I am budgeting for a TrueNAS Mini R. However, I have questions regarding the drive structure and OS. In my built TrueNAS scale boxes I set aside a boot drive, a cache drive and then the ZFS array drives. Do I need to include boot and /or cache drives in my configuration? So can I purchase 12 capacity drives; or do I need 1 cache drive and 11 capacity drives; or 1 boot drive, 1 cache drive, and 10 capacity drives. I can find nothing in the documentation on this. Any help prepurchase would be appreciated.
Thanks in advance.