Re: Bulletproof backup - how to test?

"deko" <deko@xxxxxxxx> wrote in message
news:aNyve.23$0V3.14@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> A double failure from bad ram, bad controller, or bad power supply
>> is not unheard of.
>
> Okay, two more variables: bad controller and/or bad RAM
>
> Even IF both of these variables were to strike, AND my hard drive
> mechanically failed, I would just replace the motherboard (on which the
> SATA
> controller and RAM resides), buy a new system disk (or a new backup disk,
> depending on which one failed), reinstall the OS (if it was the system
> disk
> failed), and restore all my data from the good drive. Only a mechanical
> failure of both drives at the same time could cause data loss.
> Considering
> the MTBF of the drives and the statistical probability of both of them
> failing at the same time, I'd say that's bulletproof.
>
>

You really don't comprehend do you? Bad ram, controller or power supply
could easily corrupt both hard drives before the corruption is noticed. A
corrupt OS is probably the least likely reason why a backup would also
become corrupted. Your method of backing up is good for quick backups. It is
probably the least bulletproof of any backup method. Most knowledgable users
use a similar method for quick backups and another method less often for
redundancy.

Kerry


.

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