10-Jul-2023

CLASSE Computing Outage: Week of 24-Jul-2023 Through 31-Jul-2023

A building-wide power outage at Wilson Lab is scheduled to occur from Friday, 28-Jul-2023 through Sunday, 30-Jul-2023. Therefore, CLASSE computing services will be interrupted during the week of 24-Jul-2023, with localized disruptions before the power outage followed by a complete computing outage at the end of the week. Also, please note that, although Wilson Lab will regain power on Sunday, 30-Jul-2023, we do not expect to have most CLASSE-IT services restored until end-of-business on Monday, 31-Jul-2023. Additional recovery efforts might extend farther into the week. A detailed schedule of computing outages will appear in next week's CLASSE-IT Newsletter.

During the CLASSE computing outage, the following CLASSE services will not be available from any location, onsite or offsite:

• Remote logins via ScreenConnect, NoMachine, etc.
• CLASSE VPN and other CLASSE networks
• Central filesystems, including Samba and Globus
• CLASSE web services: wiki, Indico, Timesheet, CLASSE website, CHESS UserDB, Gitlab, etc.
• AppsAnywhere
• Network license servers (Matlab, Autodesk Vault, Cadence, Mathematica, etc.)
• Compute Farm
• Printing

However, central Cornell services will be available, e.g. Cornell email, Teams, Box, Workday, Zoom, etc. The CHESS website and CBB website will also be available.

In advance of the power outage, users may gracefully shut down their computers, although doing so will prevent them from automatically rebooting when power is restored.

Summary of availability during the power outage

		Wilson Lab (incl. modules)	Newman Lab & PSB	Wilson Annex & Pine Tree Road	Notes
Network	Wired	Not available	Not available	Available	Cornell wiring in Annex and PTR
	Wifi (Cornell)	Not available	Available	Available	RedRover, eduroam, Cornell Visitor
	Wifi (CLASSE)	Not available	Not available	---	LNS Protected
Computers	Laptops	Not available	Available	Available	No new user logins
	Desktops	Not available	Not available	Available	No new user logins
Services	CLASSE	Not available	Not available	Not available	See list of CLASSE services above
	Cornell	Available (on phones w/ data plans)	Available	Available	See list of Cornell services above

If you have any questions or concerns about the CLASSE computing outage, please contact us via a ServiceRequest.

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General network and server maintenance will occur every Tuesday from 12:00 noon to 2:00 PM. The CLASSE-IT group will always announce any expected disruptions in our NewsLetter and via CLASSE-IT-NEWS-L, but with the size and complexity of our network there is always the potential for something to go wrong. We will do our best to contain all network maintenance and planned outages to Tuesdays from 12:00 noon to 2:00 PM.

Unless other arrangements have been made, CLASSE-managed Windows systems may be updated and rebooted on Tuesday morning at 2:00 AM, so please avoid critical or lengthy operations at that time. For more details, please see SystemExpectations.

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Questions or problems? Submit a service request.

Other resources:

• CLASSE-IT Home Page
• Previous newsletters

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