Scheduled maintenance for hexagon on Jul. 8th

As previously noted, we will have a scheduled downtime from 16:00 Tuesday July 8th. We will replace a faulty module and do some I/O-benchmarking which requires a reserved system. It is estimated that the machine will be available for login at 19:00.

Update, 16:00: hexagon is shutdown for hw replacement
Update, 16:45: hexagon is up.
Update, 19:10: hexagon is up and allowing users to login.