> As far as I can tell, they're not totally hardware transparent. The
> Arco card sits between the hd controller and the drive. It doesn't
> require any kind of driver to be used.
Yes it does - it uses the ide driver. Similarly, a
"hardware-transparent", as you call it, SCSI card, would use the driver
for the SCSI controller. It's the case with the DPT boards, which use
the eata SCSI driver, although the raid is done completely in hardware
(the raid function itself doesn't require any driver at all). If what
you're looking for is a add-on card for a pre-existing SCSI controller,
I'm sorry, but I don't know of any.
MST