Modifying the following configurations for a VMC on AWS SDDC:
The Subnet associated with the Connected VPC (Single or Multi-AZ).
The AWS Account of the SDDC to a new AWS Account (requires a different VPC and subnet).
VMware Cloud on AWS
Once an SDDC is deployed, you cannot change the AWS Connected VPC subnet or the AWS Account associated with it from the VMware Cloud Console. You will need to open a ticket with the VMC on AWS Global Support team to assist with this request.
Notes:
This is a disruptive change and would impact any VM (Management or Workload) that utilises the Connected VPC network path to access native AWS resources inside the Connected VPC (e.g. Amazon RDS, EC2 instances, or S3 endpoints routed through the ENI).
Local SDDC Traffic should remain unaffected. Workload VMs talking to other workload VMs within the SDDC, and local management infrastructure (like vCenter or NSX Manager interacting within the cluster), would continue to function normally.