Single/Mulitple LUN for vmware vm hosting
- by Yucong Sun
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?