Newegg offers the Seagate 2TB NAS Serial ATA 6Gb/s Internal Hard Drive, model no. ST2000VN000, for $99.99. Coupon code "EMCYTZG296" cuts it to $89.99. With free shipping, that's the lowest total price we could find by $10, although we saw it for $30 less (with rebate hassles) in November. It's designed for NAS systems and includes a 64MB cache.