I need to know the amount of disc space i will be needing using the MS Analysis Services.

Is there a way i can calculate how much disc space will be used in several senarios?

for example: i know i have n dimensions and y rows of data, and i what x percent of aggrigations, the disc space would be..... some kind of calculation function using all these parameters....

Is there some kind of estimation i can do in order to calculate this amount of disc space?