Re: [Xen-users] RAID10 Array

["jpp@xxxxxxxxxxxxxxxxxx" <jpp@xxxxxxxxxxxxxxxxxx>]

> 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

Hello,

It seems to be the best solution for the global IO throughput, I used
to have an Equalogic San with such an architecture, but with a Lun (or
two) for every VM.


regards




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