HP XP7 Business Copy for Mainframe Systems User Guide (TK913-96001)

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.