Downtime Schedule for 2019-2020 Academic Year

The following is a tentative maintenance downtime scheduled for the 2019-2020 academic year.  The majority of downtimes are the first Tuesday of each month but some may be moved to accommodate holidays or  the academic calendar.  


Please note: This schedule can, and likely will change, to respond to vendor software updates, critical security patches released off-schedule, or unplanned problems.  We will update this page as soon as any decisions are made that affect the schedule.


Types of downtimes:

Center-wide – all services at CCR affected

Cluster-wide – all clusters affected but no other services

Cluster-specific – some, but not all, clusters affected but no other services

Cloud – all cloud services affected but no other CCR services


Services to be Updated:

FreeIPA – LDAP & authentication servers

Foreman – Installation servers - clusters affected

DNS – 1-2 times per year; done during center-wide downtimes only

Isilon Storage – 1-2 times per year; center-wide

Arista Networking – once per year; center-wide

GPFS Storage – once per year; cluster-wide

SLURM – all clusters affected; aim to update 4 times/year; dependent on software release schedule

Cloud - affects the CCR research cloud only; no other services affected


Downtime Dates & Tentative Update Plan

6/25/19 - Cluster-wide:   Operating system updates & reboot

7/23/19 - CENTERWIDE:  Details

8/13-14/19  -   CENTERWIDEDetails

8/26/19 - Fall classes Begin

9/24/19  -  Cluster-wide:   Details

10/29/19 -  Cluster-wide:   Details

11/26/19 -  Cluster-wide:   Details

12/6/19 - last day of classes

12/16/19 - last day of final exams

12/17/19 -  Cluster-wide:    Details 

1/21/20 -  Cluster-wide:  Details 

1/27/20 - Spring classes begin

2/25/20 -  Cluster-wideDetails

3/16-21/20 - Spring recess

3/17/20 -  Cluster-wide (moved due to spring recess): Details

4/28/20 -  Cluster-wide

5/8/20 - last day of classes

5/16/20 - last day of exams

5/26/20 -  Cluster-wide

6/30/20 -  Cluster-wide

Summer Downtime Schedule TBD