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

A-44 Using PPRC Commands for TrueCopy for z/OS
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
USP V Response Characteristics to Failure Conditions
The USP V supports the CGROUP command in the GDPS environment by
performing PPRC-compatible actions and returning PPRC-compatible messages
to failure conditions. Figure A.11 shows the failure conditions, and Table A-13
describes the response characteristics of the USP V to these failure conditions.
Note: The PPRC Support=Yes option must be selected on the RCU option
dialog box. If not, the host processor generates the system console message
that includes the SIM instead of the IEA494I or IEA491E message.
Host Processor at
Primary Site
Host Processor at
Secondary Site
Primary Subsystem
(MCU)
Read Cache Read Cache
NVS
NVS







a



b

Secondary Subsystem
(RCU)
Figure A-10 Failure Conditions (described in Table A-13)