hi,
the compressed requests will be accessible in the E table of the cube.
To regularly perform the cube compression will be a good approach as it will always keep optimized situation of performance by creating more space only to take care is compression should not take place in business hours.
Now as said E table of the Infocube will be used and you need to change the source table name and include the new E table name
Just perform the below steps
1. Double click on the cube (the cube which you will use)
2. Click Extras--> Information(Logs/Status)--> Click Dictionary/DB status
You will get the list of all the dimension tables along with the E and F table
Thank You