HP XP P9000 for Business Continuity Manager Software User Guide (T5253-96081, July 2013)

4. From the primary host, register a command device for the forward direction for the storage
systems at the primary site and intermediate site.
5. From the primary host, establish an inter-disk controller logical path (Intermediate → Remote).
6. From the primary host, register a command device for the storage system in the forward
direction at the remote site.
Defining a 3DC Cascade (Cnt Ac-J Z x Cnt Ac-J Z) configuration 167