Explanation
A disk I/O medium error has occurred.
User Response
- Check whether the volume the error is reported against is mirrored.
If it is, check if there is a "1870 Mirrored volume offline because
a hardware read error has occurred" error relating to this volume
in the event log. Also check if one of the mirror copies is synchronizing.
If all these tests are true then you must delete the volume copy that
is not synchronized from the volume. Check that the volume is online
before continuing with the following actions. Wait until the medium
error is corrected before trying to re-create the volume mirror.
- If the medium error was detected by a read from a host, ask the
customer to rewrite the incorrect data to the block logical block
address (LBA) that is reported in the host systems SCSI sense data.
If an individual block cannot be recovered it will be necessary to
restore the volume from backup. (If this error has occurred during
a migration, the host system does not notice the error until the target
device is accessed.)
- If the medium error was detected during a mirrored volume synchronization,
the block might not be being used for host data. The medium error
must still be corrected before the mirror can be established. It may
be possible to fix the block that is in error using the disk controller
or host tools. Otherwise, it will be necessary to use the host tools
to copy the volume content that is being used to a new volume. Depending
on the circumstances, this new volume can be kept and mirrored, or
the original volume can be repaired and the data copied back again.
- Check managed disk status. If all managed disks show a status
of "online", mark the error that you have just repaired as "fixed".
If any managed disks do not show a status of "online", go to
start MAP. If you return to this step, contact your support center
to resolve the problem with the disk controller.
- Go to repair verification MAP.
Possible Cause-FRUs or other:
Other:
Enclosure/controller fault (100%)