[THIN] Re: Citrix - Harddisk Specification

That's a good point. I personally like to Mirror the OS disk for the highest
availability, put a small page file on it and use the fastest configuration
available for the remaining drives to host a large pagefile and any data
that gets written to the server...

Steve Greenberg
Thin Client Computing
34522 N. Scottsdale Rd D8453
Scottsdale, AZ 85266
(602) 432-8649
www.thinclient.net
steveg@thinclient.net

-----Original Message-----
From: thin-bounce@freelists.org [mailto:thin-bounce@freelists.org] On Behalf
Of Matt Kosht
Sent: Friday, December 19, 2008 8:59 AM
To: thin@freelists.org
Subject: [THIN] Re: Citrix - Harddisk Specification

On Fri, Dec 19, 2008 at 5:08 AM, Toby <toby.percival@gmail.com> wrote:
> Hi List,
>
> Would there be a noticeable performance increase if we purchased 4 x 72gb
> SAS 15k disks, RAID 1 for the OS, with a page file on each of the other
two
> disks, or 3 x 146gb SAS 10k disk, RAID 1 for the OS, and a single disk for
a
> single page file?
>
> Two questions really;
> Would you recommend 72gb 15 k or 146gb 10k?
> Two page files per Citrix server with two physical disks or 1 page file
with
> one physical disk?
>
> Many thanks,
> Toby
>
>

My 2 cents...
If you size your farm to allow for the loss of 1 or more Citrix
servers this isn't a big deal.
I recommend not using RAID of any kind on Citrix servers period. I
personally use 1 disk for apps/OS 1 and 1 for the paging file. Paging
is a major source of disk contention on terminal servers. Terminal
servers page a LOT (at least the 32 bit ones do). This is a
significant performance boost not to have spindle contention on
something you know you will be read/writing too constantly. If you
have more than 2 disks you can experiment with putting OS on 1, Apps
on 1, profiles on 1(hard to do clean though), paging on 1, etc. It
would likely be even faster than my setup.
It's not a big deal these days to lose a disk on a server that's
practically identical to other servers in a load balanced farm. The
users just get reconnected to another server.
I can get a replacement hard disk in less than 4 hours. If it's just
the paging file disk you can create a new one on the other disk in
just a few minutes.
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