I have worked with these things quite a bit in the past, and I think we had one of this particular model that died. If I'm not mistaken, this is basically a small NAS type MyBook (rather than the simple USB external drives). The biggest problem with these devices is that the hardware is not so good. After awhile, they just die. I've seen quite a number of MyBook devices die mysterious deaths, never because their internal hard drives went bad, but always due to other hardware failures. The second major issue with this type of device is that the actual capabilities of the hardware are very low. If I remember correctly, the NAS models had only 32 MB of RAM. They definitely can't handle two or more connections with any competence (and will fail the transfers quite readily when they are not up to the task).
In one ridiculous episode, we had about two dozen Oracle databases that were sending their nightly backups to this puny little thing, and the cron jobs had to be staggered very carefully to avoid two machines connecting at the same time. If there was significant overlap, the transfers would fail. The poor person who had to maintain this ridiculous system (but who of course did not set it up!) was myself. There are too many stories I could tell about having to deal with these things, and how unsuitable they are for even the smallest business..... At some point you will probably end up prying open the case and attempting to retrieve the hard drive after the other hardware fails. The end game was that I finally got sick of just waiting for these things to die. I put two 500 GB drives in an old IBM PC, installed Linux with software RAID-1, and called it a day. Since that time, the little IBM PC has saved us at other times when other storage schemes failed. It can handle any number of connections I give it without breaking a sweat.
We currently have a similar WD 2TB NAS device that is now collecting dust because I don't trust it with anything. Actually, we have a number of large drives just sitting around just because they were pulled from dead MyBook devices. But I digress... The best thing about these little boxes is that they can be opened up, and their hard drives can be removed. You may have to use a screwdriver, and bend some metal in the process use your strength (depending on the model), but it's possible. For your own sanity and wellbeing, I would highly recommend putting the hard drive in another machine, and using it in that capacity. You will thank yourself later.
Debian GNU/Linux on a ThinkPad, running a simple setup with Fvwm.