I have 1 main desktop which runs my media management software, torrenting, irc clients. This system has one ssd for the os, 4 1tb drives and 2 2tb drives. I also have another two terabtye nas and a freenas with 4tb zfs volume for on access multimedia. I also have two other freenas boxes with zfs volumes which back everything up that is currently still airing. (ZFS is perfect for redundant failover.) Once a show has finished airing they are moved to smaller hard drives which are in static bags.