Horton

Re: SCSI vs. IDE performance test

Bruce Momjian <pgman@candle.pha.pa.us>

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From: Bruce Momjian <pgman@candle.pha.pa.us>
To: mikeb@netnation.com
Cc: Stephen <jleelim@xxxxxx.com>, pgsql-general@postgresql.org
Date: 2003-10-27T19:14:41Z
Lists: pgsql-general 
Mike Benoit wrote:
> I just ran some benchmarks against a 10K SCSI drive and 7200 RPM IDE
> drive here:
> 
> http://fsbench.netnation.com/
> 
> The results vary quite a bit, and it seems the file system you use
> can make a huge difference. 
> 
> SCSI is obviously faster, but a 20% performance gain for 5x the cost is
> only worth it for a very small percentage of people, I would think.

Did you turn off the IDE write cache?  If not, the SCSI drive is
reliable in case of OS failure, while the IDE is not.

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