3 Nov
2010
3 Nov
'10
3:07 p.m.
On Wed, 3 Nov 2010 arcarlini at iee.org wrote:
I guess you know already but I keep coming across
people who
think that RAID means you'll never need to backup again. Quite
how they expect to recover from accidentally deleting something
important beats me.
Or a repeating situation that eats disks.
Wrong procedures can be equally destructive. At one point, Stereo
Graphics found out that one of their most important accounting files was
corrupted. "No problem, we make lots of backups". Sure enough, one week
previously, they had backed up the corrupted file onto every one of their
half dozen "backup" disks.
I had a hell of a time, and only partial success when a client's Apple ][+
would not boot. So, they tried their backup copies. Then they tried
EVERY disk they could find. Unlike the SA400 (used by TRS80, etc.), the
SA390 with Apple's own logic board could write to a write-protected disk
when the controller malfunctioned.
With the 3" drives with reversed voltages on the power connector, I wonder
how many people systematically tried ALL drives they could find before
they realized that the problem was NOT "defective drives".
--
Grumpy Ol' Fred cisin at xenosoft.com