Affected Components: Core Routers, region FES

Scheduled Start: 13. Jan. 2026/9:00 pm

Scheduled End: 14. Jan. 2026/02:00 am

State: SCHEDULED

Description:

In order to ensure the greatest possible stability and availability of our network, we will be carrying out maintenance work on our routers at the FES location during a maintenance window from 21:00 CET on Tuesday, 13 January 2026 until 02:00 CET on Wednesday, 14 January 2026. During the execution of the work, an increased latency time is to be expected over the period of the maintenance window.

Customer Impact during the Maintenance:

• FES: reduced latency

Customer Actions:

• No customer actions needed
• Please inform us if you notice any irregularities

Affected Components: SysEleven OpenStack Cloud Networking in region DUS2

Scheduled Start: 14 Jan 2026, 22:00 CET

Scheduled End: 14 Jan 2026, 23:00 CET

State: SCHEDULED

Description:

We will perform maintenance on networking gateways.

Customer Impact during the Maintenance:

• Several short interruptions of external network connectivity up to 10 seconds each
• VPN connections could be interrupted for up to 10 seconds

Customer Actions:

• no customer actions needed
• please inform us if you notice any irregularities

Affected Components: SysEleven OpenStack Cloud in region DUS2

Scheduled Start: 20 Jan 2026, 22:00 CET

Scheduled End: 21 Jan 2026, 02:00 CET

State: SCHEDULED

Description:

We will perform an update of the OpenStack Compute service. During this update, all OpenStack API services in the region will be unavailable.

Customer Impact during the Maintenance:

• OpenStack API services in region DUS2 will be unavailable (loss of control)
• Running VMs will not be affected
• Object storage will not be affected

Customer Actions:

• No customer actions needed
• Please inform us if you notice any irregularities

Affected Components: SysEleven OpenStack Cloud in region HAM1

Scheduled Start: 27 Jan 2026, 22:00 CET

Scheduled End: 28 Jan 2026, 02:00 CET

State: SCHEDULED

Description:

We will perform an update of the OpenStack Compute service. During this update, all OpenStack API services in the region will be unavailable.

Customer Impact during the Maintenance:

• OpenStack API services in region HAM1 will be unavailable (loss of control)
• Running VMs will not be affected
• Object storage will not be affected

Customer Actions:

• No customer actions needed
• Please inform us if you notice any irregularities