UPDATE for Sunday, April 13, 2014: on Electrical Maintenance in VT Data Center: Electrical maintenance was performed at AISB this morning. The work started at 7AM and was completed at 8:35AM. Research computing resources as previously announced remain down until the system administrators can bring them back up.
In the state of reduced redundancy, one of the main hypervisor pools lost a power supply and several services were affected: Banner, Instant Messaging, and e-mail routing, among others. All of the affected systems are back up. E-mail deliveries may be delayed for some time, however, as systems re-process their queues.
Saturday, April 12, 2014: Electrical maintenance will be performed this weekend at the Virginia Tech Data Center in the Andrews Information Systems Building. All Advanced Research Computing (ARC) clusters will be unavailable as of Saturday morning, April 12, 2014, when they are turned off to prepare. These include BlueRidge, HokieSpeed, HokieOne, Athena, and Ithaca.
On Sunday, April 13, 2014, these machines continue to be down, and the risk to other systems is slightly elevated, but no outage or degraded performance is expected.