Sharing the Same Drive for B2D and DEDuplication

I have a new Server 2012R2 running BE2015.

I have two 10TB Volumes(drives) for backups.  there is also a seperate OS drive.

I want to run B2D and DeDuplication jobs to the each of the volumes.

Then put both in a disk pool.

This would allow for me to take a volume offline (out of the pool) when there is a drive failure and not affect backups.

So what are the pros and cons for putting b2d and DD on the same volume?