Mesa Lab Power Down April 20, 2013

On Saturday, April 20th 2013, the NCAR/CISL Data Center will be shut down to facilitate preventive maintenance on select infrastructure support systems. This is the normal spring season downtime for this purpose. Please note that this activity is a complete shutdown scheduled from 6 a.m. to 6 p.m. Some computing systems, depending on their function will begin their shutdown Friday afternoon.

Most significantly, this maintenance will include a complete outage of the computer room and all computing equipment housed therein. This is due to invasive maintenance procedures to be performed on primary electrical supply systems. Please make arrangements accordingly.

Due to this maintenance, the following services that many systems are dependent on will be unavailable from 6am to approximately 12 PM.

 - VPN Access – VPN may not become available until 2PM

- UCAS token authentication (CRYPTOCard, Yubikey)

- UCAS password access for web and mail servers

- UCAR DNS - DNS servers at NWSC will remain available, so properly-configured systems will not see an outage.

- UCAR mail servers @ ML

Once all maintenance work is completed, the systems will be brought back up in their order of dependency. CISL and Facilities Management & Sustainability maintain the 12-hour window to accomplish all tasks at hand.

Remember to shut down your office systems and/or work station at the Mesa Lab before leaving work on Friday, 19 April 2013.

If you have any questions or concerns please send a message to

Will this event be webcast to the public by NCAR|UCAR?: 
Announcement Timing: 
April 18, 2013 to April 19, 2013