[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Edlug Archive Mar 2004 ]

Re: [edlug] DVD RW disks for backup - advice

Hi Stephen,
Thanks for correcting me on that. My view was over simplistic.

> You're assuming that a bad sector is the only form of hardware failure
> you care about.  That's just not true.  If you get a single bit
> corruption somewhere, for example (could be a cable problem, a disk
> problem, a CPU problem, bad cache memory or bad ram, or a plain overheat
> due to a fan going bad) then that corruption gets written back to the
> filesystem on both disks; and if it's in key metadata (an allocation
> bitmap or an indirect block) then subsequent fs activity can corrupt
> other files that you weren't even touching at the time.
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