Hitachi TrueCopy for IBM z/OS User and Reference Guide (T5211-96001, June 2007)

6-12 Performing TrueCopy for z/OS Pair Operations
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
Error Level option (Async only). Specifies the error level for the TCzA pair(s):
• Group: When the specified pair is suspended, all TCzA pairs in the same
group will be suspended, even if the failure affects only that pair and not the
entire group.
Important:
Select the Group error level for all TCzA volumes which are
essential to disaster recovery. Suspended TCzA R-VOLs which have the
Volume error level should not be used for disaster recovery.
• Volume: If the failure affects only the specified pair, then only that pair will
be suspended. A failure that affects an entire group will always result in the
suspension of all pairs in the group, as well as all other affected TCz pairs.
Note: The CESTPAIR TSO command also allows you to specify the error
level for TCzA pairs.