If your Mirra Sync and Share server experiences a brief power outage (less than 2 seconds) or a power flicker, the Mirra server will power itself down and will not start back up, even if the power button is pressed or held in.  The LED on the external power supply will be lit, however the Mirra server will appear to be dead.  To get the Mirra server back into an operational state you must unplug the Mirra server from the outlet for about 30 seconds, and then plug the unit back in.  The unit will then power itself on and boot into normal operations.