Creating the command devices
A command device (CMD) is required on each storage system for
communication between CCI and the storage system. The command device
must be created in resource group 0 in the primary system and in the
secondary system. After the command devices have been created, host
recognition must be set to the command devices.
4-10
Configuration and pair management using CCI
Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide