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
P-VOL
Value set for
Initial Copy
Priority
Remarks
1 LUN 02 1 Previously scheduled.
2 LUN 00 2 Previously scheduled.
3 LUN 01 3 Previously scheduled.
4 LUN 03 4 Previously scheduled.
5 LUN 11 1 Scheduled later.
6 LUN 10 2 Scheduled later.
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
Planning for TrueCopy
Hitachi TrueCopy® User Guide for Hitachi Virtual Storage Platform Gx00 and Fx00 Models
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