2024

Status Type Start End Quarter Scope User Impact Reason
Planned Full 12 March 2024 09:00 12 March 2024 17:00 2024_q1 Cirrus No login access
No access to any data on the system
Jobs will not run, and queued jobs will be deleted.
Migration to E1000 including the change in authentication protocol and addition of new file system.

2023

Status Type Start End Quarter Scope User Impact Reason
Completed Partial 18 September 2023 09:00 22 September 2023 11.55 2023_q3 Cirrus No login access
No access to any data on the system
Jobs will continue to run, and queued jobs will be started as usual
The SAFE will be available during the outage but there will be reduced functionality due to the unavailability of the connection to ARCHER2 such as resetting of passwords or new account creation.
Upgrade of network
Completed Full Maintenance 2023-07-25 14:00 2023-07-26 09:20 2023_q3 Cirrus Cirrus will not be available to users. This includes the login nodes, compute nodes and access to the filesystems. We will notify users when Cirrus is returned to service. A fix to the volume issue on the Cirrus CXFS /scratch file system which will be performed by the vendor, HPE.
Planned Scratch filesystem 2023-05-15 16:00 2303-05-19 estimated 2023_q2 Cirrus /scratch The solid-state storage (/scratch) will be unavailable on Cirrus from Monday 15th May at 1600. We expect the disk to be unavailable until Friday 19th May but we will notify users once it is available again.
This means that users will not be able to access any data on the /scratch filesystem during this time.
The maintenance is to improve the resiliency and reliability of the solid-state storage (/scratch) by applying software updates, failover policy implementation and deploying additional packages.
Planned Partial Maintenance 2023-02-07 09:00 2023-02-07 17:00 2023_q1 Cirrus CPU and GPU compute nodes will be unavailable. Login access and access to data will still be available. Essential maintenance to the Cirrus liquid cooling system.

2022

Status Type Start End Quarter Scope User Impact Reason
Planned Full Maintenance 2022-12-07 09:00 2022-12-07 17:00 2022_q4 Cirrus Cirrus will not be available to users. This includes the login nodes, compute nodes and access to the filesystems. We will notify users when it is returned to service. Upgrade to the slurm batch scheduler.
Planned Full Maintenance 2022-02-21 09:00 2022-03-16 17:00 2022_q1 Cirrus There will be a full rebuild of the Cirrus Service. It will be unavailable during maintenance session. Attach new storage storage, bring the system software up to date.

2021

Status Type Start End Quarter Scope User Impact Reason
Planned Outage 2021-12-01 09:00 2021-12-01 17:00 2021_q4 Cirrus Full system will be unavailable during maintenance session. Third-party maintenance on cooling system.
Completed At-Risk 2021-10-27 09:00 2021-10-27 17:00 2021_q4 Cirrus Period of up to 30mins when external connections are not possible. Compute nodes will continue to run jobs. Network upgrade at the Advanced Computing Facility (ACF)