Hi Guys,

thanks for the reply. OK, I see TSM will handle more tapes than the library
can physically digest. I consulted the TSM Admin Guide on this. The tapes
in the overflow location will also age, won't they? Now, what are we going
to do about space reclamation of the tapes in the overflow location? Will
some operator have to stand by just to exchange tapes? On the other hand,
this would be a better solution than checking tapes out of a primary
storage pool since no backups have to be deleted in order to supply more
scratches. Maintaining a copy storage pool on the 3575 should not pose a
problem since the customer has another 3575 in a second location. The DLT
will be another story because there is no backup changer or drive, so the
created copy storage pool volumes will prove to be quite useless in case of
a DR situation. I will have to call the customers attention to this.
Thanks anyway.

Lars


On 12.07.2002 02:03:20 "ADSM: Dist Stor Manager" wrote:

> For working disaster recovery your customer will need a *compatible*
> device to read off-site tapes. In your case if we assume primary tapes
are
> held only on 3575 and DLT autochanger is used only for off-site:
> - primary pool will use 3575. Library might be small but TSM does have
> 'MOVE MEDIA' command for that exact purpose.
> - copypool tapes will be DLT. Whenever set of tapes is built they are
> checked out and sent off-site. Thus no problems with capacity.
> - DR site must have DLT drive (not necessarily a library, manual one is
> just fine) which should be able to read tapes written by autoloader. If
> autoloader is DLT7000 drive might be either DLT7000 or DLT8000 but if the
> autoloader is DLT8000 the drive must be the same. If some primary pools
> are backed up to a copypool on 3575 then DR site must have 3570!
> Doublecheck which is backed up where.
> - do not forget to create (and send off-site) DB backups or snapshots
> after backup stg finishes.
>
> Zlatko Krastev
> IT Consultant