Hi,

It was quick. Less than 20 seconds.

The disks are not taking up the whole assigned space, so they aren't fully encrypted.

The vTPM article explains it then, but it doesn't explain why this happened severals days after adding the vTPM line to the vmx file. I had rebooted and shut down the VM several times since, but all of a sudden today it did the encryption.

Thanks for the link to the article, now I know what I have to pay attention to going forward