Hi,

On 4/2/2007 1:46 PM, Andrea Venturoli wrote:
> Hello.
> I'm doing full backups monthly on tapes and differential/incremental on 
> an HD meanwhile.

Have you tried restoring, so that you need both tape and file volumes?

> I finally convinced my customer that tapes need to be brought outside 
> their building, so they decided to make two copies, bring one outside 
> and leave the other at hand in case it's needed.
> 
> What's the best way to do this?

Erm... well.

Wait for copy jobs :-)

> I thought of defining two storage pools and running the job twice (once 
> on each one), but this ain't that perfect: they are going to be slightly 
> different copies,

Right, but in many cases that's ok. It's a policy decision, I'd say.

> and they both will count as base for subsequnt 
> differential/incremental backups.

Yes. Run the off-site job first.

> I could do the job and then dd from tape to HD and from HD to the second 
> copy. This is going to be very slow,

Yes, and it puts some extra stress on your tapes. Not really serious, 
but there are people who want their off-site copy on absolutely perfect 
tape. Others prefer to have a proven tape off-site, i.e. one where they 
did read the data from once. A matter of priorities...

> but, apart from that I don't see 
> any real drawback, provided I don't insert a "copy" tape, when it's 
> original one has been purged. (What would happen in that case, I don't 
> know).

I guess you want to write-protect your off-site copies and verify that 
setting whenever you load one :-)

> Other hints?

Not really...

Arno

>   bye & Thanks
>       av.
> 
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IT-Service Lehmann                    [EMAIL PROTECTED]
Arno Lehmann                  http://www.its-lehmann.de

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