We would like to inform you of upcoming network maintenance that will affect our infrastructure in Amsterdam, Rotterdam, and The Hague. This work is necessary to address a software bug in the operating system of our transport switches, which—if left unresolved—could lead to performance degradation or service interruptions on our backbone.

An initial maintenance was carried out on March 8 and completed successfully. However, it inadvertently introduced a secondary issue, which we will now be remedying.

Scope of Work:
- Upgrades will be performed sequentially on each transport switch, followed by a reboot to activate the new software.
- Customers with single-homed connections may experience brief service interruptions during the upgrade process.
- The updated software has been thoroughly tested in a lab environment and the procedure will be executed in a controlled manner by our Netrouting network engineering team.

This upgrade is essential to ensure the continued stability, security, and performance of our network. We appreciate your understanding and cooperation during this maintenance window.

Netrouting Network

We would like to inform you of a scheduled maintenance window at our DFDC The Hague data center on Friday, May 30, 2025, starting at 07:00 AM and concluding by 04:00 PM Amsterdam local time (CET).

This maintenance will involve an upgrade to the ATS-B infrastructure and will specifically affect the B feeds to the following busbar rows:

- ZA.C8B
- ZA.C9B
- ZA.C10B

Maintenance Overview
This work has been carefully planned and will be executed in accordance with a detailed Method of Procedure (MOP) reviewed by all relevant stakeholders. Qualified personnel will be on-site to oversee all activities.

Maintenance Schedule (CET)
Time Activity
07:00 AM Shutdown B feeds to ZA.C8, ZA.C9, ZA.C10. Power off UPS-B and ATS-B.
07:30 AM Disconnect low-voltage feed from transformer to ATS-B.
08:00 AM Conduct preliminary checks and start removal of temporary ATS-B.
08:30 AM Begin installation of permanent ATS-B panels.
12:00 PM Connect new ATS-B to transformer and UPS-B.
02:00 PM Conduct preliminary checks and energize ATS-B.
02:30 PM Conduct preliminary checks and energize UPS-B.
03:00 PM Conduct preliminary checks and energize busbars ZA.C8B, ZA.C9B, and ZA.C10B.
03:30 PM Continue monitoring infrastructure.
04:00 PM Close maintenance window.

To ensure operational continuity, ATS-A (Utility, UPS and generator) will continue to energize busbars ZA.C8A, ZA.C9A and ZA.C10A.

On-Site Access & Customer Presence
Access to shared spaces including the loading bay, parking area, and certain common zones will be limited throughout the maintenance window. We kindly ask that customers minimize on-site presence during this time.

If you prefer to have engineers on-site for monitoring or assurance, we will be happy to provide temporary workspace arrangements. Please contact us in advance to coordinate.

Should you have any questions or require further details, please do not hesitate to reach out to our support team.

We appreciate your cooperation and understanding as we continue to improve the resilience and capacity of our infrastructure.

ATS-B - DFDC The Hague

As part of our continued infrastructure upgrades following the April 9 utility power maintenance, we will be performing critical work on Saturday, May 3, 2025. During this window, we will migrate Power Feed A at DFDC The Hague to a newly deployed UPS cluster.

This activity is part of a broader effort to increase power system redundancy and prepare the facility for our upcoming tier-3 design implementation.

No interruption to Feed A is anticipated. However, Feed A will be temporarily unprotected during the migration. Customers with dual power feeds and operating on UPS Cluster B will remain fully protected throughout the maintenance.

Maintenance Schedule (CEST):
07:00 AM – Isolate Power Feed A from current UPS infrastructure [DFDC/Electrical]
08:30 AM – Transition Feed A to new UPS cluster [DFDC/Electrical/Facilities]
09:30 AM – Conduct load verification, battery checks, and confirm system status [DFDC/Electrical]
10:00 AM – Close maintenance window [DFDC]

On-Site Access & Customer Presence:
We recommend minimizing on-site activity during the maintenance period. Customers with a need for on-site engineering support are advised to coordinate with our operations team in advance.

Should you have any questions or specific concerns regarding this maintenance, please feel free to contact our support team.

We appreciate your continued cooperation and understanding as we improve the resiliency and capacity of our critical infrastructure.

DFDC The Hague - UPS-A