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• Maintenance content: Update kernel configuration on the server to resolve driver conflict issues.


• General impact: Cloud GPU services will be interrupted during the maintenance period.


• Detailed service impact: Cloud Server GPU: Virtual machines will be shut down.

Service Impact: Cloud Server GPU

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The system has recorded an incident affecting Cloud services at CMC Datacenter. vHost is currently investigating and handling the issue.

Incident Update #1:

Based on preliminary checks, the server is still operational. We have identified the root cause as a network-related issue, which led to this situation. Our technical team is actively working to resolve the issue.

Incident Update #2:

vHost has temporarily resolved the issue, and VPS and Cloud Server services at CMC Datacenter are now accessible.
Preliminary Cause: Network interruption on GPU02 server
Temporary Solution: Server reboot
Currently, vHost’s engineering team is urgently identifying the root cause and will implement a permanent fix. We will provide the latest updates to our valued customers as soon as more information becomes available.
Incident Details

• Incident Time: 13:21, January 29, 2026 (GMT +7:00, Vietnam Time)

• Resolution Time: 14:30, January 29, 2026 (GMT +7:00, Vietnam Time)

Incident Update #3:

vHost has resolved the incident.
• Root cause: A conflict between IOMMU and the network card driver caused a complete network outage for all running services.
• Preventive solution: vHost performed maintenance to update the IOMMU configuration, excluding the network card driver to prevent conflicts.

Thank you for your understanding.
Best regards,

Services: Cloud

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• Maintenance Scope: Firmware upgrade for the router devices at the FPT DataCenter.


• General Impact: Traffic will reroute to another router during maintenance. The maximum network disruption duration is up to 5 minutes.