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UNIX Admin asking for Swap LUN

 
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Old 08-11-2008
UNIX Admin asking for Swap LUN
Hello UNIX Experts.
I am responsible for our company's LAN and Clariion SAN environments. My primary responsibilities have always been on the Windows server side for disk on the SAN. I no nothing about UNIX. I think it might be a rock group.? Smilie
I am now being asked to provide a new disk/LUN on our Clariion, which houses all UNIX host data as well. The disk is going to provide adequate sizing for what I am told is the UNIX "swap space". I have no idea what this "swap space" acts like or does, and I would appreciate an explanation so that I can create an appropriate LUN.
On the Clariion, my options include choosing a separate bus, enclosure and physical disk drives which I might do anyway, but should I choose RAID 1 or RAID5?
In addition, what about providing this "swap space" LUN on a completely separate fiber channel adapter in the UNIX host? Will that accomplish anything? The bottom line is, I don't want to make things worse. I want to know what I am doing and why, and provide the best configuration possible to the UNIX admin.

Kurt
 
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LEARN ABOUT CENTOS

mkqdisk

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)