Explanation
A disk I/O medium error has occurred.
Action
- Check whether the VDisk the error is reported against is mirrored. If it is,
check if there is a "1870 Mirrored VDisk offline because a hardware read
error has occurred" error relating to this VDisk in the error log. Also
check if one of the mirror copies is synchronizing. If all these tests are
true then you must delete the VDisk Copy that is not synchronized from
the VDisk. Check that the VDisk is online before continuing with the
following actions. Wait until the medium error is corrected until trying to
recreate the VDisk 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 VDisk 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 VDisk 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 VDisk
content that is being used to a new VDisk. Depending on the
circumstances, this new VDisk can be kept and mirrored, or the original
VDisk 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%)