Technically you can. If your files are on an NTFS file system, it's better to move them to a ZFS based file system. It has its own advantages.I can connect all my External HDD to the NUC and it could do that automatic mapping and access right?
Currently have 6 drives in 3 pairs of RAID 1 on a Z87 board. Thinking of building a NAS box so exploring FreeNAS etc. I read some confusing posts about RAM curropting files and such when NOT using RAID. Since i am using RAID, i wanted to know if there's an advantage going with FreeNAS and ZFS...