HP XP P9500 Storage - Manual (Page 245)

4. From the primary host, register a command device for each of the storage systems at the
primary, intermediate, and remote sites.
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Setting up an environment at the remote site
1. From the remote host, define a path set consisting of inter-disk controller logical paths (Remote
→ Intermediate) (or use Remote Web Console to specify a path).
Defining a 4x4x4 Cascade Configuration 245