Hitachi HUS VM, User And Reference Manual

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Copy group creation
Specifying two device groups and creating a copy group. The same device
name must not be defined for any LDEVs in a specified device group. A copy
group can be created whether the LDEV in the device group is paired status
or not.
• Use cases
The following shows use cases that can be created a copy group.
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Creating a copy group in cases where two device groups are
configured of simplex volumes and the device names and the LDEV
numbers in the respective device groups are the same.
In the following example, when a copy group is created, the LDEVs
within the device names of A to A and B to B become a subject of pair
operation.
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Creating a copy group in cases where two device groups are
configured of paired volumes and the device names and the LDEV
numbers in the respective device groups are the same.
In the following example, although pairs have been created on the
device names of A to A and B to B, a copy group can be created.
LDEV addition to a copy group
Adding an LDEV to a device group by specifying a device group name forming
a copy group. It is not possible to add LDEVs directly to the copy group.
With the same device name, the operation for the device group associated
with a copy group cannot be performed.
CCI functions
3-45
Command Control Interface User and Reference Guide