How much Space needed for MSDP deduplication database

Hello,

We are creating MSDP deduplication pool of 16TB. Backened storage is hosted on Raid 6. I have read it in admin guide that it is recommended to have the deduplication pool in different volume possibly on faster raid group like Raid 10.

But I am not able to find out what should be the size of that different volume? Please let us know if we have some time of mapping table that for this much storage we need this much of databse space. We need to carve out that much big LUN from the storage and assign it to the media server.

Hope my question is clear.

Thanks in advance.