<div class="gmail_quote">On Tue, Apr 13, 2010 at 1:14 PM, Ryan Manikowski <span dir="ltr"><<a href="mailto:ryan@devision.us">ryan@devision.us</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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On 4/13/2010 1:05 PM, Boris Epstein wrote:
<blockquote type="cite">
<pre>Hello listmates,
I would like to build a 12-15 TB RAID 5 data server to run under
ContOS. Any recommendations as far as hardware, configuration, etc?
Thanks.
Boris.
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</blockquote>
<br></div></div>
Chassis - CSE-836A-R1200B Supermicro SC836 A-R1200B - Rack-mountable -
3U - SATA/SAS - hot-swap - power supply 1200 Watt<br>
<br>
RAID Card - 3ware <span>9650SE-16ML-<span style="color: black;">SGL </span></span><span style="color: black;">9650SE-16ML-SGL
RAID 0/1/5/6/10/50 16CH SATA II PCIE 256MB ECC DDR2 - PCI Express x8 -
Up to 300MBps - 4 x SATA x4 Serial ATA/300 - Serial ATA<br>
<br>
BBU Module for RAID card - 3ware BBU-MODULE-03<br>
<br>
<br>
Pick the cpu(s) and motherboard to fit the chassis. Obviously go with
ECC ram and ONLY enterprise grade hard drives. To ensure compatibility
check with 3ware to see which drives they recommend. Areca RAID cards
will get you a little better performance but the module for the 9650SE
series of 3ware cards is included with the Centos kernel. Getting the
Areca driver going is a bit more work, but nothing that would be
considered a huge hurdle for a competent sysadmin. Also, if you're
looking for advice on Areca products call their Tekram contact in the
USA. Their other distributors have been less than stellar on answering
pre-sales questions.<br>
<br>
</span><br>
<pre cols="72">--
Ryan Manikowski
]] Devision Media Services LLC [[
<a href="http://www.devision.us" target="_blank">www.devision.us</a>
<a href="mailto:ryan@devision.us" target="_blank">ryan@devision.us</a> | 716.771.2282</pre>
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<br></blockquote></div><br>Ryan's hardware recommendations are good. But I wouldn't run a RAID5 volume that large, software or hardware. It's just too risky as rebuilds will
take days and the chances of hitting a non recoverable read error would
be near 100% on a volume that size.<br>
<br>
Either run multiple smaller RAID5's and use LVM to manage the volumes
which the OS will use or choose a better RAID layout. RAID6 or RAID10
are much better choices these days.<br>
--<br>
David