It provides one of the lowest per-terabyte ratios ... of economies of scale. A lot of DIYer have resorted to shucking external HDDs in order to extract hard drives and use them in NAS devices.

External USB/Thunderbolt drives (aka direct-attached storage ... are seeing it at a significant savings — as low as $85 for 1TB. This is great news for bargain hunters while supplies last.

But for people who deal with a lot of data ... Seagate Backup Plus Slim 1 TB External HDD – USB 3.0 for Windows and Mac, 3 yr Data Recovery Services, Portable Hard Drive, 6 Month Mylio Create ...