[THIN] Re: RAID 1
- From: "Andrew Wood" <andrew.wood@xxxxxxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Mon, 30 Apr 2007 13:44:59 +0100
I've always wanted to do this but never had the time - it'd be interesting
to note what the performance gain was in relation to the fact that you
increase your risk of causing an outage due to a single disk failure.
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf
Of Joe Shonk
Sent: 28 April 2007 15:38
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: RAID 1
It's a very interesting question indeed. Which blades are you using? What
kind of i/o controller?
Putting the pagefile (alone) on a second partition will help performance
with regards that the pagefile will be create as one large continuous(non
fragmented) file.
With some controllers (those with NO cache), you can see an increase in
performance by not using RAID 1 and have two independent spindles and put
the pagefile, temp dirs, and spooler on the second drive. But if you are
going to do that, then why not set it up a RAID 0 with a second partition
for the pagefile. We literally 2x the performance in reads and writes with
the configuration over RAID 1.
Joe
On 4/27/07, Charles Watts <gregwatts77@xxxxxxxxxxx> wrote:
We are using HP Blades with RIAD 1 for our Citrix Servers on Windows Server
2003 SP1. My question is would we get better disk i/o performance if we
partioned the RAID 1 into two partitions and stuck the page file, temp
directories and programs on the second partition? If not has any one used a
RAMDISK for this? Or is their an argument for eliminating RAID 1 altogether
and just put the page file, temp directories on the second hard drive
(better performance and more disk space). Since I have a boat load of blades
where is the risk? So I lose one or two drives a year on my servers and each
time 50 - 60 users get kicked off. heck! I do that accidently at least once
a year!? Managment might not buy that argument but If the performance gain
is significant then it's worth it. Your thoughts?
Thanks,
Greg
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