About assigning ctgid/jnlgid for copy pairs, Configuring open and mainframe consistency groups – HP XP Array Manager Software User Manual
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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
• Copy group settings options (mainframe)
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
• About assigning CTGID/JNLGID for copy pairs
Configuring open and mainframe consistency groups
The use of consistency groups across open and mainframe systems is supported for the Cnt Ac-S copy
type when using HP StorageWorks P9000 for Business Continuity Manager Software on
XP24000/XP20000 and HP P9500 storage systems.
When creating new pairs
1.
In the Pair Configuration Wizard (open system), specify the Assign CTG option in the Edit Task
dialog box (4. Task Management page) when creating the open Cnt Ac-S pairs.
2.
Open the
copy-group-name
subwindow (open systems) and confirm the CTGID assigned for
the open Cnt Ac-S pairs you created.
User Guide
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