Since early last year I've had a three tier setup with an SSD for OS and games, then a HDD for media (scratch copies of videos while editing and converting), then a NAS for long term protected storage (backed up to crashplan, raid 6 array).
Recently I've moved from a couple of laptops to a single workstation and have combined all the spare drives so I now have two 240GB SSDs in RAID 0, then misc HDDs using windows storage spaces for spanned storage, think that's about 800GB across 3 drives. Finally the NAS is 13TB actual, 7TB effective (one 3TB is being used as a 2TB, then two drives of parity lost, then a little extra for all the ZFS gubbins).
So, about a terabyte of which 400GB is SSD. For more I go to the network.