Consistency Group Planning; Consistency Group For Pairs In One Primary And One Secondary System - Hitachi G200 User Manual

If initial copy is already started, and if a new initial copy is added, the
additional initial copy is started after the previously performed initial copy is
completed. The priority of all the initial copy operations being performed is
shown in the following table.
Starting order for
initial copy
1
2
3
4
5
6
Initial Copy Priority on the Edit Remote Replica Options window is
determined within the range of the number of initial copy operations
performed at the same time. Therefore, until the first initial copy operations
complying with the order set by Priority are completed, the additional initial
copy operations are not started.

Consistency group planning

Consistency groups allow you to perform one operation on all pairs in the
group. Consistency groups also ensure that all pairs are managed in a
consistent status.
A maximum of four storage system pairings can be placed in one consistency
group. You determine which pairs to include in a particular consistency group
based on business criteria for keeping status consistent across a group of
pairs, and for performing operations at the same time on the group.
Consistency group for pairs in one primary and one secondary
system
This topic describes how to create, update, and copy TC pairs in a consistency
group of one primary storage system and one secondary storage system.
3-16
Hitachi TrueCopy® User Guide for Hitachi Virtual Storage Platform Gx00 and Fx00 Models
Value set for
P-VOL
LUN 02 1
LUN 00 2
LUN 01 3
LUN 03 4
LUN 11 1
LUN 10 2
Planning for TrueCopy
Initial Copy
Priority
Previously scheduled.
Previously scheduled.
Previously scheduled.
Previously scheduled.
Scheduled later.
Scheduled later.
Remarks