Date: Sat, 14 Aug 2010 11:28:39 +0800 From: TJ Varghese <tj@tjvarghese.com> To: Ryan Coleman <ryan.coleman@cwis.biz> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: 5900 RPM drives Message-ID: <AANLkTimTYwBi=3qkoFOJkF0sZbmLpG_uZ=b7Ud9YkCLz@mail.gmail.com> In-Reply-To: <01DEC02A-DAE7-47B8-AD6C-3CCEFA98F311@cwis.biz> References: <01DEC02A-DAE7-47B8-AD6C-3CCEFA98F311@cwis.biz>
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On Sat, Aug 14, 2010 at 9:52 AM, Ryan Coleman <ryan.coleman@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. regards, TJ
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