About Multicube vs a giant cube with Aggr

Hi Gurus,
i got this question, whay is the best decition about design,
1- create a cube per year that is feed from ECC , for example cube data 2011 and cube data2012 and above this one, a Multicube, then the report
2- Create a Giant Cube with aggregates
help guys,

Hi Jorge
I would go for option one but still have aggregates.
Option 1 actually splits your data in different cubes. Cubes with less data is always favorable for administrative work and report runtime.
Like compression, roll up, creation and deletion of Index is easier in small cubes. Moreover if there is any issue in data level you can always check from smaller cubes fast. If the cube is very large Display Data is a pain.
One more point is , once you load historical data in different cubes, you do not need to touch them because they are already frozen. You just need to take care of the cube which contains current data.
Aggregates on the other hand takes extra space on the database. Administration of aggregates is also required . Like daily roll up adds to your data load time. More over aggregates are very specific to query. One aggregate can not satisfy all the query.
It's better to have different cubes and then you can have small aggregates on those cubes. This would make your administration easy and query response time will be faster.
PS: If multiprovider has different cubes for 2010,2011 and 2012 even if the query only wants 2012 data , backend system would read 2010 and 2011 cubes also. You can have a filter on 0INFOPROV in query level to prevent that.
Regards
Anindya

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