When you said certain roles should NOT make use of a DrivePool, I was asking for some examples so I can plan ahead.
Can client backups be stored in a DrivePool?
Perhaps there is a list of types of storage/folders that should NOT be stored in a DrivePool?
Sorry if this is a bit unclear, but I'm only just starting to give up WHSv1 for Windows Server 2012 R2 Essentials with DrivePool, so I have *lots* to learn about both!