UPDATE: Feb 5, 2015 22:15 US/EST: All systems needing a reboot have been done; minor work remains on scattered cluster nodes, and two internal but non-critical servers.

UPDATE: Feb 5, 2015 21:00 US/EST: network maintenance has been done; cluster restoration and required reboots are in process. public.nrao.edu is accessible.

UPDATE: Feb 5, 2015 19:26 US/EST: work on the Exchange Server has concluded.

On Thursday, February 5^th, 2015 between 7:00pm and 11:00pm , the core network switch in the NRAO Charlottesville computer room will be down for necessary preventive maintenance.  During this time, some (but not all) services operated out of Charlottesville may be inaccessible for some periods of time.  We are using this opportunity to apply necessary reboots to several servers.

The ALMA science helpdesk will not be affected.

The Exchange server will be minimally affected (~15 minutes downtime).

Affected services (externally accessible):

• www.nrao.edu
• science.nrao.edu
• info.nrao.edu
• public.nrao.edu
• almascience.nrao.edu (but almascience.eso.org and almascience.nao.ac.jp unaffected)
• library.nrao.edu
• find.nrao.edu
• safe.nrao.edu
• bos.nrao.edu
• listmgr.nrao.edu

Many internal services will also be affected, including NAASC Cluster nodes, Lustre, Filer shares, Unix CV Mail Servers, Sharepoint, and a few others.

We will make every effort to minimize the actual downtime, but please do not count on anything served from NRAO/Charlottesville being accessible during this time.

 – Pat Murphy, Info Services Site Manager, NRAO/Charlottesville.