HP XP Racks - Manual (Page 187)

4. From the remote host, register a command device for the storage system of the remote site,
primary site, and local site, in that order.
For details on how to register a command device in a storage system, see “Registering a
command device in a storage system” (page 634) .
Creating a Copy Group (3DC Multi-Target Configuration)
To create a copy group:
1.
Define Continuous Access Synchronous Z and Continuous Access Journal Z copy groups at
the primary host where operation is to be performed.
2. Make a copy pair for the Continuous Access Synchronous Z and Continuous Access Journal
Z copy groups from the primary host.
Defining a 3DC Multi-Target (Cnt Ac-S Z x Cnt Ac-J Z) configuration 187