Normal operating schedule
All services normally run with operations staff present (attended operation), subject to the holidays and vulnerable periods shown below, as follows:
| Monday to Friday | 08:00–17:00 |
At other times they run with no operations staff present (unattended operation).
Vulnerable periods
The following periods are designated as vulnerable. During these periods, services may be interrupted for maintenance or other dedicated work.
| Desktop Services*, DS-Print Scheduled Downtime, Hermes* , Jackdaw*, Falcon*, Managed Web Service*, Lookup* | Monday to Friday | 07:30–09:00 [1] | 17:00–19:00 [1] |
| Saturday, Sunday | Sat 00:00 to Mon 08:00 | ||
| CUDN* | Monday to Saturday | 07:30–09:00 [1] | 17:00–19:00 [1], [2] |
| Sunday | 00:00 to Mon 08:00 | ||
| JANET* | Tuesday | 07:00–09:00 | |
| HR Systems, Student Systems, Moodle, CamTools | Tuesday and Thursday | 07:00–09:00 | |
| Finance System | Tuesday and Thursday | 06:00–09:00 | |
| High Performance Computing* | Tuesday | 10:00–18:00 | |
*Announcements about when these services are likely to be disrupted during vulnerable periods are made 24 hours in advance (or, for deferred emergency maintenance, by 15:00 the preceding period) in UIS News (which is syndicated on the UIS Website homepage) and, where possible, on the appropriate systems.
Notes:
08:45–09.00 and 17:00–17:15 are avoided when possible.
17:00–19:00 is not normally used for non-urgent work that might disrupt a significant part of the CUDN.
Holidays
UIS is closed on bank holidays. In addition, UIS will close at 17:00 on Friday 21 December 2018 for the Christmas/New Year holiday and re-open at 08:30 on Wednesday 2 January 2019.
Unattended operation
When a service is running unattended, if it should fail, the service might not be reinstated until the next period of attended operation. In practice, staff monitor services from time to time outside normal working hours and are often able to reinstate them, but this can not be relied upon.
