HP XP Racks - Manual (Page 164)

There are some requirements for copy types of the pair groups that can be added in multi-target or
cascade configurations, to be compatible with the copy type of the original pair group. In this case,
the copy type of the pair group to be connected by the Add Group operation must satisfy these
requirements to be compatible with the copy type of the original pair group. For details on copy type
requirements, see “
Copy type requirements for pair configuration definitions ” on page 164.
Related topics
• Copy type requirements for pair configuration definitions , page 164
• Permitted topologies for cascade and multi-target configurations , page 165
Copy type requirements for pair configuration definitions
The following requirements must be satisfied in order for copy types of pair groups added in multi-target
or cascade configurations, to be compatible with the copy type of the original pair group.
Requirements for the copy type when creating a multi-target configuration
Copy type of the pair group to be connected by group addition
Copy type of
the original
pair group
Continuous Ac-
cess Journal Continuous Access
Asynchronous
Continuous Ac-
cess Synchron-
ous
Snapshot
Business
Copy
Y Y Y N Y Business Copy
Y Y Y Y N Snapshot
Y N N Y Y
Continuous Ac-
cess Synchron-
ous
N N N Y Y
Continuous Ac-
cess Asynchron-
ous
N N N Y Y
Continuous Ac-
cess Journal
Legend:
Y: This type of pair group can be connected.
N: This type of pair group cannot be connected.
Requirements for the copy type when creating a cascade configuration
Copy type of the pair group to be connected by group addition
Copy type of
the original pair
group
Continuous Ac-
cess Journal Continuous Access
Asynchronous
Continuous Ac-
cess Synchron-
ous
Snapshot
Business
Copy
Y Y Y N Y Business Copy
N N N N N Snapshot
Managing pair life cycle 164