> 50-pin SCSI became archaic YEARS and YEARS ago.
>
> Manufacturer capacity was changed to 68-pin (UW- and LVD/SE-SCSI) and
> 80-pin (SCA). Also various types of network-attached SCSI drives.

Seagate currently lists these SCSI drives:

9- and 18-GB Atlas (formerly Quantum, but re-branded as Seagate) SCSI drives

18-, 36- and 72-GB Cheetah (true Seagate) SCSI drives

And, even larger SCSI drives up to 300 GB

Yet, the most economical way of attaching SCSI drives most probably
remains the ACARD "SCSIDE" solution.

See ...

http://www.acard.com/english/fb0101.jsp?type1_title=SCSIDE%20Bridge&ino=43

... for more info.

I have used the 50-pin and 68-pin versions of these adapters.

The ones which I particularly favor are those which incorporate a metal
mounting adapter with an integral "SCSIDE" card.

This makes a 1" high IDE drive into a standard height SCSI form factor.

Basically, the result is a drive/adapter package which is as tall as a
so-called "half-height" drive, the very same height as an original
Barracuda SCSI drive, but with the capacity of the underlying IDE drive
(variously 500- or 750-GB maximum), whereas the original Barracuda drive
had a maximum capacity of 2- or 4-GB and only much later was extended to
9-, 18- and 36-GB, and very much later to 72-GB.


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