HP XP P9500 Storage - Manual (Page 277)

4. From the local host, register a command device for each of the storage systems at the local,
primary, and remote sites.
Setting up an environment at the remote site
1. From the remote host, define a path set that consists of inter-disk controller logical paths (Remote
-> Primary and Remote -> Local) (or set these paths by using Storage Navigator).
2. From the remote host, define a route list (Remote -> Primary and Remote-> Local routes).
Defining a 4x4x4 Cascade Configuration 277