IBM Cognos TM1 Developer's Certification Guide

Other advantages of virtual cubes

The use of virtual cubes in your solution may also simplify the development of some TM1 active reports and websheets by centralizing information into a single location. In fact, some active reports may not be possible without the use of a virtual cube.

For other software, your organization may use TM1 cubes as a reporting source and may require all data to be located in a single cube. Of course, the performance must be evaluated and may require that you use a standard TM1 cube loaded with static data in some cases.