Manual

Virtual LVI
You can assign Virtual LVI volumes to BC Z pairs, provided that the T-VOL has the same capacity
as the S-VOL.
Auto LUN
You can assign the following BC Z volumes to Auto LUN migration volumes:
• L1 P-VOL with up to two S-VOLs.
• L2 P-VOL with one S-VOL.
• Reserved volumes.
To assign or reserve BC Z volumes to Auto LUN migration volumes, complete the following:
1. Delete the BC Z pairs.
2. Unreserve the reserved BC Z S-VOLs.
3. Assign the BC Z volumes to Auto LUN migration volumes.
You cannot use BC Z volumes for destination volumes.
You cannot use migration, destination, and reserved volumes of Auto LUN for BC Z pair operations.
To perform BC Z operations, you must first release the Auto LUN volumes.
You can assign BC Z volumes as Auto LUN volumes, with the following restrictions:
• If the BC Z S-VOL is paired with three T-VOLs, you must delete the pair before migrating the
volumes with Auto LUN.
• If you want to assign BC Z volumes as destination volumes of a migration using Auto LUN, or
reserve BC Z volumes for Auto LUN, you must delete the BC Z volumes or un-reserve them
before using Auto LUN.
• If you assign a BC Z S-VOL that is paired with three T-VOLs as a migration volume, or assign
BC Z volumes to volumes other than Auto LUN migration volumes, the command is rejected.
• If you split a BC Z pair in which the volumes are assigned as migration volumes, migration
of those volumes is canceled.
Volume Retention
Access attributes and Business Copy Z operations
You can create BC Z pairs using volumes for which you set access attributes with Volume Retention.
However, depending on the access attribute, you cannot perform BC Z pair operations and reserve
attribute change operations.
The following tables show whether BC Z pair operations and reserve attribute change operations
can be performed for volumes for which access attributes are set with Volume Retention.
You can also set access attributes for BC Z P-VOLs, S-VOLs, and reserve volumes. See the following
tables for BC Z pair operations and reserve attribute change operations after access attribute
setting as well.
NOTE: The Volume Retention access attributes of volumes do not change as a result of BC Z
operations. Even though the Quick Restore operation reverses the P-VOL and S-VOL, the access
attributes of the P-VOL and S-VOL are not reversed.
32 Sharing Business Copy Z volumes