From: Thomas Fjellstrom <tfjellstrom@shaw.ca>
To: Matt Garman <matthew.garman@gmail.com>
Cc: linux-raid <linux-raid@vger.kernel.org>
Subject: Re: OT: sas controllers/expanders and "desktop" drives?
Date: Fri, 2 Apr 2010 23:37:14 -0600 [thread overview]
Message-ID: <201004022337.14896.tfjellstrom@shaw.ca> (raw)
In-Reply-To: <20100317143602.GA18298@septictank.raw-sewage.fake>
On March 17, 2010, Matt Garman wrote:
> Hello,
>
> For building a Linux md system with many disks, I've been looking at
> the LSI SAS 3081E-R controller card[1] with the SuperMicro
> 846TQ-R900B chassis[2]. The SAS3018E card looks like it has a
> mature open-source Linux driver. The chassis has a SAS expander;
> I'm not sure which one (but I have a question in to SuperMicro).
>
> Anyway, my question is this: has anyone used this setup, or one
> like it (sas controller + sas expander) with "desktop" class drives?
> The web research I've done suggests that most SAS controllers and
> expanders are targeted at the enterprise market, and therefore,
> aren't guaranteed to work with the (significantly cheaper) desktop
> drives.
>
> For example, from the FAQ for that SuperMicro chassis[3]:
>
> Question: We want to use the new Seagate 1.5TB ST31500341AS
> drives in combination with a storage solution based on your
> 846TQ chassis, is this compatible?
>
> Answer: This ST31500341AS hard drive is designed to be a Desktop
> type hard drive, not an Enterprise hard drive which is needed in
> this setup. We don't recommend this combination, so please use
> the Seagate 1TB ST31000340NS drive instead. This drive is an
> Enterprise drive and validated for our 846TQ chassis.
>
> In short, we want to build a server with 24 drives. The desktop
> drives are significantly cheaper than the enterprise drives. But
> getting 24 ports is cheapest with these SAS controllers + expanders.
If it helps at all, I'm using an 8 port SAS card to run my 5 disk md RAID 5
array with plain old 1TB Seagate Baracuda's. Works fine. Its been running
for a good 6 months now. I can't say how well it'll work in the future, but
it works well enough for now.
> Thanks,
> Matt
>
>
> [1]
> http://www.lsi.com/storage_home/products_home/host_bus_adapters/sas_hbas
> /lsisas3081er/index.html
>
> [2] http://www.supermicro.com/products/chassis/4U/846/SC846TQ-R900.cfm
>
> [3] http://www.supermicro.com/support/faqs/faq.cfm?faq=8230
>
> --
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--
Thomas Fjellstrom
tfjellstrom@shaw.ca
prev parent reply other threads:[~2010-04-03 5:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-17 14:36 OT: sas controllers/expanders and "desktop" drives? Matt Garman
2010-03-20 15:34 ` Bill Davidsen
2010-03-20 16:47 ` Matt Garman
2010-03-20 17:34 ` Bill Davidsen
2010-03-20 19:24 ` Richard Scobie
2010-03-21 0:42 ` Simon Matthews
2010-04-03 5:37 ` Thomas Fjellstrom [this message]
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