[Beowulf] storage server hardware considerations

[Eugen Leitl]

On Thu, Sep 17, 2009 at 07:13:54PM -0500, Rahul Nabar wrote:

> Eugen, your setup seems very close to what I might go for. The cost
> seems attractive too. Do you know what kind of IOPS and MB/sec you are
> getting on this setup?

I've posted the bonnie++ data the other day (14x RE4 as RAID 10,
2x RE4 as RAID 1 root). I've used two LSI SAS3081E-R. No idea
about IOPS, which benchmark should I run?

An interesting variation on this is to use a 24-drive chassis
(with 2x3.5" internally, populated with 4x Intel SSD for ZIL
and L2ARC), use 3x LSI SAS3081E-R and to use Opensolaris with 
zfs on top of that. There's a thread on zfs-discuss@ ongoing right now:
http://mail.opensolaris.org/pipermail/zfs-discuss/2009-September/thread.html

Some relevant links:

http://blogs.sun.com/relling/tags/mttdl
http://blogs.sun.com/relling/entry/a_story_of_two_mttdl
http://blogs.sun.com/brendan/entry/test
http://blogs.sun.com/ahl/entry/expand_o_matic_raid_z

-- 
Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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