5900 RPM drives

TJ Varghese tj at tjvarghese.com
Sat Aug 14 03:57:24 UTC 2010

On Sat, Aug 14, 2010 at 9:52 AM, Ryan Coleman <ryan.coleman at cwis.biz> wrote:

> Can anyone give me any reasons to buy these over 7200RPMs for a RAID? I may
> need to pinch pennies if I have to finance my next servers out of pocket.
> Stupid idea, I know, but I really want to know if there's a reason to skimp.
Specific models that you're considering would be good. For WD, if you're
referring to the WD's GreenPower (non-RAID Ed), there are 2 gotchas

1) no support for TLER any longer - this IMHO is a deal breaker for RAID
2) ridiculously low sleep times (6s) to maximize power savings - in a
server, this would cause extreme load cycles, however this setting can be
set to less extreme numbers using wdidle.

The main technical criterion for any HDDs to be used in a raid IMO should be
TLER support IMO. Speed/capacity would be secondary concerns.


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