What is the default encrypted vSphere vMotion state for virtual machines that are not encrypted?

The default encrypted vSphere vMotion state for virtual machines that are not encrypted is opportunistic. This means that when you initiate vMotion for a non-encrypted virtual machine, vSphere will attempt to use encryption for the migration process if the underlying infrastructure supports it. If the features and configurations are in place for encrypted vMotion, the migration can happen securely. Otherwise, the transition will proceed without encryption.

This approach provides flexibility by allowing both encrypted and non-encrypted virtual machines to coexist and be migrated as needed, taking advantage of encrypted vMotion when available. It minimizes the need for manual intervention and ensures that security is prioritized without hindering operational capabilities.