Planned Maintenance

Please see below for current and upcoming scheduled maintenance which may impact users of BriCS services and facilities.

If you are concerned about the impact of upcoming maintenance, or encounter unexpected issues you suspect are related to a maintenance event, please get in touch with the BriCS team.

Date and Time	Description	Services Affected	Expected Impact	Notes
2025-07-23 09:00-17:00 UTC+1	At risk period for core network upgrade work to improve resilience and enable expansion of capacity	Isambard-AI Phase 1 and 2, Isambard 3	External network connectivity for Isambard-AI Phase 1 and 2, and Isambard 3 will be at risk of disruption during this period. Brief interruptions to connectivity may occur.	If you experience connectivity issues during an SSH session, please disconnect and reconnect. Internal networking for the clusters will not be affected.
2025-07-23 10:00-12:00 UTC+1	Network outage for core network upgrade work to improve resilience and enable expansion of capacity	Isambard-AI Phase 1 and 2, Isambard 3	Network outage causing loss of connectivity for Isambard-AI Phase 1 and 2, and Isambard 3 to external networks	During the outage scheduled jobs will continue to run, but the login nodes will not be accessible. Running jobs will be unable to reach the internet. Internal networking for the clusters will not be affected.
2025-07-28 09:00-17:00 UTC+1	Isambard 3 outage to allow upgrade of Lustre filesystem appliance	Isambard 3 (including MACS)	Access to Isambard 3 (including MACS) will be disabled for the duration of the upgrade. This means no SSH access, and no jobs will run.