This is tricky, because there are a ton of questions with only the [tag:vmware] tag -- **1,090** as of the time I originally wrote this.

Note the sidebar where it says "related tags", pay close attention to this Related Tags sidebar:

- vmware-esx × 146 
- virtualization × 144 
- vmware-esxi × 111 
- linux × 74 
- networking × 63 
- windows × 59 

As for the idea of "rename the tag if the text contains x", I **downloaded a copy of the server fault database and ran some queries**:

- questions with only the [tag:vmware] tag, and no other [tag:vmware-] related tags: **725**
- of the above, with the string "esx" or "esxi" in the body or title: **22**

That leaves **~700 questions (!)** needing manual retagging. That's .. a lot. Really a lot.