HPE StoreOnce 6500 User Manual page 39

WARNING: Use with care. If the backup application can see both source and target libraries, the
application cannot distinguish between the source library and the target library because the
barcodes are duplicated in the two locations.
Why make target libraries visible?
It may be useful to make a target library visible to the backup application on the host to:
• Confirm that replication is working correctly and check the integrity of the replicated backup by doing a
test restore.
• Perform manual tape copy jobs (sometimes called tape offload) to any tape device on the network
using the backup application.
IMPORTANT: You cannot change data on a Target library cartridge; you may only load it temporarily
into a physical tape device to read it.
Best practices for using this feature
WARNING: Failure to follow best practices may cause instability and damage to your backup
system and data. Cartridges can be marked as unusable or the backup application can attempt to
write to target cartridges.
Procedure
1. Verify that no replication jobs to the selected target cartridge are in progress.
2. Verify that no backup jobs to the mapped source cartridges are scheduled.
3. Verify that the backup application media server instance to be used is not within the same cell/domain
that can access the source cartridge.
4. Import the data on the target cartridge into the backup application (this operation must be repeated
after each replicate operation to the cartridge).
5. Perform the desired operation on the cartridge, which may be:
a. Verify the cartridge using the backup application either with a verify command or by performing a
restore.
b. Copy the cartridge to a physical tape device connected to the media server.
Making a target device visible
• Create the replication mapping as normal. See Running the replication wizard (virtual tape
devices) on page 66, as appropriate.
• From the host that has access to the target library on the VTL — Libraries page, select the target
library in the Libraries list.
• Click Edit.
• The Port defaults to None. Select the appropriate Fibre Channel, depending on your system model
and configuration.
VTL (Virtual Tape Libraries) 39