HP XP P9000 Continuous Access Synchronous for Mainframe Systems User Guide

group are resynchronized. Even if a Cnt Ac-S Z S-VOL is being accessed by a host, the pair
is nevertheless resynchronized with the others. Make sure to check the status of all pairs in
the consistency group before resynchronizing.
• If you use BCM to delete a Cnt Ac-S Z pair in an open/mainframe consistency group with
one primary and secondary system, only the Cnt Ac-S Z pairs are deleted. Use RAID Manager
to delete the Cnt Ac-S pairs.
Consistency group between multiple main and remote systems
• All requirements for a consistency group between one primary and one secondary system
apply to a consistency group between multiple primary and secondary systems.
• Both primary and secondary system must be XP P9500s. No other model can be used.
• A maximum of four primary and four secondary (paired) systems may be assigned to a
consistency group.
• The microcode for both primary and secondary systems must support consistency groups
between multiple main and remote systems; otherwise, pair creation results in failure.
• You must install the version of RAID Manager that supports a consistency group consisting of
multiple MCUs and RCUs.
• 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 XP
P9500s.
• Cascade configurations with Continuous Access Journal Z pairs is not supported.
Assigning pairs to a consistency group
Pairs are assigned to a consistency group (CG) during the Add Pair operation. The procedure to
assign pairs depends on the number of XP P9500s in the CG, as follows:
• “Assigning pairs belonging to one primary and secondary system” (page 42)
• “Assigning pairs belonging to multiple main and remote systems” (page 42)
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:
• When using RAID Manager, see the HP XP P9000 RAID Manager User Guide
• When using Business Continuity Manager, see the Business Continuity Manager User Guide
Assigning pairs belonging to multiple main and remote systems
Assigning pairs in multiple primary and secondary systems to a consistency group depends on
whether you are:
• “Using a new CG” (page 42)
• “Using an existing CG” (page 43)
RAID Manager is used when creating and assigning pairs to a consistency group on multiple
P9500s. 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.
42 Planning for Continuous Access Synchronous Z