IBM E16RMLL-I - Tivoli Storage Manager, Implementation Manual, Page: 469 / 828

Chapter 13. Routine tasks
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13.7.5 Off-site tape management to on-site
In this section we show how to move off-site volumes to the on-site location.
These off-site volumes either have no active data on them (status of EMPTY) or
are being returned to recreate damaged data in a primary storage pool.
Off-site tapes can be seen as your second good copy of critical data. As you
perform backup and archive operations, all data is saved in storage pools, which
are the basic unit for on-site operations. When you perform a
backup stgpool
command, Tivoli Storage Manager verifies which data has not previously been
sent to off-site yet and then performs the copy operation of any new data. This
means the operation is incremental and hence minimizes the amount of time
required to execute it.
As backup and archive data age and expire, the off-site tapes contain less and
less active data. Off-site tape reclamation consolidates these tape volumes,
replacing the partially filled tapes with full and empty tapes. The newly emptied
tapes remain in a
pending
state until after the reuse delay period has expired. At
this time the status of the tape changes to EMPTY. Empty tapes can be brought
back on-site and returned to the scratch pool.
These are the steps that you need to perform to receive tapes from off-site:
1. Identify the volumes to be brought on-site.
2. Update the volume location.
3. Move the tape volumes from off-site to on-site.
4. Check storage volumes in to a library.
Identify volumes to bring on-site
You must first check which volumes are available to return on-site. The following
query volume command shows two volumes (040AKK and 041AKK) that are now
available to be brought back, as shown in Example 13-39.
Example 13-39 More examples of the query volume command
tsm: ATLANTIC>
query volume * access=offsite status=empty
Volume Name Storage Device Estimated Pct Volume
Pool Name Class Name Capacity Util Status
(MB)