small-scale citrix pool (hard disk or SSD?)

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sparkies
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Joined: Fri Aug 12, 2011 4:56 pm
Location: Clitheroe, Lancashire, United Kingdom

small-scale citrix pool (hard disk or SSD?)

Post by sparkies »

Hi guys,

just wondering if someone could advise...

I'm running a small citrix xenserver pool with 4 servers and some 20 or so virtual machines. Currently I am using a TS253 with 2 1TB hard drives (RAID-1) and NFS4 for the virtual machines' disk storage. However, the disk storage is actually a bottleneck. The So I'm thinking of getting a new server using SSDs in a RAID configuration.

My question is now related to the particular access pattern for a virtual machine... The virtual machine disks are obviously simply huge files which get once allocated and then change, possibly many times on the same block, does a normal consumer SSD handle such a pattern correctly? Can a 2 disk solution with RAID-1 provide enough redundancy or would I best go for a RAID-6 4 disk solution?

Thanks,

Andres
TS-453Pro (4x2TB WD Gold) RAID5, TS-431 (4x2TB WD Red) RAID5, TS-453A (4x2TB WD Gold) RAID10, 3xTS-253A (2x2TB WD Gold) RAID 1, TS-112 2TB (WD Red), TS-110 1TB (WD Red)
5 x HP ProLiant Microservers running Xenserver with a number of virtual machines..., several Macs, several PCs...
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