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
2026-04-21 @ 10:00 to 2026-04-22 @ 16:00 BST	Scheduled maintenance of cooling distribution units (CDUs)	Isambard-AI Phase 2	One quarter of the system will be powered down at a time, with one quarter taken offline each morning and afternoon across both days. The remaining three quarters of the system will continue to operate as normal throughout the maintenance window. Job scheduling for long jobs may take longer than usual in the lead-up to and during maintenance. Access to the login nodes will be unaffected.	To minimise disruption, please request only the walltime your job actually needs, as this will allow backfilling to be more effective.