HP StorageWorks 12000 - Virtual Library System EVA Gateway Manual page 174

The tape export will stack the virtual cartridges to replicate (i.e., the cartridges that contain the full
backup) onto the available physical tapes in the selected SAN destination library. The tape export
GUI will show the export status to the tape handler to determine which physical tapes are ready for
removal, whether new tapes need to be loaded, etc.
The format of these export/import tapes is unique via this process and associated with the physical
tapes is a catalog which is sent over the WAN to the remote site as soon as the tapes are produced.
On the subsequent import at the target site, the tape stack is read into the VLS and referenced using
the catalog that was sent via the WAN.
You must plug an HP Fibre Channel-attached tape library into the storage ports of the target device
and add it as a "SAN Destination Library." Then you can run the "Import Tapes" task in the GUI to
perform the tape import on the target. This will prompt to select the SAN destination library to use for
the import and then instruct which tapes to load into this library, show the import status to the tape
handler to determine which physical tapes are ready for removal, whether new tapes need to be
loaded, etc.
Once tape initialization is complete (all tapes successfully imported into the target device), subsequent
replication jobs will be transferred over the LAN/WAN to the target device. In the case where you
may need to override tape initialization (for example, a tape could not be imported because it was
lost) you can force the switch to LAN/WAN replication using the "Cancel Tape Transport" task.
WAN Initialization
In certain circumstances where the volume of data required to be transferred for the initialization
process is small and the link speed allows it to happen in a reasonable time, the WAN link itself can
be used to initialize the target device. See the following diagram. To implement this way of tape
transfer you should leave "Initialize via Tape Transport" unselected when creating the echo copy
pools.
174 Virtual Library Systems