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Article View: comp.sys.ibm.pc.hardware.misc
Article #621

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

#621
From: Keith R. Williams
Date: Thu, 04 Dec 1997 00:00
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On Wed, 3 Dec 1997 04:48:22, nospam_mikwon@ebtech.net (Michael 
Wong) wrote:

> >> The newsgroups are filled with stories of problems related to these
> >> damn drivers, and most people see no real-world improvement with them
> >> anyway.
> 
> >Some do have problems with busmastering EIDE but otherwise you're just flat
> >mistaken.
> 
> He is?  Based on what?
> 
> You've repeatedly claimed that workstations do almost entirely
> contiguous block file transfers (totally false), and that busmastering
> EIDE eliminates the performance advantage of SCSI in a multitasking
> multithreading environment (it does not, in my EXPERIENCE, or in the
> experience of most others in this NG).

The point is that most people cannot keep a client (better word 
than Workstation IMO) busy enough to take advantage of the 
advantages of SCSI.  The only real advantage being a somewhat 
faster rotation (important for a few client applications as I've 
pointed out) and the multiple pending requests that SCSI allows 
and IDE doesn't.  THe simple fact is that SCSI is a wast of money
on the vast majority of client systems.  It just doesn't make 
sense.
> 
> You have never been able to provide anything other than unsupported
> repetition of your statments to prove these assertions, so why are you
> surprised that people seem to be ganging up on you?

Well, I have experience on both sides.  I'm not ganging up on 
him.  I think he's dead-on.  There is no justification for the 
price of a SCSI drive on a client system with maybe a couple of 
exceptions (I've named one - DV).

----
  Keith R. Williams
  krw@ibm.net
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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: 1997/12/04
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