HP XP Racks - Manual (Page 279)

3. From the remote host, establish inter-disk controller logical paths (Remote -> Primary and
Remote -> Local).
4. From the remote host, register a command device for each of the storage systems at the remote,
primary, and local sites.
Creating a copy group
Using the copy groups in the following figures as examples, the following describes how to define
a copy group, create a copy pair, and register the copy pair in the EXCTG of the storage system.
Note that the CGIDs in the figure indicate copy group IDs.
Defining a 4x4x4 Cascade Configuration 279