We have a cube which is currently taking 14 hrs for 15 months of data.
Our requirement is to show at least 12 months of data means if we are in Jan 2011 we have to 2010 complete year.
These cubes are refreshed in the 1 week of every month. In our fact data will be updated for 3 month (current + 2).
Example: If we refresh cube in Sep 1st week - ETL will update data in the tables for June, July and August.
Please let me know if anyone knows about it. Also, if any workaround.