Update: This deal has ended.

Best Buy is offering the WD 4TB Internal SATA hard drive on sale for $109.99. That's about $30 less than the price at other retailers like Newegg.

This WD 4TB Hard Drive is designed for your home/office and small business. It is for network-attached storage environments with one to eight 3.5-inch and 2.5-inch drive bays and is capable of handling your increased workloads. The 4TB drive operates using an SATA III 6 Gb/s interface, a 64MB cache, and a speed of 5400 rpm, all of which help to ensure uninterrupted data transfers with a sustained rate of up to 150 MB/s. Its 4TB capacity provides plenty of space to house files, and the SATA interface lets you connect your laptop or desktop.

If you haven't bought your NAS device yet, we'd recommend the Synology DS216+ or something similar. Synology and QNAP are two of the top brands for NAS.

See at Best Buy