14 Aug
2012
14 Aug
'12
1:32 a.m.
On 08/14/2012 04:06 AM, TeoZ wrote:
Sure...then we moved to LVD.
There was a brief hop to just differential SCSI (higher voltage then LVD
which is how LVD got its name). HVD and SE/LVD don't like each other
while the other SCSI standards did with some tweeking.
This overlapped entirely with SE SCSI to the end, though. HVD was
used in very high-end machines (Tandem and Cray come to mind) for the
better noise immunity for longer cable runs. It really wasn't a hop
I'm
talking about its technical implementation, not the business
implications. ATA was very much at the "end of its road" in terms of
its design by, say, 1993 or so. We saw how long it lasted after that,
for no good reason.
Meh... You could say the same thing about single ended SCSI though. from SE to HVD then to LVD.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA