Hitachi TrueCopy for IBM z/OS User and Reference Guide (T5211-96001, June 2007)

5-2 Performing TrueCopy for z/OS Configuration Operations
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
RCU Operations
The RCUs are the control units which control the R-VOLs of the TrueCopy for
z/OS pairs. The RCUs are connected to the MCUs via the remote copy
connections and receive and process commands from the MCUs. For TCz
operations, the USP V Storage Navigator should be installed on a separate LAN
at the remote site to allow TrueCopy for z/OS commands to be issued directly
to the RCU (e.g., in case of disaster or failure at the primary site).
The MCUs are the control units which control the M-VOLs of the pairs. The
MCUs receive and process user-requested TrueCopy for z/OS commands from
the Storage Navigator, and send the remote copy operations to the RCUs. The
MCUs can also function as RCUs, provided the remote copy connections are
properly configured.
The RCU operations are performed separately for each CU of each MCU and
RCU to provide maximum flexibility in TrueCopy for z/OS configurations. The
RCU operations are:
• Configuring the host interface ports for MCU-RCU connection
• Adding an RCU
• Changing the RCU options
• Adding and deleting logical paths to an RCU
• Adding and deleting SSIDs for an RCU
• Viewing RCU status
• Deleting an RCU
The RCU Operation window allows you to perform the RCU operations. All
operations performed on the RCU Operation window have a common
procedure.