Workflow For Setting The Raid Level; Bc Z Pair Deletion; Prerequisites For Deleting Bc Z Pairs; Workflow For Deleting Bc Z Pairs - HP XP7 User Manual

Related topics
"System options that affect performance" (page

Workflow for setting the RAID level

Use the following process to return to the original RAID level for the S-VOL and P-VOL after a Quick
Restore when the RAID levels of the volumes are different.
1. Split the pair.
For more information about how to split pairs, see
2. Restore the pair using Quick Restore.
For more information about how to restore pairs using Quick Restore, see
or restoring BC Z pairs" (page

BC Z pair deletion

Delete the BC Z pairs that you no longer need. Deleting a pair unpairs the P-VOL and S-VOL but
does not delete their data. You can use the volumes of deleted pairs in another pair.
If you are sharing BC Z S-VOLs with Cnt Ac-J Z P-VOLs and you plan to perform a CG pair-split,
register the split time for a BC Z CG before you delete the pair. The registered split time is deleted
when you delete the following pairs:
The BC Z pairs that are assigned to the BC Z CG.
The Cnt Ac-J Z pairs that are assigned to the Cnt Ac-J Z R-JNL, which is the journal volume on
the secondary storage system associated to the S-VOL.
Related topics
"Prerequisites for deleting BC Z pairs" (page 60)
"Deleting BC Z pairs" (page 61)
"Monitoring BC Z pair activity and status" (page
"MP blades and deleting pairs" (page

Prerequisites for deleting BC Z pairs

The pair must be unpaired and not in the process of being deleted and the volumes are not in the
process of being unpaired ("Deleting/TRANS" status).

Workflow for deleting BC Z pairs

Use the following workflow to delete a BC Z pair:
1. Ensure that all of the write I/O operations to the P-VOL have completed and that all secondary
host applications that access the P-VOL have stopped.
2. Set the P-VOL offline.
3. Verify that the BC Z pair is unpaired and not in the process of being unpaired
("Deleting/TRANS" status) using BCM, PPRC, RWC, or RAID Manager.
4. Split the BC Z pair.
For more information about splitting BC Z pairs, see
5. Delete the BC Z pair.
For more information about deleting BC Z pairs, see
60 Managing Business Copy Z pairs
33).
"Splitting BC Z pairs" (page
57).
64).
62).
"Splitting BC Z pairs" (page
"Deleting BC Z pairs" (page
50).
"Resynchronizing
50).
61).