Gordon Henderson wrote:
On Thu, 24 Aug 2006, Adam Kropelin wrote:
Generally speaking the channels on onboard ATA are independant with any
vaguely modern card.
Ahh, I did not know that. Does this apply to master/slave connections on
the same PATA cable as well? I know zero about PATA, but I assumed from
the terminology that master and slave needed to cooperate rather closely.
I don't know much about co-operation between master & slave, but I do know
that a failing PATA IDE drive can take out the other one on the same bus -
or in my case, render it unusable until I removed the dead drive,
whereupon (to my relief) it sprang back into life.
This was many many moons ago before I started to use s/w RAID, but it's
one thing that would kill a multi-disk array, so I've never done it since.
I guess the same could happen on SCSI, but I suspect the interface is a
little better designed...
Until recently I was working with 38 systems using SCSI RAID controllers
(IBM ServeRAID Ultra320). With several types of SCSI drives I saw
failures where one drive failed, hung the bus, and caused the next
command to another drive to fail. At that point I have to force the
controller to think the 2nd drive failed was okay, and then it would
recover. I'm told this happens with other hardware, I just haven't
personally seen it.
From that standpoint, the SATA on the MB look pretty good!
--
bill davidsen <davidsen@xxxxxxx>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
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