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From: richard@hpfcdc.HP.COM (Richard Artz)
Newsgroups: comp.sys.hp
Subject: Re: HP-IB or SCSI disks for a 300 series?
Message-ID: <5570527@hpfcdc.HP.COM>
Date: 1 Nov 90 07:09:14 GMT
References: <1413@limbo.Intuitive.Com>
Organization: HP Fort Collins, Co.
Lines: 35

Hi Dave Taylor,

>... I were to go from HP-IB disks to SCSI disks I wouldn't necessarily 
>see any sort of performance improvement.

That's what I've heard too. But here's my $0.02 worth.

I recently switched from a pair of 7937 (571Mb) to a C2213A with two 
663? Mb SCSI drives. Overall, the system got a bit faster. Not the
earth-shaking difference I had hoped, but in my informal testing,
I got from -25% to +40% real-time differences. My average was +10%.
I didn't have much time to make real side-by-side tests, and no
attempt at tuning, so I may be mis-representing the *real* differences. 
(i.e. your milage will vary :-)

>If that's the case, then what's the fastest, most reliable, HP-IB 
>disk available today, from HP or otherwise?  What's it list for?  

Again, I'm not an authority, but I understood the 7937 to have one
of the best MTBFs in the business (something like 7 years). I don't
know about the 2213 MTBF, but the 2213 is much smaller (somewhat 
longer than a Series 300 box), has larger capacity, and costs less.
Sorry to say I don't have any of the prices at hand. (I'm at home).
One last bit of trivia, I think the 7937 may be removed form the price
list, of course they then may show up in HP Remarketing Division.

>	Thanks for any input on this question!

Thanks for your help over the years :-)

Richard Artz / OSSD Learning Products / 303-229-2036 / richard@hpfcww.fc.hp.com
 Hewlett-Packard / MS11 / 3404 E. Harmony Road / Fort Collins, CO 80525-9599 
This response does not represent the official position of, or statement by, the
Hewlett-Packard Company.  The above data is provided for informational purposes
only. It is supplied without warranty of any kind.