[Xen-users] RAID10 Array

[Jonathan Tripathy <jonnyt@xxxxxxxxxxx>]

Hi Everyone,

I have 3 RAID ideas, and I'd appreciate some advice on which would be 
better for lots of VMs for customers.
My storage server will be able to hold 16 disks. I am going to export 1 
iSCSI LUN to each xen node. 6 nodes will connect to one storage server, 
so that's 6 LUNs per server of equal size. The server will connect to a 
switch using quad port bonded NICs (802.3ad), and each Xen node will 
connect to the switch using Dual port bonded NICs.
Idea 1:
3 X RAID10 Arrays (4 disks per array)
4 Hot Spares
2 LUNs per array

Idea 2:
1 X RAID10 Array (12 disks per array)
4 Hot Spares
6 LUNs per array

Idea 3:
1 X RAID 10 Array (14 disks per array)
2 Hot Spares
6 LUNs per array

I'd appreciate any thoughts or ideas on which would be best for 
throughput/IPOS
Thanks

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