MSDP Migration to other disk partition

Hi All,

I need an advice, here is my scenario;

Masterbackup server on solaris have a 10 TB MSDP and now its running out of space. Now storage admin just add another 30 TB disk partititon on the server. We still need to configure new disk as MSDP but only 1 MSDP can configure to single master/media server. How can we configure new disk as MSDP without sacrifice existing MSDP Data? FYI, there is no tape library configured.

Appreciate for help.