DATA Volume

Hi Gurus,

I would like to find the volume of data currently existing in an ODS and a Cube. I also would like to know what is the average size of the delta loads (Daily) from an ODS into a cube .....

Another question is how do i estimate the data volume of a non existing ODS (Means- I am trying to make this ODS and it is planned to be fed from 3 different ODS's). Answers will be rewarded...

Thank You

Southie