NTP on ESX

I use this document so much that I figured I would post a link to it. I always seem to have issues with my ESX servers losing their time sync via NTP. Here is how to set it up correctly (it will still break) and how to fix it.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1339