1920x1080x24bpp@30fps = 187MB/s or 1500Mbps, 11.2GB/min, 670GB/hr. 30TB / 670GB/hr = 44.7hrs raw. Shows and episodes wise, 30TB / 250 shows is 120GB/show, if by show GP meant a season, (120 GB) / (24 * 60 min) = 11.1 Mbps for a standard TV series, or (120 GB) / (12 * 30 min) = 44.4 Mbps for a standard 3-month anime seasons. Most 2K TV standards as well as streaming such as Netflix 4K are at 20-30Mbps bitrates, coming in already encoded in MPEG(-2/-4), so that's likely what GP is hoar-, collecting.