Data recovery emergency on a downed server... Help please!!

Mon Jan 5 20:45:50 UTC 2004

On Tue, Dec 30, 2003 at 04:09:37PM -0500, Madison Kelly wrote:
> Hi again Byron,
> 
>   Oh, I would say I know a little about RAID... ;)
> 
>   I don't ship a server without -at least- RAID 1 and the new 
> replacement server does indeed have two Seagate Barracuda 7200.7 SATA 
> 120GB drives in software RAID 1 but alas the server that dies was 
> inherited and built on "budget" parts...
> 
>   I am also implementing a tape rotation on a new DDS4 drive where 
> there is a tape for Mon-Thu then four Fri tapes to be rotated. Others 
> have recommended the same scheme like you, and I have personally 
> implemented this scheme for years and it works like a charm...

Make sure the backup script does a read verify on the tape too.  In my
experience DDS is among the least reliable tapes around and don't last
very many uses at all before they start failing (unlike DLT and other
non helical scan tapes).  I doubt I would ever use a helical scan tape
drive for a backup (not that I currently have any tape drives).  The
head/tape wear is just too high.

>   I'll post an update in a sec...

Lennart Sorensen
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