I spent all night trying to coax Plex on my FreeNAS box to output the stats on my media from its SQLLite database. Finally was able to do so. So!
Storage: 15 TiB of storage.
Used by media: 8.02 TiB
HRS:MIN:SEC of video:
111 days, 2 hours, 33 minutes, 40 seconds
Or to put it in another way, I have 3.7 months of video....and I'm still ripping. xD
The thing is? 85% of this is content ripped from my collection. The reason I built this thing was to place all the disks in a few wallets, the boxes up in the attic, and free up much needed space. Mission is mostly accomplished. I have about another month left of work.