HP XP P9000 Continuous Access Synchronous for Mainframe Systems User Guide

If the host supports GDPS and the FREEZE option is enabled, the IEA494I system console message
with extended long busy (which was generated in response to the SCI) triggers the CGROUP
(FREEZE/RUN) command.
XP P9500 response characteristics to failure conditions
XP P9500 supports CGROUP in the GDPS environment by performing PPRC compatible actions and
returning PPRC compatible messages according to failure conditions.
In Remote Web Console’s CU Option dialog box, PPRC support by host =, must be enabled (Yes).
If it is disabled (No), the host processor generates a system console message that includes the SIM
instead of the IEA494I or IEA491E message.
The following figure shows failure conditions, with corresponding XP P9500 response characteristics
in the table following the figure.
FREEZE functionExpected messagesPairs suspended?Failure condition
Not activated
1
No IEA480E, IEA491E, or IEA494I messages
display.
No1. Failure of all channel interfaces
on the MCU
Not activated
1
(1) IEA480E message (SIM for blocked physical disk
or disk’s port) displays when the next I/O is issued
to any volume in the parity group.
NoFailure of one
physical disk in
a parity group
2. Failure of a
disk on the
MCU
(2) No IEA491E or IEA494I messages display.
Not activated
2
(1) IEA480E message (SIM for blocked LDEV)
displays when the next I/O is issued to any volume
in the parity group.
NoFailure of two
physical disks in
a parity group
(2) No IEA491E or IEA494I messages display.
Not activated(1) IEA480E message (SIM for blocked Cnt Ac-S Z
path) is reported when the next I/O to any device
in this MCU is issued.
No3. Failure of a link between the
MCU and RCU
(2) No IEA491E or IEA494I messages display.
Not activated(1) IEA480E (SIM for cache blocked) is reported
when the next I/O to any device in this MCU is
issued.
No
3
One side of
MCU cache
blocked due to
failure
4. Failure of
NVS on the
MCU; failure
of MCU read
cache
(2) No IEA491E or IEA494I messages display.
Not activatedNo IEA480E, IEA491E, or IEA494I messages
display.
No
3
One side of
MCU cache
blocked due to
maintenance
IEA494I and IEA491E console messages 121