Copy group containers – HP XP Racks User Manual

Page 29

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Figure 4 Effect of suspending an open/MF consistency group

When the YKSUSPND command is issued from Business Continuity Manager for a mainframe-system
copy group, open-system copy groups and mainframe-system copy groups within the same
consistency group are suspended at the same time.

For details about defining the Continuous Access Synchronous Open/MF Consistency Preservation
Function, see

“Defining a configuration so that the Open/MF Consistency Preservation function

can be used” (page 287)

.

Copy group containers

A copy group container (CG container) is similar to a copy group, although instead of grouping
a set of copy pairs that have the same copy type, it groups a set of copy groups composed of
pairs that have the same copy type. When an operation is performed on a CG container, it is
performed on all of the pairs included in the container.

CAUTION:

Because Business Continuity Manager actually sends instructions to the storage system

for each of the C/T groups included in a copy group container, consistency of each included
consistency group on the primary site and on the secondary site is preserved. However, consistency
between consistency groups in the copy group container is not preserved, except for extended
consistency groups. Extended consistency groups are described in section

“Extended consistency

groups” (page 30)

.

Defining a copy group container is explained in

“Defining a copy group” (page 641)

.

Grouping to simplify volume operations

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