duplicate database with several backup location

Hi,

We are using 11.2.0.2 database,  recently there was a request to duplicate the DB to another cluster.

I had backup the database using rman to one of the local mount point size around 100GB in the source system, the rman backup files take around 90GB, then I realized that I don't have such of large mount point in the target system, but i do have 2 mount points with free size 50GB each. 

usually I will used below command for restoration if target mount point large enough to put all the backup files there:

connect auxiliary /

run {

allocate auxiliary channel aux_C0 device type disk;