Single/Mulitple LUN for vmware vm hosting

Posted by Yucong Sun on Server Fault See other posts from Server Fault or by Yucong Sun
Published on 2012-06-20T01:35:17Z Indexed on 2012/06/20 3:17 UTC
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iscsi

I'm building a iscsi storage system for hosting about ~500 Vmware vm running concurrently. And I have a disk array with 15 disks, I only need moderate write performance but preferably not SPOFed. so, that leaves me with RAID1 / RAID10 , I have couple choices:

1) 3x LUN 4disk RAID10 + 3 hot-swap 2) 1x LUN 14disk RAID10 + 1 hot-swap 3) 7x LUN 2disk RAID1 + 1 host-swap

Which way is better? Is there a real problem running 500 vms on single LUN? and would it be better to resort to 7 LUns so each VM is better isolated with each other?

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