HP XP P9500 Storage - Manual (Page 108)

Troubleshooting hardware problems affecting pairs
Hardware failures affecting Continuous Access Journal are described in the following table. Note
also that, in addition to the problems described below, hardware failures that affect cache memory
and shared memory can cause the pairs to be suspended.
Recovery procedure SIM Causes of suspension Classification
Depending on the SIM, remove the hardware
blockade or failure. DC0x
DC1x
DC2x Hardware redundancy has been lost due
to some blockade condition. As a result,
one of the following could not complete: Primary or secondary
system hardware
Restore the failed volume pairs (pairresync) .
primary-secondary system communication,
If a failure occurs during execution of the RAID
Manager horctakeover command, secondary
journal creation, copy operation, restore
operation, staging process, or de-staging
process.
volumes in SSWS pair status may remain in
the master journal . If these volumes remain,
Journals cannot be retained because some
portion of the cache memory or the
execute the pairresync -swaps command on
the secondary volumes whose pair status is
shared memory has been blocked due to
hardware failure.
SSWS (pairresync is the RAID Manager
command for resynchronizing pair and -swaps
The primary system failed to create and
transfer journals due to unrecoverable
hardware failure. is a swap option) .This operation changes all
volumes in the master journal to primary
volumes. After this operation, restore the
volume pairs (pairresync).
The secondary system failed to receive
and restore journals due to unrecoverable
hardware failure.
The drive parity group was in
correction-access status while the Cnt
Ac-Jpair was in COPY status.
Remove the failure from the primary and
secondary systems or the network relay
devices. DC0x
DC1x
Communication between the systems
failed because the secondary system or
network relay devices were not running. Communication between
the primary and
secondary systems
If necessary, increase resources as needed (for
example, the amount of cache, the number of Journal volumes remained full even after
the timeout period elapsed.
paths between primary and secondary systems,
the parity groups for journal volumes, etc.).
Restore the failed pairs (pairresync).
Release failed pairs (pairsplit-S) . DC2x An unrecoverable RIO (remote I/O)
timeout occurred because the system or RIO overload or RIO
failure
If necessary, increase resources as needed (for
example, the amount of cache, the number of
network relay devices were overloaded.
Or, RIO could not be finished due to a
failure in the system.
paths between primary and secondary system,
the parity groups for journal volumes, etc.).
Re-establish failed pairs (paircreate).
No recovery procedure is required. The
primary system automatically removes the DC8x The Cnt Ac-J pairs were temporarily
suspended due to a planned power
outage to the primary system. Planned power outage
to the primary system
suspension condition when the system is
powered on.
Troubleshooting with RAID Manager
When an error has occurred in Continuous Access Journal pair operation when using RAID
Manager, you can identify the cause of the error by referring to the RAID Manager operation log
file. The file is stored in the following directory by default:
/HORCM/log*/curlog/horcmlog_HOST/horcm.log
Where:
* is the instance number.
HOST is the host name.
108 Troubleshooting