Re: Create more then one backupset to one tape
2003-05-15 18:39:41
On Friday 16 May 2003 00:46, Christian Svensson wrote:
> Hi Everyone!
> Do anyone know if is possible to create more then one backupset to one
> tape.
> Becuse each backupset is only 5 GB large and I only have AIT-3 tapes to
> send the backupset data to.
> And I going to use this backupset to send offsite.
Actually TSM uses a new *volume* per backupset. Normally this is equal to a
new tape, but by using server-to-server virtual volumes you can effectively
consolidate multiple backupsets onto a single physical volume.
This is best done between two TSM servers, where the on-site TSM server sends
the backupset (virtual volume) to the off-site TSM server electronically via
the server-to-server communucations. Of course this requires that you have a
sufficiently fast WAN...
Alternatively you could define a "loopback" TSM server-to-server definition.
The TSM server then sends the backupset (virtual volume) to itself via the
server-to-server definition. The TSM server can then consolidate the
backupset (virtual volume) onto a single physical volume. Finally, if you
want to send this data off-site, you would need to either create a copypool
of the storage pool containing the backupset volumes, or simply checkout the
primary storage pool volumes and send them offsite.
One problem with this approach is that the backupsets are no longer "external"
to TSM, and are actually stored in the normal storage pools.
Whether this is useful to you depends on why you need to create backupsets in
the first place. If you are just creating backupsets for "monthly archival"
purposes, then it's probably acceptable. But, if you want the ability to
restore the backupsets via a locally attached tape drive on a client, then
you should not use this method.
Regards,
Steven P.
--
Steven Pemberton Mobile: +61 4 1833 5136
Innovative Business Knowledge Office: +61 3 9820 5811
Senior Enterprise Management Consultant Fax: +61 3 9820 9907
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