Most of the services provided by the IT Department - including WLCG production services - will remain available during the CERN annual closure (22 Dec - 6 Jan). No interruptions are scheduled but in case of failure, the restoration of services cannot be guaranteed. 

Problems will be dealt with on a best effort basis only.  However, please note:

• Experts should be reachable to start investigation of the following services within about half a day except around Christmas Eve and Christmas Day (24 and 25 December) and New Year's Eve and New Year's Day (31 December and 1 January): databases, Linux, lxplus, lxbatch, Mail, Printing, Network & Telecoms, Vidyo, Windows & Windows Terminal Services, account activations, password resets, Castor, EOS, AFS, CDS, Indico, Inspire, Twiki, SVN, CVS, JIRA issue tracking, Grid (SAM, Nagios, messaging), CERN Grid Services, and the room-booking system. Incidents will be documented at http://cern.ch/itssb.
• All network and telecom services will run as usual, the first-line support will operate normally, but no change requiring a human intervention will be possible.
• The backup service will remain operational, but backups cannot be guaranteed and file restores may not be possible.
• For the Castor service, damaged tapes will not be processed.

Please note that the operator service where urgent problems may be addressed will be maintained throughout and can be reached at 75011 or Email: computer.operations@cern.ch.

For GSM SIM cards problems, there will be an on-site piquet 3 hours per day (not on Christmas and New Year's day), reachable through the operator service.

Potential computer security incidents should be reported to Computer.Security@cern.ch or 70500 as usual.

To request a computer account activation or password reset during the CERN annual closure, please read instructions here.

The Service Desk will be closed but can be reached at 77777 from where calls will be redirected to the appropriate support groups.

Please remember to shut down and power off any equipment in your office that is not required during the annual closure.