RE: [squid-users] Hardware spec -- opinions?

Probably overkill but if you have the cash then great.

We use raid 0 on our main cache here at Swansea Uni. It has been pointed
out to me by JANET, who run several 5 clusters of Linux servers to form the
National Cache, that RAID anything is not really necessary as squid does
round robin on cache_dir anyway.

We serve only 450 machines but most of these are Open Access student
machines, which means that 95% of the time they are making cache requests.
We get about .9 - 1.2 million requests/day here is an average day's stats:

Requests Satisfied by the cache: 460,248
Requests Proxied 456,233
Total number of requests served: 916,481 ***
Bytes sent for cache requests: 1,805,775,925
Bytes sent for proxy requests: 3,872,823,782
Total number of bytes sent: 5,678,599,707 ***

Cache Hit Rate
Requests: 50.22%
Bytes: 31.80%
Number of Mb sent by this server: 5415.53
Number of hosts using this server: 427
Average number of requests/day: 916,481
Average number of requests/hour: 38186.71
Average number of requests/minute: 636.45

We run a Dual P3 450, 36Gb Raid 0, 512Mb RAM, Linux. And other than a
temporarily unreliable disk we have no problems.

Were happy with Linux, but there is talk of getting an Ultra 10 to do the
job.

Hope this is some use.

Jezz.

****************************************
Jezz Palmer.
Internet Systems Officer.
Library and Information Services
University of Wales, Swansea
Singleton Park
Swansea
SA2 8PP
Tel 01792 513260
****************************************

 -----Original Message-----
From: Chemolli Francesco (USI) [mailto:ChemolliF@GruppoCredit.it]
Sent: 08 June 2001 16:03
To: 'Vosburgh, Brian P, CTR, WHS/REF'; Squid-Users
Subject: RE: [squid-users] Hardware spec -- opinions?

> Looking at upgrading things for our Squid servers. What's the groups
> opinion on the DELL PE 1550 2U server? I'm looking at 1GB
> RAM, dual 15k RPM
> 18.2GB drives with hdw RAID-0 via the PERC3 controller with
> 128MB cache, and
> dual 1Ghz PIII's. I'm currently running Linux 2.2.19 but considering
> putting BSD on the new servers, I'm not happy with the memory
> mgmt of the
> Linux and our BSD boxes run much cleaner.

I'm not sure about the raid0 thing, but it is up to snuff.
(I am serving 2600 users on a dual P3/450 1Gb RAM Linux).

> We'll be buying two units to support about 2000 users. I'd
> appreciate any
> opinons/info.

I think you'll have no problems.
The second processor is a tad wasted though.

-- 
	/kinkie