Hi Claudio, if the data is already backed up there is not too much you can
do. 
Otherwise, if the data is on different file systems, you can collocate file
systems in the storage pool. This will put different file systems on
different tapes so you can do simultaneous restores. If it's all on the same
file system you need to do it through management classes and changes to your
dsm.opt file.

Mark