> Now about that adaptor, this drive has the ability to switch to Single
> Ended mode. So what I need to know is in terms of performance 
> what would be
> the best run them as Single Ended or add the 
> adaptor/converter. I'm going
> to run them as a massive store to disk solution to cut down 
> on some backup time.

If you mean run them SE using a separate 16-bit SE SCSI adapter, as
opposed to using a Diff/SE converter with the FWD card, you'll get the
same performance either way: a 10MHz data rate over a 16-bit bus. I
vaguely recall that the MFIO card's SCSI connector is 8-bit; if that's
the case, you don't want to connect the drive there. I don't know if any
of HP's SCSI controllers are Fast-20 (a.k.a. "Ultra") or not.

> Do you have any more information about that adaptor/convertor?

There are numerous versions on the market; the ones I have are from
Ancot. Search in your favorite Web engine for "differential scsi
converter". Or search the hp3000-l archives; this topic has come up
before. Here are some sources to get you started:
 http://www.paralan.com/sd10.html
 http://www.rancho.com/converters/index.htm
 http://www.apcon.com/differential.html
 http://www.ancot.com/scsiproducts/busconvert/busconvert.html

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