Best Buy has the WD easystore 8TB External USB 3.0 for only $159.99. This is a fantastic price for a 8 TB harddrive. You also get a free voucher for Shutterfly — either $20 off any purchase, or a free 8×8 photo book.
This deal is especially popular because WD appears to be using 8 TB Western Digital “Red” hard drives inside these external drive enclosures. Instructions are available on how to extract the drive from the enclosure. This is a fantastic deal as the Western Digital “Red” hard drives (suitable for NAS) typically go for about $265, making this about a $100 savings over buying the drive itself.