From: Brad Campbell <brad@wasp.net.au>
To: Frank van Maarseveen <frankvm@xs4all.nl>
Cc: linux-raid@vger.kernel.org
Subject: Re: Hard drive Reliability?
Date: Mon, 24 May 2004 22:35:10 +0400 [thread overview]
Message-ID: <40B2405E.8040801@wasp.net.au> (raw)
In-Reply-To: <20040524132525.GA14721@janus>
Frank van Maarseveen wrote:
> On Sat, May 22, 2004 at 09:15:13AM +0400, Brad Campbell wrote:
>
>>For those looking for great SATA hotswap bays with good cooling, I have 2
>>of these. Besides being a bit on the noisy side, they keep the drives very
>>cool and the added airflow inside the case keeps everything else cool too!
>>
>>http://www.supermicro.com/products/accessories/mobilerack/CSE-M35T-1.cfm
>
>
> I hope you didn't put a complete raid set in one of these because they
> have only one fan. Guess what happens when that moving part dies...
Yep, I have 2 units with 10 drives combined into a single Raid-5.
When that moving part dies the drives heat up a bit more. There are 4 case evacuation fans at the
back of this box that provide just enough backup airflow to stop the drives reaching destruction
temperatures.
I have had a good look at the failure modes of 92mm double ball bearing fans and I have not found
much record of them failing catastrophically. They slow down due to dust or bearing failure over
time before they grind to a halt usually.
These boxes measure fan RPM and drive temperature and if either of them get a little out of hand
they sound a dirty great warning piezo that is hard to miss.
I'm not worried. I'm more concerened about psu/cpu fan failure than these fans failing.
Give me one decent 92mm double ball raced fan against multiple 40mm crappy sleeve fans you get in
normal hotswap bays any day of the week!
Brad
next prev parent reply other threads:[~2004-05-24 18:35 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-19 19:58 Hard drive Reliability? John Lange
2004-05-19 20:49 ` Måns Rullgård
2004-05-19 21:28 ` Sevatio
2004-05-19 22:02 ` John Lange
2004-05-19 22:42 ` jim
2004-05-19 22:26 ` Guy
2004-05-19 23:53 ` maarten van den Berg
2004-05-20 0:49 ` TJ Harrell
2004-05-20 1:13 ` berk walker
2004-05-20 6:39 ` Måns Rullgård
2004-05-19 23:44 ` maarten van den Berg
2004-05-19 22:04 ` berk walker
2004-05-19 22:18 ` Guy
2004-05-19 23:40 ` maarten van den Berg
2004-05-20 0:34 ` Guy
2004-05-20 1:46 ` John Lange
2004-05-20 22:27 ` Russ Price
2004-05-20 15:51 ` Sevatio
2004-05-20 4:39 ` Mark Hahn
2004-05-20 7:15 ` John Lange
2004-05-20 12:15 ` Mark Hahn
2004-05-20 13:26 ` jim
2004-05-20 13:31 ` John Lange
2004-05-20 14:20 ` Mark Hahn
2004-05-20 13:32 ` Tim Grant
2004-05-20 14:38 ` Robin Bowes
2004-05-22 5:15 ` Brad Campbell
2004-05-24 13:25 ` Frank van Maarseveen
2004-05-24 18:35 ` Brad Campbell [this message]
2004-05-24 22:38 ` maarten van den Berg
-- strict thread matches above, loose matches on Subject: below --
2004-05-20 13:54 Cress, Andrew R
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