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Date:      Mon, 30 Nov 1998 15:38:40 -0800
From:      Mike Smith <mike@smith.net.au>
To:        "Jason C. Wells" <jcwells@u.washington.edu>
Cc:        Mike Smith <mike@smith.net.au>, FreeBSD-chat <freebsd-chat@FreeBSD.ORG>
Subject:   Re: Diskless Workstations 
Message-ID:  <199811302338.PAA06488@dingo.cdrom.com>
In-Reply-To: Your message of "Mon, 30 Nov 1998 12:06:08 PST." <Pine.BSF.4.05.9811301155550.419-100000@s8-37-26.student.washington.edu> 

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> >> It seems that running diskless has a serious advantage of using the same
> >> disk space for all of the programs that all the users need. 100baseT can
> >> compete with UW-SCSI bit for bit on bandwidth.
> >
> >No it can't.  And NFS doesn't compete for latency.  But many users 
> >don't need that sort of filesystem throughput.
> 
> If 100 Mbps => 80 Mbps then 100bT is as good or better than UW-SCSI on
> bandwidth. This is what I based my statement on. It appears that I have a
> concept error somehow. The numbers look right to me. Can someone steer me
> straight?

Mb != MB.  Wide SCSI at 40MHz gives 80MB/sec.  100Mbps ethernet may 
give you as much as 9MB/sec over NFS (if you're very lucky).

> Thanks for the insight from all who replied. I sent that email some time
> ago. Is the list only now receiving it?

No, I'm just working through the backlog that a week at Comdex built 
up, and attacking some more of my outstanding backlog.

-- 
\\  Sometimes you're ahead,       \\  Mike Smith
\\  sometimes you're behind.      \\  mike@smith.net.au
\\  The race is long, and in the  \\  msmith@freebsd.org
\\  end it's only with yourself.  \\  msmith@cdrom.com



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