So far I have had no problem with this device. It took me a couple of days to put the information I needed to have access too from among 3 computers I use for various projects in my house. At times the exchange of information was slower than expected and hung up a few times, for me this was to be somewhat expected initially. I will run a program on it later to hopefully pare down the usage because I am sure it is filled with some duplicate files.
My hope is to be able to share and exchange files between my computers without having to use usb dongles or sd cards and so far this is working.
I am hoping this holds up well and will give me a few years of NAS service.