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October 24th, 2014 12:00
Removing SQL cluster old EMC SAN disks after migration to a new SAN
What is the procedure to gracefully remove 70+ EMC disks no longer used and offline ? We successfully migrated to ISCSI SAN but still have HBAs and the old EMC disks and would like to gracefully remove the disks and retire EMC.
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dynamox
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October 24th, 2014 14:00
are you saying Clariion LUNs are still presented to the host ? If not, uninstall PowerPath (if used), shutdown the host and remove HBAs.
emilkova
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October 24th, 2014 16:00
The disks are offline but still active on all six cluster nodes . I can probably uninstall PowerPath one node at a time but dont know how to simultaneously do that on all cluster nodes.
dynamox
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October 24th, 2014 20:00
how disks can be offline but still active ?
dynamox
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October 27th, 2014 13:00
assuming you have no other storage presented to this host from this Clariion, simply remove host initiator from the storage group. If you are using PowerPath you will need to do some clean up (powermt check and then select y to remove all dead devices).
emilkova
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October 27th, 2014 13:00
the disks as clustered resources are offline but can be brought online. they are still part of a clustered group and when I have a solid procedure how to unpresent/delete from the EMC I am going first to remove them from the cluster group and available storage.