Main Campus Data Center Uptime Report

Fiscal Year Scheduled Maintenance (hours) Unscheduled Downtime (hours) Percent Downtime Percent Uptime
2003 0 0 0.00% 100.0%
2004 0 4 0.05% 99.95%
2005 0 0 0.00% 100.0%
2006 0 6 0.07% 99.93%
2007 0 6 0.07% 99.93%
2008 4 1 0.06% 99.94%
2009 6 4 0.11% 99.89%
2010 0 0 0.00% 100.0%
2011 18 0 0.21% 99.79%
2012 0 0 0.00% 100.0%
2013 0 2* 0.02% 99.98%
2014 0 0 0.00% 100.0%
2015 0 0 0.00% 100.0%
2016 0 0 0.00% 100.0%
2017 0 0 0.00% 100.0%
2018 0 8** 0.00% 100.0%
2019 72*** 0 0.00% 100.0%

*2013 Main Data Center unscheduled outage was limited to a partial network outage due to the failure of a power breaker that feed power to a PDU. Power to the impacted network hardware was restored in less than two hours.

**2018 MCDC unscheduled outage was limited to the failure of UPS-A. The MCDC has two UPSs; prior to this outage, the Division of IT added UPS capacity to UPS-B. An additional PDU required to supply circuits in the MCDC was scheduled but had not been completed. Since this outage, a new PDU has been installed and A and B power is available for all systems in MCDC.

***2019 MCDC scheduled maintenance window did not impact operations. The large wet cell batteries for the MCDC UPS-A had reached end of life and were scheduled for replacement with AGM Batteries. During the three-day installation period, UPS-A was online but the batteries were off-line.

West Campus Data Center Uptime Report

Fiscal Year Scheduled Maintenance (hours) Unscheduled Downtime (hours) Percent Downtime Percent Uptime
2003 0 0 0.00% 100.0%
2004 0 0 0.00% 100.0%
2005 0 0 0.00% 100.0%
2006 0 0 0.00% 100.0%
2007 0 0 0.00% 100.0%
2008 2 0 0.02% 99.98%
2009 0 0 0.00% 100.0%
2010 4 0 0.06% 99.95%
2011 0 0 0.00% 100.0%
2012 4 0 0.06% 99.95%
2013 0 0 0.00% 100.0%
2014 0 0 0.00% 100.0%
2017 0 0 0.00% 100.0%
2018 1* 0 0.00% 100.0%

*2018 scheduled maintenance window that did not impact operations. The WCDC powered down one of the two power feeds to Data Hall 1B to allow for a new Power Distribution Unit (PDU) to be brought online.