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Full Discussion: Removing Faulty Disk SSA
Operating Systems AIX Removing Faulty Disk SSA Post 302233430 by bakunin on Sunday 7th of September 2008 05:42:04 PM
Old 09-07-2008
Quote:
Originally Posted by vuppala360
Is replacing this disk with an filler will break the loop and spoil the volumes.
If you worry because of the breaking of the loop: that is not a problem. The loop makes sure each disk can be reached via two ways: any point in a circle can be reached from any other point in the circle clockwise and counter-clockwise, yes?

That means: if you break the loop to replace the disk (regardless of the replacement being a filler or another disk) you can do so and the other disks will still be accessible. Only when another connection breaks at the same time some disks would become inaccessible. This risk is - for the purpose of replacing the disk - admissible/negligible.

I hope this helps.

bakunin
 

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mkqdisk(8)						      Quorum Disk Management							mkqdisk(8)

NAME
mkqdisk - Cluster Quorum Disk Utility WARNING
Use of this command can cause the cluster to malfunction. SYNOPSIS
mkqdisk [-?|-h] | [-L] | [-f label] [-c device -l label] [-d [-d ...]] DESCRIPTION
The mkqdisk command is used to create a new quorum disk or display existing quorum disks accessible from a given cluster node. OPTIONS
-c device -l label Initialize a new cluster quorum disk. This will destroy all data on the given device. If a cluster is currently using that device as a quorum disk, the entire cluster will malfunction. Do not run this on an active cluster when qdiskd is running. Only one device on the SAN should ever have the given label; using multiple different devices is currently not supported (it is expected a RAID array is used for quorum disk redundancy). The label can be any textual string up to 127 characters - and is therefore enough space to hold a UUID created with uuidgen(1). -f label Find the cluster quorum disk with the given label and display information about it. -L Display information on all accessible cluster quorum disks. -d Increase debugging level. Specify multiple times for more information. Currently, specifying more than twice has no effect. SEE ALSO
qdisk(5), qdiskd(8), uuidgen(1) July 2006 mkqdisk(8)
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