Hard drive "oscillates"!
12-Jul-92 04:10:30
Sb: #61932-Hard drive "oscillates"!
Fm: daniel wolf 70250,626
To: Don Curtis/SYSOP 76703,4321
as Brian Cowan mentioned in one of his replies to me on this thread,
recognizing the SCSI FORMAT UNIT command doesn't mean the drive will even
actually do it – Brian mentions that some drives simply return a 'operation
successful' reply to such a command – and I think there are probably good
reasons why this is so especially on newer variable sectors per track
drives. I'm not even sure the heads are fully capable of resolving the
magnetic flux densities and detail required to properly format such drives.
You are right about IDE, these are all factory formatted, too, but I did
indeed mean to refer to SCSI as almost all (anyone correct me if they know
of a counterexample) stuff coming out now is indeed factory 'low level'
formatted. I believe most newer scsi drives AUTOMATICALLY recognize bad
sectors whenever encountered and remap them completely transparently to the
user and completely independently of the low level format process. This is
certainly the implication of much of the manufacturer info I've been
getting on newer drives. I think the on-board smarts are much smarter
these days than the SCSI standard requires. The drives are much much more
sophisticated and faster than even two years ago. The new technology I'm
encountering as I try to keep up to stay competent at selling drives
intelligently is extraordinary! There is more there than meets the eye.