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Recommended configuration for DELL MD3000 + MD1000 in 2 node file server cluster

Posted on 2008-06-18
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What is your recommendation for configuring the following:
DELL MD3000 with 15 x 1TB SATA drives
DELL MD1000 with 15 x 1TB SATA drives
2 x DELL 2950, each connected to MD3000 using SAS
Windows Server 2003 R2 x64 in two node clustered file server configuration
Veritas Storage Foundation

The goal is to run a high availability file share using the two node cluster server.

The MD3000 does not support volumes larger than 2TB.
Cluster server does not support dynamic disks.
Storage Foundation is used to provide a large volume that does support cluster services.

How would you recommend we configure the drives?
E.g.
3 drives in each RAID5 configuration.
2 hot spares per each MD3000 and MD1000.
Create large volume using storage foundation by adding the 2TB RAID4 volumes.
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Question by:ptr727
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by:r_panos
r_panos earned 1000 total points
ID: 21847917
Well there's no good or bad solution, everything depends of the use you have in mind. Said so here are a few considerations:

If this cluster will be dedicated to File sharing purposes then create more RAID 5 volumes with 3 HDDs, create 2 or more spare drives (more RAID 5 you have, more spare drives should use, just in case).
You can use multiple volumes in cluster in one or more cluster groups, creating a more rational division of file shares (not to mention the different quotas you can implement for each volume).

I'm not very fond of the usage of further software in order to create, manage etc etc bigger volumes. I keep it "simply" and make it function.
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by:ptr727
ID: 21851766
Thanks.

How about the drive provisioning?
E.g.
3 spare and 4 sets of 3 drives in each raid5 array to give per 2tb lun
2 spare and 13 drives in 1 raid5 array then create multiple 2tb luns on that array.

What are hte pros and cons of 3 or many drives in an array, what is the recommended max number of drives in a raid5 array?
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Accepted Solution

by:
ptr727 earned 0 total points
ID: 21902772
We ended up configuring each can with 2 sets of 7 drive RAID5 plus a hot spare.
This gives us a reasonable balance between redundancy and drive utilization.
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