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Re: Two hard drives --- what to do with them?

From: Bruno Wolff III <bruno(at)wolff(dot)to>
To: Shane Ambler <pgsql(at)Sheeky(dot)Biz>
Cc: Peter Kovacs <maxottovonstirlitz(at)gmail(dot)com>, Jeff Davis <pgsql(at)j-davis(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Carlos Moreno <moreno_pg(at)mochima(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Two hard drives --- what to do with them?
Date: 2007-03-01 03:35:21
Message-ID: 20070301033521.GC14102@wolff.to (view raw or flat)
Thread:
Lists: pgsql-performance
On Wed, Feb 28, 2007 at 05:21:41 +1030,
  Shane Ambler <pgsql(at)Sheeky(dot)Biz> wrote:
> 
> The difference between SCSI and IDE/SATA in this case is a lot if not 
> all IDE/SATA drives tell you that the cache is disabled when you ask it 
> to but they either don't actually disable it or they don't retain the 
> setting so you get caught later. SCSI disks can be trusted when you set 
> this option.

I have some Western Digital Caviars and they don't lie about disabling
write caching.

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