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Date: | Mon, 9 Nov 1998 15:20:07 -0800 |
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Pete writes:
> Besides user files, there are other structures on discs which cannot be
> handled by "file moving" software. These structures include freespace
Yep...that's why the MPEX "move off" approach failed.
> maps, label table files, directory files, Transaction Manager files, and
> transient space (last is only on MPEXL_SYSTEM_VOLUME_SET discs; I really
> hate that long name).
Hey...I suggested, years ago, that HP enhance MPE to allow $SYS as
a synonym. Wouldn't be hard to do, either. :)
> BUT, be aware that this
> may well be time wasted. If you are replacing a drive you obviously
> have a problem with it and you need to be very aware of exactly what
> that problem is and treat it appropriately. If you are getting
> CORRECTABLE data errors on the drive or head positioning errors which
^^^^^^^^^^^
> the drive is handling okay for now, then doing a disc copy is probably
> going to work fine.
Yes...that's the key. The disk has to be readable for the copy
approach to work.
> HOWEVER, if the problem with the drive has caused any kind of data
> corruption then you should go to your back-up tapes or at least
> understand that there is a very good possibility you have undetected
> data corruption in files and system structures. You will likely spend
You might have undetected data corruption of file data in your backups,
too :)
--
Stan Sieler [log in to unmask]
http://www.allegro.com/sieler.html
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