How do I migrate data on drives that are cluster resouces

[Steve]

I have 3 SAN attached LUNS Disk X: Disk U: and Disk W: that are used by
clustered servers. What is the proper procedure to migrate the data on these
disks to new larger disks keeping the same drive letters and cluster
resources for these disks?

Are there any Microsoft step by step procedures?

This is a two server (Windows 2003 Servers) cluster.

This is critical data so I want to be sure we use the right procedures to do
this so when we are done the application sees everything as before the
migration except the data is running on the new larger disks.

[Edwin vMierlo [MVP]]

Have you talked to your storage vendor ?
the probably have established and proven procedures/software to do this
easily

"Steve" <St...@discussions.microsoft.com> wrote in message
news:00686110-D5D0-43EC...@microsoft.com...

[Tim Walsh]

In our case we'd just grown the disk on the SAN and then use diskpart to
extend it on the server. No data loss and we don't have to copy the data
from one disk to another. I'd talk to my SAN provider and find out if that's
a possibility in your case. Depending on the SAN we'd either add bigger
drives or grow the virtual disks.

DiskPart is built into windows 2003, and other then not being able to extend
the boot disk, or a partitioned section of a disk that doesn't have
contiguous free space it works well for us. (There are other tools available
if you need to extend the boot disk for some reason).

"Steve" <St...@discussions.microsoft.com> wrote in message
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[Steve]

I have the new storage all setup and I have procedures for copying the data.
My question pertains more to the clustering side of things. I am looking for
a step by step to tell me when or if I need to stop the cluster, do I need to
delete the cluster resource for the disks then recreate them after the data
is moved to the new disks and I have assigned the old drive letters to the
new disks? These are the steps I am looking for.

My original question was pretty vague and I apologize. I am looking for the
procedures pertaining to the cluster and cluster resources for the disks.
Clustering is not my strong (as you can tell).

[Edwin vMierlo [MVP]]

Steve,

have a look at this blog (thanks Russ !!)
it is about moving a cluster to a new SAN, but largely applicable of what
you are trying to do:
http://msmvps.com/blogs/clusterhelp/archive/2005/08/05/moving-a-cluster-to-a-new-san-original-posted-jul-22-2005.aspx

let us know if you have more questions
rgds,
Edwin.

"Steve" <St...@discussions.microsoft.com> wrote in message

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[Mark]

As Tim said we have grown LUNs on the SAN side and then just extended the LUN
with Diskpart, no outage or downtime or data loss, literally take seconds to
extend the LUN on the Windows side. If your SAN cannot accomadate growing
the existing LUNs maybe your SAN group can use BCV's to give you new bigger
LUNs. BCV's, Business Conitunuous Volume, on EMC storage, this is where the
SAN group creates a new larger LUN on the SAN and syncs the data to the new
LUN and points the server to the new LUN, again, no outage. we have never
done this on the cluster nodes but have done it many times on stand alone
Windows servers.
--
Mark

[Steve]

I appreciate the suggestions on growing the luns but that is not an option
for us. We have to move the data to new physical luns.

I need to know what needs to be done on the cluster to get ready to move the
data to the new luns. Do I need to completely shut down the cluster services?
I am keeping the same drive letters on the new storage so do I have to delete
the existing physical drive resources from the cluster group and then
recreate the resources when the data is moved and the new drives have the
correct drive letters?