HP XP P9000 Continuous Access Synchronous for Mainframe Systems User Guide

DescriptionParameter
RCU port number (0x00-0xff)cc
RCU CU number (0x00-0xfe)dd
When WWNN is specified, CESTPATH parameters are the following.
DescriptionParameter
MCU SAID (x’00 and port number)aabb
RCU SAID (x’00 and port number)ccdd
WWN is the unique number for the controller and is indicated as follows.
I/O control after failure—with CGROUP FREEZE/RUN
When a failure occurs in the P-VOL, you can stop host I/O and copy operations, and then restart
them when conditions improve using the TSO CGROUP command with the FREEZE and RUN options.
• CGROUP FREEZE:
Stops host I/O to specified P-VOLs
Presents state change pending (SCP) with extended long busy status to host I/O requests.
This causes the host to queue I/Os for the P-VOLs. SCP is indicated until the CGROUP/RUN
command is issued or until the SCP time expires.
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I/O control after failure—with CGROUP FREEZE/RUN 115