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Scheduled maintenance windows through July 2023 announced

All maintenance windows from August 2022 through July 2023 have been scheduled and posted to the UIS Business Calendar.

Each year, UIS partners with campus and System Administration leaders to determine dates when enterprise and business systems can be brought down for maintenance. The University of Colorado is a busy university, so it’s not always possible to avoid all business cycles, but we strive to have minimal impact to campus operations.

The UIS Business Calendar is also used to plan maintenance events tied to projects and to document important campus and business cycle dates. This allows departments, faculty, and staff to identify enterprise system outages and plan accordingly.

Maintenance Windows

Non-production maintenance typically occurs on a Friday and production maintenance generally occurs on a Sunday. The standard maintenance window runs 12 hours, from 6 a.m. to 6 p.m. Non-production maintenance windows usually occur two weeks prior to production maintenance windows to allow time to test updates before putting them in the live environment.

There are exceptions throughout the year, dependent on the level and type of work required. Extended windows and those occurring on a non-standard day are requested ahead of time for confirmation with campuses and business offices.

This year, UIS is introducing tentative production windows, on the weekend following a regularly scheduled maintenance window that requires complicated updates. We do not anticipate needing the tentative window but prefer that campuses are aware well in advance in case those windows become necessary. 

Keep up to date on all maintenance window communications including updates and changes, full details on affected systems, and more by subscribing to Maintenance Matters.

Production windows

Production windows affect our "live" systems with real-time data used by students, staff, and faculty. When there is a production window, most systems will not be available to users, unless a production communication states otherwise. Windows outside of the normal 12-hour maintenance window times or days of the week are represented in bold below.

  • August 2022 — no window
  • Saturday, July 23, 2022 — Production Maintenance and Critical Patch Updates: (6 a.m.–6 p.m.)
  • Sunday, September 25, 2022 — Production Maintenance: 18-hour window (6 a.m.–11:59 p.m.)
  • Sunday, October 9, 2022 — Production Maintenance Window for HCM/ICS tools upgrade (6 a.m.–6 p.m.)
  • Sunday, October 23, 2022 — Production Maintenance: (6 a.m.–6 p.m.)
  • Sunday, October 30, 2022 — Tentative Production Maintenance: (6 a.m.–6 p.m.)
  • Sunday, November 20, 2022 — Production Maintenance: (6 a.m.–6 p.m.)
  • Sunday, December 18, 2022 — Production Maintenance: 18-hour window (6 a.m.–11:59 p.m.)
  • Sunday, January 22, 2023 — Production Maintenance for Critical Patch Updates:6 hours (6 a.m.– 12 p.m., noon)
  • Sunday, January 29, 2023 — Tentative Production Maintenance: (6 a.m.–6 p.m.)
  • Sunday, February 19, 2023 — Production Maintenance (6 a.m.–6 p.m.)
  • Sunday, March 19, 2023 — Production Maintenance (6 a.m.–6 p.m.)
  • Saturday, April 22, 2023 — Production Maintenance and Critical Patch Updates: extended 18-hour window 
  • Saturday, April 29, 2023 — Tentative Production Maintenance (6 a.m.–6 p.m.)
  • Saturday, May 13, 2023 — Production Maintenance (6 a.m.–6 p.m.)
  • Sunday, June 25, 2023 — Production Maintenance extended 18-hour window (6 a.m.–11:59 p.m.)
  • Saturday, July 22, 2023 — Production Maintenance and CPU Patching (6 a.m.–6 p.m.)
  • Sunday, July 30, 2023 — Tentative Production Maintenance (6 a.m.–6 p.m.)

 

Non-production windows

Non-production maintenance windows affect the testing and development versions of CU's production systems. These mirrored systems allow UIS staff to develop new features and functionalities and test them before they are moved to production for real-time access by CU’s students, faculty and staff.

  • August 2022 — no window 
  • Friday, September 9, 2022 — (6 a.m.–6 p.m.)
  • Friday, October 7, 2022 — (6 a.m.–6 p.m.)
  • Friday, November 4, 2022 — (6 a.m.–6 p.m.)
  • Friday, December 2, 2022 — (6 a.m.–6 p.m.)
  • January 2022 — no window
  • Friday, February 3, 2023 — (6 a.m.–6 p.m.)
  • Friday, March 3, 2023 — (6 a.m.–6 p.m.)
  • Friday, April 7, 2023 — (6 a.m.–6 p.m.)
  • Friday, May 5, 2023 — (6 a.m.–6 p.m.)
  • Friday, June 9, 2023 — (6 a.m.–6 p.m.)
  • Friday, July 14, 2023 — (6 a.m.–6 p.m.)

CS PUM windows

These maintenance windows will affect Campus Solutions and student portals. Campus Solutions can also be down during scheduled production maintenance windows. These maintenance windows extend beyond the 12 hours of the normal maintenance window times:

  • Sunday, September 25, 2022 – Production maintenance and CS PUM combined: extended 18-hour window (6 a.m.–11:59 p.m.)
  • Saturday, December 18, 2022 – Production maintenance and CS PUM combined: extended 18-hour window (6 a.m.–11:59 p.m.)
  • Sunday, April 23, 2023– Production maintenance and CS PUM combined: extended 18-hour window (6 a.m.–11:59 p.m.)
  • Sunday, June 25, 2023 – Production maintenance and CS PUM combined: extended 18-hour window (6 a.m.–11:59 p.m.)

 

Comments

Timothy Thomas

Is there any way we could subscribe to this as calendar events in o365, ical, or other service? That would be really nice to not have to manually add these dates in to our individual calendars. It might also be useful for campus partners as well.
 

UIS Communications

UIS Communications sends out a monthly newsletter with the upcoming maintenance windows and ICS files to easily add them to your calendar.
 
While the calendar shows the planned windows, things do change and we want everyone to refer back to this source rather than add to their calendars and not notice an update.
 
There is an option to subscribe to the Maintenance Matters blog in the top right column at https://www.cu.edu/blog/maintenance-matters – I hope that helps!

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