HP XP Racks - Manual (Page 27)

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The microcode for both primary and secondary systems must support consistency groups
between multiple primary and secondary systems; otherwise, pair creation results in failure.
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You must install the version of RAID Manager that supports a consistency group consisting of
multiple MCUs and RCUs.
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Pair operations can be performed from RAID Manager only. Business Continuity Manager
and Remote Web Console do not support pair operations for pairs in a CG with multiple
XP7s.
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Cascade configurations with Continuous Access Journal pairs is not supported.
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You can assign pair volumes that belong to multiple virtual storage machines to a consistency
group consisting of multiple primary and secondary systems.
Assigning pairs to a consistency group
Pairs are assigned to a consistency group (CG) during the Paircreate operation. The procedure to
assign pairs depends on the number of XP7s in the CG, as follows:
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“Assigning pairs belonging to one primary and secondary system” (page 27)
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“Assigning pairs belonging to multiple primary and secondary systems” (page 27)
Assigning pairs belonging to one primary and secondary system
The method for assigning pairs to a consistency group differs according to the GUI used to create
the pairs:
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When using Remote Web Console, one consistency group is supported, # 127. See
“Consistency group 127” (page 30) for more information.
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When using RAID Manager, see the HP XP7 RAID Manager User Guide
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When using Business Continuity Manager, see the Business Continuity Manager User Guide
Assigning pairs belonging to multiple primary and secondary systems
Assigning pairs in multiple primary and secondary systems to a consistency group depends on
whether you are:
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“Using a new CG”
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“Using an existing CG”
RAID Manager is used when creating and assigning pairs to a consistency group on multiple XP7s.
Business Continuity Manager is not supported for this configuration
Using a new CG
You can assign new pairs or existing pairs to a new consistency group.
Procedure 2 To assign new pairs to a new consistency group
1. Create RAID Manager configuration definition file C for a multiple primary and secondary
system configuration.
2. Perform the paircreate operation according to configuration definition file C created in Step
1.
Procedure 3 To assign existing pairs to a new consistency group
1. Create RAID Manager configuration definition file A with which to use RAID Manager for pair
operations.
2. Perform the pairsplit operation according to configuration definition file A created in Step 1.
3. Perform the pairresync operation without designating a consistency group. Do this using
configuration definition file A.
4. Perform the pairsplit operation again using configuration definition file A.
Consistency group planning 27