From: Tom Lane <tgl@sss.pgh.pa.us>
To: david@lang.hm
Cc: Ron <rjpeace@earthlink.net>
Cc: Scott Marlowe <smarlowe@g2switchworks.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: SCSI vs SATA
Date: Fri, 06 Apr 2007 02:00:15 -0400
Message-ID: <28551.1175839215@sss.pgh.pa.us> (raw)
In-Reply-To: <Pine.LNX.4.64.0704051312410.26199@asgard.lang.hm>
References: <HCEPKPMCAJLDGJIBCLGHMEMGHGAA.james@mansionfamily.plus.com>
<19221.1175751146@sss.pgh.pa.us>
<1175786370.9839.31.camel@state.g2switchworks.com>
<E1HZUmO-0007bS-62@elasmtp-galgo.atl.sa.earthlink.net>
<Pine.LNX.4.64.0704051312410.26199@asgard.lang.hm>
david@lang.hm writes:
> On Thu, 5 Apr 2007, Ron wrote:
>> Yep. Folks should google "bath tub curve of statistical failure" or similar.
>> Basically, always burn in your drives for at least 1/2 a day before using
>> them in a production or mission critical role.
> for this and your first point, please go and look at the google and cmu
> studies. unless the vendors did the burn-in before delivering the drives
> to the sites that installed them, there was no 'infant mortality' spike on
> the drives (both studies commented on this, they expected to find one)
It seems hard to believe that the vendors themselves wouldn't burn in
the drives for half a day, if that's all it takes to eliminate a large
fraction of infant mortality. The savings in return processing and
customer goodwill would surely justify the electricity they'd use.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, david@lang.hm, rjpeace@earthlink.net, smarlowe@g2switchworks.com
Subject: Re: SCSI vs SATA
In-Reply-To: <28551.1175839215@sss.pgh.pa.us>
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