[Beowulf] petabyte for $117k

Eugen Leitl eugen at leitl.org
Wed Sep 2 01:23:46 PDT 2009

On Tue, Sep 01, 2009 at 04:28:10PM -0700, Bill Broadley wrote:

> I'm very curious to hear how they are in production.  I've had vibration of

My thoughts exactly.

> large sets of drives basically render the consumer drives useless.  Timeouts,
> highly variable performance, drives constantly dropping out of raids.  It
> became especially fun when the heavy I/O of a rebuild knocks additional drives
> out of the array.

Also my experience down to a T.
> I'd also worry that running the consumer drives well out of spec (both in duty
> cycle and vibration) might significantly shorten their lives.
> Are the 7200.11 1.5TB seagate's particularly vibration resistant?

No. They're awful, as the entire 7200.11 line (I've had failures
in 750 GByte, 1 TByte, 1.5 TByte, everywhere, even with reasonably
small drive populations). 
> Maybe those $0.23 nylon standoffs work better than I'd expect.

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