Newegg offers the HGST 6TB DeskStar NAS 3.5" Serial ATA 6Gb/s Internal Hard Drive for $174.99. Coupon code "EMCBCRB54" cuts the price to $159.99. With free shipping, that's $20 under our October mention and the lowest price we've seen. (It's a current low by $8.) Designed for use in NAS systems, it spins at 7200 rpm and features a 128MB cache and reliability measure of one million hours MTBF. Deal ends December 4.