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Article View: comp.sys.ibm.pc.hardware.misc
Article #609

Re: Is it possible to actually get a 16 MB/sec data transfer rate w/ an EIDE drive?

#609
From: Keith R. Williams
Date: Sat, 13 Dec 1997 00:00
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On Thu, 11 Dec 1997 13:52:34, 4ms2u$ms@michaels.demon.co.uk 
(Michael Salem) wrote:

> This discussion of SCSI vs EIDE/UDMA has been very interesting. The 
> conclusions seem to be:
> 
> In situations where mutiple disc access requests are infrequent, the latest
> EIDE technology performs comparably to SCSI with similar hardware.
> 
> With multiple simultaneous disc access requests, SCSI is faster.
> 
> In other words, by and large, use EIDE (cheaper) on users' workstations, 
> SCSI (faster) on file servers handling many access requests.

The only exception I've seen to this is in Digital Video, where 
the latency of the disk demands 7200RPM UW SCSI drives.  I 
haven't heard from anyone successfly doing this on UDMA drives.

> One other point related to economics: maufacturers usually bring out their
> latest improvements in SCSI first (for the same reason books are first 
> published as expensive hardbacks), so a leading-edge SCSI drive is likely 
> to be better than the latest EIDE.

Maybe, but the real money is in the mass market IDE arena.  I see
some pretty impressive stuff here.  The SCSI arena may be the 
cream, but the money is in the cheese.

----
  Keith
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From: krw@ibm.net (Keith R. Williams)
Subject: Re: Is it possible to actually get a 16 MB/sec data transfer rate w/ an EIDE drive?
Date: 1997/12/13
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References: <348f685a.259490677@news.ebtech.net> <881848354snz@michaels.demon.co.uk>
Organization: IBM.NET
Reply-To: krw@ibm.net
Newsgroups: comp.sys.ibm.pc.hardware.misc,comp.sys.ibm.pc.hardware.chips,demon.tech.pc,alt.comp.hardware,comp.sys.ibm.pc.hardware.storage