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Message-ID: <589238.63246.qm@web26005.mail.ukl.yahoo.com>
Date: Thu, 3 Feb 2011 09:54:31 +0000 (GMT)
From: Glyn Astill <glynastill@yahoo.co.uk>
Subject: Re: Which RAID Controllers to pick/avoid?
To: Dan Birken <birken@gmail.com>, Greg Smith <greg@2ndquadrant.com>
Cc: pgsql-performance <pgsql-performance@postgresql.org>
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--- On Thu, 3/2/11, Greg Smith <greg@2ndquadrant.com> wrote:=0A> The 5405 a=
nd 5805 models do have a known problem where they overheat if=0A> you don't=
 have enough cooling in the server box, with the 5805 seeming=0A> to be the=
 bigger source of such issues.=A0 See the reviews at=0A> http://www.newegg.=
com/Product/Product.aspx?Item=3DN82E16816103099 for=0A> example.=A0 Scott M=
arlowe was griping recently about a similar issue in=0A> some of the LSI mo=
dels, too.=A0 I suspect it's a problem impacting=0A> several of the larger =
RAID cards that use the big Intel IOP processors=0A> for their RAID computa=
tions, given that's the part with the heatsink on=0A> it.=0A=0A> Quick summ=
ary:=A0 avoid the Adaptec 3405 and 4800.=A0 Rest are decent=0A> cards.=A0 J=
ust make sure you monitor the temperatures in your case (and=0A> the card t=
oo if arcconf lets you, I haven't checked for that yet) if=0A> you end up w=
ith a 5405/5805.=0A=0A=0AI can attest to the 5805 and 5805Z cards running a=
 little hot, the ones we're running tend to run in the high 60s and low 70s=
 Celsius with fairly good airflow over them.=0A=0AI've been running some 58=
05s for 3 years now, and 5805Zs for a year and they've been really good, st=
able, fast cards.  I monitor everything on them (including temperature) wit=
h nagios and a simple script that uses the arcconf utility.=0A=0AGlyn=0A=0A=
=0A=0A