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

Performing TrueCopy for z/OS Configuration Operations 5-7
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
Adding an RCU
You can add up to four RCUs to each MCU and establish up to eight paths to
each RCU. You must add each CU as a separate RCU to each CU of the MCU.
The logical paths are established for the CUs of the MCU and RCU separately.
The maximum number of logical paths for each MCU is 32 (8 paths per RCU ×
4 RCUs per MCU).
The remote copy connections and MCU ports must be properly installed and
configured before you can add an RCU. When you add an RCU, the selected CU
of the connected MCU adds the specified CU as a TrueCopy for z/OS RCU and
establishes the specified number of logical paths to the RCU. After you have
added an RCU (and path status is normal), you can create TrueCopy for z/OS
pairs which have R-VOLs in the newly added RCU.
The Add RCU dialog box (see Figure 5-1) allows you to add an RCU to the
selected CU of the connected MCU. To open the Add RCU dialog box, select the
MCU&RCU display on the RCU Operation window, select the desired CU in
the tree, right-click the list, click the RCU Operation command, click the Add
RCU command, and then click the Add RCU (Fibre) command.