WD My Book external hard drive 3TB (8.9 cm (3.5 inches), USB 3.0) Black (Personal Computers)
The first copy has held three weeks (in between, however, a couple of times just in the middle frozen). Overall, about 1 TB of data were stored in about 80,000 files. The hard drive was turned on only when needed, perhaps a total of 10 times. After 5