TigerDirect offers the Seagate 4TB Serial ATA 6Gb/s Internal Hard Drive for NAS, model no. ST4000VN000, for $179.97. Coupon code "LXO121972" cuts it to $149.97. With around $7 for shipping, that's the lowest total price we could find by $17, although we saw it for the same price with free shipping last week. It features a 64MB cache, NAS error recovery control, improved vibration tolerance, and advanced power management. Deal ends today.