Drobo is connected and working. I get many “DISK NOT EJECTED PROPERLY” errors though the disk is still connected to the computer, unless it is disconnecting itself somehow and then reconnecting. I have been here when one showed up but never saw the Drobo disconnect. All light stayed lit and when I went to the disk it was accessible.
They seem to be happening on approximately hourly intervals: 1 hour, 3 hours, 2 hours, within minutes of those intervals.