HP XP P9000 Command View Advanced Edition Software - Manual (Page 160)

• Creating copy groups , page 162
• Supported copy group and container combinations , page 165
Copy group requirements for pair configuration (mainframe systems)
The following copy group requirements must be satisfied when creating or editing mainframe pair
configurations:
• The copy group must contain the DADIDs of both the primary and secondary volumes for the created
pair group.
• The primary and secondary volumes of all pairs in the pair group to be added must belong to the
same storage system as the primary and secondary volumes of the existing copy group. If the
storage systems are different, the CTG of an existing group should be set.
• The instance of BCM that owns the copy group must have access permissions.
• The copy group must be a primary host copy group.
• The copy group must be one for which the pair association has not been executed yet.
About assigning CTGID/JNLGID for copy pairs
Consistency groups and Journal groups can be configured for any asynchronous copy pair. Replication
Manager allows you to assign CTGID/JNLGID for copy pairs during pair creation (when associating
a pair group to a copy group). In order to change a CTGID/JNLGID, it is necessary to delete and
recreate the copy pair.
TIP:
Take note of the following:
• CTGID/JNLGIDs are independent among storage systems. Replication Manager assigns a new
ID on the storage system if the storage system of the new copy group is different from that of the
original copy groups.
• For mainframe systems, Replication Manager allows you to specify EXCTG options to maintain
consistency among multiple JNLGIDs in a Continuous Access Journal copy group.
Related topics
• Conditions for creating local copy pairs with the CTG option , page 160
• Copy group settings options (mainframe) , page 192
Conditions for creating local copy pairs with the CTG option
The following conditions apply when creating local copy pairs with the CTG (At-Time Split) option:
• The CTG option is available only when the prerequisite product versions are later than appropriate
version, so that Device Manager agent/P9000 RAID Manager can accept CTG option for local
copy.
• Pairs created with the At-Time Split option ( -m grp ) and pairs created without this option must
not be mixed in the same group defined in the P9000 RAID Manager configuration file. If such
pairs are mixed, the pairsplit operation might end abnormally, or S-VOLs of the P-VOLs in the
same consistency group might not be created correctly at the time when the pairsplit request is
received.
Related topics
Managing pair life cycle 160