HP B6960-96035 - Manual (Page 231)

4. The CSM starts the Media Agents on the systems with devices configured for
copying. The Media Agents load the source and target media allocated
according to the backup policies.
5. Media Agents read the data from the source media and connect to the Media
Agents loaded with the target media.
If destination devices are not specified per object, Data Protector selects them
automatically from those you selected in the object copy specification according
to the following criteria in the order of priority:
• destination devices with the same block size as source devices are selected
before those with a different block size
• locally attached devices are selected before network attached devices
6. Media Agents loaded with the target media accept connections from the Media
Agents loaded with the source media and start writing object copies to the target
media.
If the block size of the source device is smaller than the block size of the
destination device, blocks are repackaged at this stage of the object copy session.
7. When the object copy session is completed, the CSM closes the session.
How many sessions can run concurrently?
A number of object copy sessions can run in the cell at the same time. This number
is limited by the resources in the cell, such as the Cell Manager and the systems with
connected devices.
Concepts guide 231