Impacts for projects not migrating to Cirrus EX4000

Important

This information was last updated on 20 Nov 2025

This page summarises the impacts on users and projects who are not migrating to Cirrus EX4000 on 8 December 2025. It also highlights any actions you need to take.

Tip

If you are unsure whether or not your project is migrating to Cirrus EX4000, see the information on the account migration page.

Data access

Projects and user accounts that are not migrating to Cirrus EX4000 will lose access to any data on Cirrus from 08:00 GMT on Monday 8 December 2025.

Users and projects should copy any data they wish to keep off Cirrus before 08:00 on Monday 8 December 2025.

Getting access to Cirrus EX4000

If projects want to access Cirrus EX4000 for their research, there are a number of different access routes. Please consult the Access page on the Cirrus website for details on how to do this.