[Beowulf] Consumer vs. Enterprise Hard Drives in Clusters
landman at scalableinformatics.com
Wed Jan 21 20:00:42 EST 2009
Greg Lindahl wrote:
> On Wed, Jan 21, 2009 at 04:19:55PM -0800, Jon Forrest wrote:
>> last time I checked, the enterprise drives were ~25%
>> more expensive than the consumer drives. This difference
>> might have changed since then.
> Last time I checked, it was +$10 on a $300 drive. I bought
> the enterprise drives.
> My local system reseller claims there's a substantial difference in
> return rate. I'd love to have harder data.
We don't see that. Similar return rates on both. Higher margins
(generally) on the enterprise drives.
Firmware is generally the same, apart from TLER and other things. There
are lots of interesting (and spurious) claims running around as to what
is and isn't different.
As someone who puts out their fair share of drives (and deals with
returns on a daily/weekly basis), I can honestly say that we don't
really see much different in return rates for Enterprise vs Commodity
drives. I can say that the failure rates for both are *higher* than the
manufacturer suggested AFR. We are seeing occasional 'batch effects'
(more failures in some batches than others). As we whallop the heck out
of the drives *before* we ship we generally don't get too many DDDTS
(drive deaths due to shipping). These scale at about the AFR. We see
small amounts of field based infant mortality. Usually we see marginal
drives die in the first 3-6 months of usage, then systems are fairly
rock solid after that.
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: landman at scalableinformatics.com
web : http://www.scalableinformatics.com
phone: +1 734 786 8423 x121
fax : +1 866 888 3112
cell : +1 734 612 4615
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