Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

From what I understand, the software is free and you just need to register to remove the 60-day limitation. Does this mean I have to register every time I install ESXi on a new machine? Or can I use the same key for different ESXi 4.0 installations?

share|improve this question
up vote 2 down vote accepted

This may have changed since but the last time I registered for keys I was prompted to enter a quantity, so you should be able to obtain what you need without having to repeat the registration.

share|improve this answer

As John mentioned, you can obtain a key for a certain number of activations. Each time you install a new ESXi machine, you activate with the same key.

share|improve this answer
You are on your honour to tell them how many you're using; even if there's no specific limit. – Chris S Apr 15 '10 at 1:00
Sure. I just request a number of activations equivalent to the number of physical hosts on my network. I will probably convert them all eventually, anyway. – Matt Simmons Apr 15 '10 at 1:41

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.