Re: Quorum drive and Data Drive on the Shared Array
- From: "John Fullbright [MVP]" <fjohn@donotspamnetappdotcom>
- Date: Fri, 9 Jun 2006 07:58:27 -0700
I think you nailed the problem here. If your storage allows you to present
seperate LUNs, then this will work. If you can only present one LUN, do not
put one logical disk in the cluster group and another logical disk in an
applications group. You would in effect create cross group dependencies and
break atomicity (the groups won't failover properly).
"Russ Kaufmann [MVP]" <russ@xxxxxxxxxxxxxxx> wrote in message
news:eRhgCvyiGHA.1936@xxxxxxxxxxxxxxxxxxxxxxx
"Abbie" <Abbie@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:54385CCE-1243-4598-B246-FEF4A4765955@xxxxxxxxxxxxxxxx
When building an active/passive sql2k cluster (win2k3), should you:
a)create a phyical mirror just for the quorum (lots of wasted space)
b)create a 1gb(or so) logical from physical mirror
It depends on the hardware. Some lower end SANs will not let you break
physical disks down inside the SAN into smaller LUNs. For example, if you
have two 146 GB drives, you can create a 1 GB LUN and a 145 GB LUN out of
the two disks (in a mirror in the SAN) which are then presented to the
cluster nodes as two basic disks of 1 GB and 145 GB. However, some lower
end SANs will not let you break the physical disks down. Then, you can
create only a 146 GB LUN and would have tons of wasted space.
--
Russ Kaufmann
MVP - Windows Server - Clustering
ClusterHelp.com, a Microsoft Certified Gold Partner
Web http://www.clusterhelp.com
Blog http://msmvps.com/clusterhelp
.
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- From: Russ Kaufmann [MVP]
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