HP XP Continuous Access Software User Manual

Page 200

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Table 56 Resolving XP Continuous Access Journal pair suspension

Recovery procedure

SIM

Causes of suspension

Classification

According to SIM, remove
the hardware blockade or
failure.

Restore the failed volume
pairs (Pairresync).

DIf a failure occurs during
execution of the CCI
horctakeover command,
secondary volumes in SSWS
pair status may remain in the
master journal group. If
these volumes remain,
execute the pairresync
-swaps command on the
secondary volumes whose
pair status is SSWS
(pairresync is the CCI
command for
resynchronizing pair and
-swaps is a swap option).
This operation changes all
volumes in the master journal
group to primary volumes.
After this operation, restore
the volume pairs
(Pairresync).

DC0x

DC1x

DC2x

Hardware redundancy was
lost due to some blockade
condition. As a result, one
of the following could not
complete: primary-secondary
array communications,
journal creation, copy
operation, restore operation,
staging process, or
de-staging process.

Journals cannot be retained
because some portion of
cache memory or shared
memory was blocked due to
hardware failure.

Primary array failed to
create and transfer journals
due to unrecoverable
hardware failure.

Secondary array failed to
receive and restore journals
due to unrecoverable
hardware failure.

Drive parity group was in
correction-access status
while the XP Continuous
Access Journal was in COPY
status.

Primary array hardware or
secondary array hardware

Remove the failure from the
primary and secondary
arrays or network relay
devices.

If necessary, increase
resources as needed (for
example, amount of cache,
number of paths between
primary and secondary
arrays, and parity groups for
journal volumes).

Restore the failed pairs
(Pairresync).

DC0x

DC1x

Communication between
arrays failed because the
secondary array or network
relay devices were not
running.

Journal volumes remained
full even after the timeout
period elapsed.

Communication between the
primary and secondary
arrays

Delete failed pairs
(pairsplit-S).

If necessary, increase
resources as needed (for
example, amount of cache,
number of paths between
primary and secondary
arrays, and parity groups for
journal volumes).
Re-establish failed pairs
(Pairresync).

DC2x

Unrecoverable RIO (remote
I/O) timeout occurred
because the array or
networks relay devices were
overloaded.

RIO could not be finished
due to a failure in the array.

RIO overload or RIO failure

None. Primary array
automatically removes the
suspension condition when
the array is powered on.

DC8x

XP Continuous Access
Journal pairs were
temporarily suspended due
to a planned power outage
to the primary array.

Planned power outage to the
primary array

200 Troubleshooting

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