HP XP P9000 Command View Advanced Edition Software - Manual (Page 162)

Permitted topologies for cascade and multi-target configurations
The following restrictions apply when creating cascade or multi-target configurations or deleting copy
groups in cascade or multi-target configurations:
• When creating a cascade configuration, it is necessary to first create a higher-level copy group.
Higher-level copy groups cannot be added to lower-level copy groups
• When creating a cascade configuration, copy types and pair statuses of related copy groups must
be compatible
• When deleting copy groups from a cascade configuration, you must first delete all lower-level
copy groups before deleting a higher-level copy group
• The number of pairs that can be created varies depending on the storage system and copy type
Unsupported configurations (mainframe systems)
The following are a list of unsupported mainframe pair configurations. The Pair Configuration Wizard
cannot be initiated to perform operations to modify these configurations. The copy group definition
file should be edited directly since it is impossible to recover from these configurations using Replication
Manager.
Alternative configuration to im-
plement requirement
Requirement for configuration Unsupported configuration
None
To create a backup of only some
volumes.
The number of pairs at the cascade
source and cascade destination is
different.
The number of pairs in multi-target
configurations is different.
Use different copy groups for each
S-VOL if there are copy pairs using
the same P-VOL in the copy group.
To set up an SI multi-target config-
uration. Pairs in the copy group use the
same P-VOL.
None None
Pairs in the copy group use the
same S-VOL.
There are different types of copy
pairs in the same copy group.
Unify the P-VOLs using the same
storage system into the same
CTG*.
To perform an operation simultan-
eously on pairs that span multiple
storage systems.
The storage systems for the primary
volumes in the same copy group
are different.
Unify the S-VOLs using the same
storage system into the same
CTG*. The storage systems for the second-
ary volumes in the same copy
group are different.
Divide the destination copy groups
into multiple CTGs according to the
cascade source CTGs.
To perform an operation simultan-
eously on pairs that span multiple
storage systems, without maintain-
ing consistency.
The cascade configuration consists
of a container and a copy group.
Managing pair life cycle 162