Originally posted by: benzlexus
I have a Hitachi AMS2300 array with eight shelves. We were not able to reach our virtual machines that reside on the Hitachi. When I checked the Hitachi there was a red light on disk shelf five. I logged onto one of the controllers and checked the logs and had this message: HH7800, The array unit is missing (Unit-05). Checked the back of disk shelf five and there was still power to both power supplies. The array was rebooted and everything came back up fine. I'm trying to find out what could possibly cause this to happen so that it doesn’t happen again. Thanks.