I've got a few different setups (NASes, Storage Pools, convential JBOD server and a couple DrivePools).
My largest DrivePool is currently configured at 88.2TB usable and I've got a couple 6TB drives not in that figure used for parity (SnapRaid).
This pool is strictly for media mostly used by Plex.
I've got 4 Windows 2012 R2 servers and two are currently dedicated for multimedia. 2 are more generic servers and hold a lot of VHDX images using windows De-Duplication. Then I've got a few smaller NAS boxes used to hold typical family stuff.
But getting back to DrivePool. I'll be increasing the storage space or the 88.2TB pool in about a month (guessing) when I add the next 8 to 15 bay enclosure for more movies and especially TV Shows.
Currently stored on that pool:
160 - 3D Movies 6,200 - Movies 1,150 - Educational Video 18,700 - Music Videos 850 - NFL Games 10,100 - TV Episodes (132 Shows, 613 Seasons) Music: 4,400 Artists, 12,900 Albums, 105,000 Tracks
I have a APC UPS that I've hacked to use 4x deep cycle marine batteries to provide 3 to 4 hours backup for my entire office (instead of the built in Li-Ion which would only last 15 min.).