HP XP P9500 Storage - Manual (Page 77)

•
If you plan to delete all pairs in the journal and then create another pair, be sure to wait at
least one minute after deleting the pairs before creating the new pair.
•
Perform pair deletion when write I/O load is low to reduce impact on performance. Operations
on pairs with different status in the same mirror may result in suspension during periods of
heavy write I/O.
•
If you delete pairs in DUPLEX status and other than DUPLEX status in the same mirror, an
unexpected suspension could occur during the operation under heavy I/O load conditions.
You can estimate whether the I/O load is heavy or not from frequency of host I/Os. This
operation should be performed under light I/O load conditions.
•
In a delta resync configuration, if you release the Cnt Ac-S Z pair, the Cnt Ac-J Z delta resync
pair is released as well. If you release the Cnt Ac-J Z pair, the Cnt Ac-J Z delta resync S-VOL
is released.
Procedure 15 To delete pairs
1. In the Remote Web Console main window, select Actions > Remote Copy > Continuous Access
Journal Z > Pair Operation.
2. Click to change the mode from View to Modify.
3. In the tree, a CU group number or CU image number for the pair.
4. In the list of associated pairs in the right pane, right-click the pair or pairs that you want to
delete and select Delete Pair.
5. In the Delete Pair dialog box Range list, select one of the following:
•
Volume, to delete only the selected pairs.
•
Mirror, (default) to delete all pairs in the same mirror as the selected pair.
If you are deleting some pairs in a mirror but not all, you must select Volume for each of
these pairs. Do not select Mirror in this case, otherwise an error occurs.
If the pair’s status is Simplex, the Range field is disabled and automatically set to Volume.
It is automatically set to Mirror if the pair’s status is Deleting or Suspending.
6. From the Delete Mode list, select one of the following:
•
Normal, to delete pairs only if the primary system can change the pair status of both
P-VOL and S-VOL to Simplex.
•
Force, to forcibly delete pairs even when the primary system cannot communicate with
the secondary system. If the primary system cannot to communicate with the secondary
system, specifying Force allows host operations to continue.
If you select Force when pair status is other than Simplex, Range is automatically set to
Mirror.
Deleting pairs 77