S-VOL is read/write-enabled for all hosts, but the data is not guaranteed.
The T-VOL remains write-disabled (read-only) and data is not guaranteed. The status of other
pairs sharing the same S-VOL does not change.
•
After a reverse copy or Quick Restore operation is performed, make sure that the pair status
changes to DUPLEX before performing a Cnt Ac-S Z resume pair operation. If you perform the
Cnt Ac-S Z resume pair operation before the pair status changes to DUPLEX, the command
(resume pair operation) is rejected.
Deleting pairs
You can delete a pair when you do not need it. Deleting a pair unassigns the S-VOL and T-VOL
from the pair (SIMPLEX status) and their data remains intact. After deletion, both volumes are
available for use in another pair.
Prerequisite information
•
The pair cannot be in the process of Quick Split (V-Split/SUSPVS status).
•
When a pair is created, the processor blade allocated to the P-VOL's LDEV is also allocated
to the S-VOL's LDEV. When a pair is deleted, the processor blade that was originally allocated
to the S-VOL'S LDEV is allocated to it again. If the original processor blade was removed,
another processor blade is allocated.
•
To perform tasks such as pair operation or event waiting, after deleting a pair, wait 10
seconds—until the volume status changes from Deleting/TRANS to SIMPLEX as is unassigned
from the pair. If you do not wait 10 seconds, the operation might end abnormally.
1. Synchronize the S-VOL and T-VOL before deleting the pair. Complete the following:
1. Wait until all write I/Os to the P VOL are complete.
2. Set the S-VOL offline.
3. Split the pair. This copies differential data to the S VOL.
2. In the RWC, click Actions > Local Replications > BC Z/FC Z > Pair Operation.
3. Change to Modify mode by clicking the icon.
4. In the tree, in the Pair Operations window, select the CU image where the pairs or volumes
are located.
Related volumes are shown in the volume list. If a volume is already paired, pair information
is also shown.
5. Select the pairs you want to delete, right-click, and from the menu, select Delete Pair.
Deleting pairs 135