Re: Dell Hardware Recommendations - Mailing list pgsql-performance

I know we bough the 4 proc opteron unit with the sas jbod from dell and it
has been extremely excellent in terms of performance.

Was like 3 times faster the our old dell 4 proc which had xeon processors.

The newer one has had a few issues (I am running redhat as4 since dell
supports it. I have had one kernel failure (but it has been up for like a
year). Other then that no issues a reboot fixed whatever caused the failure
and I have not seen it happen again and its been a few months.

I am definitely going dell for any other server needs their pricing is so
competitive now and the machines I bought both the 1u 2 proc and the larger
4 proc have been very good.

Joel Fradkin



Wazagua, Inc.
2520 Trailmate Dr
Sarasota, Florida 34243
Tel.  941-753-7111 ext 305



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-----Original Message-----
From: pgsql-performance-owner@postgresql.org
[mailto:pgsql-performance-owner@postgresql.org] On Behalf Of Merlin Moncure
Sent: Friday, August 10, 2007 1:31 PM
To: Arjen van der Meijden
Cc: Joe Uhl; pgsql-performance@postgresql.org
Subject: Re: [PERFORM] Dell Hardware Recommendations

On 8/9/07, Arjen van der Meijden <acmmailing@tweakers.net> wrote:
> On 9-8-2007 23:50 Merlin Moncure wrote:
> > Where the extra controller especially pays off is if you have to
> > expand to a second tray.  It's easy to add trays but installing
> > controllers on a production server is scary.
>
> For connectivity-sake that's not a necessity. You can either connect
> (two?) extra MD1000's to your first MD1000 or you can use the second
> external SAS-port on your controller. Obviously it depends on the
> controller whether its good enough to just add the disks to it, rather
> than adding another controller for the second tray. Whether the perc5/e
> is good enough for that, I don't know, we've only equipped ours with a
> single MD1000 holding 15x 15k rpm drives, but in our benchmarks it
> scaled pretty well going from a few to all 14 disks (+1 hotspare).

As it happens I will have an opportunity to test the dual controller
theory.   In about a week we are picking up another md1000 and will
attach it in an active/active configuration with various
hardware/software RAID configurations, and run a battery of database
centric tests.  Results will follow.

By the way, the recent dell severs I have seen are well built in my
opinion...better and cheaper than comparable IBM servers.  I've also
tested the IBM exp3000, and the MD1000 is cheaper and comes standard
with a second ESM.  In my opinion, the Dell 1U 1950 is extremely well
organized in terms of layout and cooling...dual power supplies, dual
PCI-E (one low profile), plus a third custom slot for the optional
perc 5/i which drives the backplane.

merlin

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