The device is a backup drive in use and performs reliably so far his ministry.
Transfer rate (Write):
+ At the beginning of 95 MByte / sec
+ Now at about 80% level 85 MByte / sec
My old external eSATA drive here was actually a little faster.
The included USB 3.0 cable left me after the third or fourth plugging only USB 2.0 speed. Possibly is the male quality lousy here. Fortunately, I had yet another USB 3.0 cable. So things are going well for months.