HP XP P9500 User Manual page 64

In a delta resync configuration, if you release the Continuous Access Synchronous pair, the
Continuous Access Journal delta resync pair will be released as well. If you release the
Continuous Access Journal pair, the Continuous Access Journal delta resync S-VOL is released.
If Continuous Access Journal secondary data volumes are physically attached to the same host
server(s) as the Continuous Access Journal primary data volumes, the following problem can
occur:
When a Continuous Access Journal pair is released, the older, secondary data volume is
usually offline. If the host is then restarted, the system administrator may be offered both
volumes and asked which volume should be left offline. This can be confusing and is prone
to error.
If the Continuous Access Journal secondary data volumes and primary data volumes are
connected to the same host(s), HP strongly recommend that the secondary data volumes are
defined to remain offline to avoid this problem.
To delete a pair or pairs
1. In Remote Web Console, select Actions > Remote Copy > Continuous Access Journal > Pair
Operation.
2. Click
3. In the tree, the port or host group for the pair. Associated pairs display in the right-side list
area.
4. In the list, select the pair or pairs that you want to delete, right-click, and select Pairsplit-S from
the menu. The Pairsplit-S dialog box displays.
5. From the Range list, select one of the following. Note that the Range list is disabled if a pair's
status is SMPL; In this case, Range is automatically set to LU. If a pair's status is Deleting or
Suspending, Range is automatically set to Mirror.
LU, to delete only the selected pair.
Mirror, (default) to delete all pairs in the same mirror as the selected pairs.
If the following two conditions are satisfied and you select Apply, a warning message
appears and processing cannot continue.
- The Preview list contains two or more pairs belonging to the same mirror.
- The Range column shows Mirror for at least one of the above pairs.
To be able to continue processing, do either of the following:
- Ensure that the Range column shows LU for all pairs in the same mirror.
- In the Preview list, select one pair in one mirror, and then other pairs in the mirror is
excluded.
CAUTION:
during disaster recovery.
64 Pair operations
to change the mode from View to Modify.
Do not use the Mirror option when deleting pairs from the secondary system