[Gllug] re: SCSI vs Serial ATA

[t.clarke]

I have been following the SCSI vs Serial ATA discussions and the various
arguments are most interesting.   I am no electrical engineer, and am somewhat
puzzled by the argument (as I understand it) that differences between arrival
times of signals on the various 'strands' of a parallel bus as measured against
a master 'clock' signal mean that you cannot achieve effectively better the
same overall data-transfer achievable on a serial bus with no timing differences
to deal with.

If electricity flows at about 1 foot a nanosecond, the delay in one strand of
a signal over another would seem to be absolutely minimal as a percentage of
the clock-rates currently in use.   Would not a 'bit width' on a parallel bus
twice that of on a serial bus, with a smaller 'sampling window' in the middle
of the bit to cope with timing differences still achive an overall bandwidth
4 times greater than a serial bus.   Or have I missed something in the
arguments??

Tim

PS: On Servers, I am a SCSI fan !!

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