HP XP Racks - Manual (Page 37)

5 Managing Business Copy Z pairs
This chapter provides instructions for completing BC Z pair user tasks using the RWC and information
on ATTIME Suspend using BCM.
Workflow for managing Business Copy Z pairs
During most pair user tasks, the P-VOL remains available to the host for I/O operations. You must
have Storage Administrator (Local Copy) role to complete BC Z pair user tasks.
Use the following workflow to complete pair user tasks:
1. Check the pair status (see “BC Z pair status checks” (page 37) ).
For more information about the required status for pair user tasks, see “Pair status and supported
pair user tasks” (page 68) .
2. Create the BC Z pairs (see “BC Z pair creation” (page 38) ).
3. (Optional) Suspend the BC Z pair creation.
For more information about suspending BC Z pair creating, see “Suspending BC Z pair
creation” (page 45) .
4. (Optional) Suppress update copy operations during pair restoration (see “Suppressing update
copy operations during pair restoration” (page 61) ).
5. Split the pairs. You can do the following:
•
Split BC Z pairs (see “Splitting BC Z pairs” (page 50) ).
•
Split BC Z pairs in a CG (see “Workflow for consistency group pair-split” (page 52) ).
6. Resynchronize or restore the BC Z pairs (see “Resynchronizing or restoring BC Z pairs”
(page 58) ).
7. (Optional) If you have performed a Quick Resync on the pair (“DUPLEX” status), suppress copy
processing (see
“Suppressing update copy operations during pair restoration” (page 61) ).
8. Delete the BC Z pairs, which ends the pair relationship between the pair volumes (see “Deleting
BC Z pairs” (page 62) ).
In Business Copy Z, it might take a lot of time before a copy operation starts. This is because before
a copy operation starts, differential tables are initialized for the relevant pairs, one pair after
another, within the system. Especially when the pairs use a large volume of data, initialization can
be a very long process.
Related topics
•
“Workflow for managing CG IDs for Business Copy Z” (page 31) .
BC Z pair status checks
Check the BC Z pair status to determine if you can perform a task.
Related topics
•
For more information about pair status definitions and instructions for finding pair status, see
“Monitoring the Business Copy Z system” (page 64) .
•
For more information about maintaining your system, see “Monitoring BC Z pair activity and
status” (page 65) .
•
For more information about the tasks that you can perform based on pair status, see “Pair
status and supported pair user tasks” (page 68) .
Workflow for managing Business Copy Z pairs 37