LaCie 131018 - StorView Snapshot - Mac, User Manual

Page: 199 / 214

Troubleshooting
191
After switching drives
and/or controllers from
one storage solution
enclosure to another,
one of the solutions
reports that the storage
solution is being
monitored by another
host. Multiple Configuration WWNs being
used. If you have been interchanging
configured drives or controllers
between storage solutions you may
have a situation where multiple
solutions are now sharing the same
Configuration WWN. This can be
corrected by changing the
Configuration WWN value found in the
Controller Parameters on either of the
storage solutions. After making this
change, all participating host systems
will require a reboot,
see 8.2 ”Controller
Environmentals” beginning on page 81.
Inadvertently pulled the
incorrect drive from the
enclosure and the
array is dead. Possible incorrect drive identification
and removal. If by mistake you remove a working
drive member instead of the failed
drive, this can cause the array to fail.
In most cases you can simply re-insert
that drive that was incorrectly
removed and the array will return to
the same state it was in prior to
removing the drive.
For RAID 5/50/6 arrays , a drive failure
will put the array in a critical state, if a
hot spare was available the array
should go into a rebuild mode. If you
inadvertently remove one of the
known good drives that is in the
process of rebuilding, the rebuild
operation will stop. Once you re-insert
the incorrectly removed drive the
array will return to the critical state and
the rebuild process will start again. If
you did not have a hot spare assigned,
the array will be in a critical state. If
you inadvertently remove a known
good drive instead of the failed drive
the array will change to a failed array
state. Re-inserting that inadvertently
removed drive will put the array back
into a critical state. Replacing the
failed drive will cause the array to
begin a rebuild operation provided
that you assign it as a hot spare or, if
the Auto Hot Spare option was
enabled the rebuild will begin
automatically as the new replacement
drive is installed.
Symptom Reason Solution