MDW01 - CoreSite Maintenance Notification - CoreSite CH2 - 06/29/2026 to 07/29/2026 - 4:00 AM to 12:00 PM

Scheduled for Jun 29, 04:00 CDT  -  Jul 29, 12:00 CDT

Scheduled

Please be advised of an upcoming scheduled planned maintenance event affecting our MDW01 (Chicago) Data center:

📅 Date: 06/29/2026 – 07/29/2026

⏰ Time: 4:00 AM CST – 12:00 PM CST

📍 Location: MDW01 (Chicago)

🔧 Affected Services: CH2 full site

Risk: Low

Maintenance Type: Scheduled Maintenance

Reason for Work: CH2 4-A-3 (2N) Annual UPS Battery Inspection (Li-Ion Batteries Only)

Risk Mitigation: Trained personnel with approved maintenance procedures will leverage best practices to perform this maintenance item. Back out procedures will be reviewed during pre-maintenance brief.

This Preventative Maintenance will verify the condition of the Lithium-Ion (Li-Ion) battery strings. Per IEEE guidelines, battery maintenance should be performed with the battery string online.

How You’ll Be Notified:

✅ Initial Notification – Sent upon scheduling of the upcoming maintenance work.
✅ 1-Hour Reminder – A reminder notification is sent one hour before the start of the maintenance window.
✅ Start Notification – Issued at the beginning of the maintenance to confirm that the work is underway.
✅ Completion Notification ("All Clear") – Sent once maintenance is complete and all services are confirmed to be operational.

Our team will actively monitor the situation and remain in contact with the CCS Data Center Partner. Should you have any concerns, please reach out:
📧 support@cirrascale.com
Posted Jun 01, 2026 - 16:18 CDT