How can I seperate Planning Data into more than one cubes

Hi,all:

     In BPS,we can seperate planning data by year into several planning area,and then we can create Multi Plannning Area to copy data between each other,so we can have performance tunning.But in BPC,we just have one real-time Cube.If we have much data to manage,then what's the solution concerning about Performance?

Best Regards

Martin Xie