Subject: Re: SCSI vs. IDE
To: None <wojtek@3miasto.net>
From: Charles M. Hannum <abuse@spamalicious.com>
List: netbsd-users
Date: 04/30/2001 00:43:13
On Mon, Apr 30, 2001 at 09:14:33AM +0200, wojtek@3miasto.net wrote:
> > 
> > Old stories/myths. Five years ago (the last time I dealt with SCSI in 
> > Unix), the story was "SCSI is faster and more reliable than IDE". I 
> > know the "faster" part has gone away, but I don't know about the 
> it IS faster asd it can take more than one request at once and then
> allowing disk firmare to perform them in optimal sequence.

It is, in fact, no longer any faster.  Ultra-3 SCSI was an attempt to
pull ahead of ATA again in raw interface speed, which was readily
trumped by ATA-100.  In practice, both interfaces are now faster than
any HDA being manufactured, and the interface speed is just kind of
silly.

> linear transfer speed isn't much usable in unix environment.

That depends *entirely* on the application.  Linear transfer speed is
highly relevant for a large variety of applications, including video
editing and CFD.  Don't mistake your own personal usage for what a
`unix environment' is.