The on / off switch of this device has a serial fault. It is designed so that the "ram" has such a large bias that the underlying physical button is often pressed without the user would have triggered this operation, ie the device shuts down suddenly! As you get Googled for this problem you come across a thread in the Synology forum, which confirms this.
Further weakness: Hibernate does not work reliably, the plates often go up without a corresponding user action is present. This occurs even without network activity, ie there is definitely at any process running on the NAS itself.
