Configuration of NTP is an often overlooked step in setting up a VMware ESX environment. It is important to keep accurate time not only on the guests but also on the hosts. In the 3.5 release of ESX you can configure NTP from the VI Client, but some older releases require configuration from the Service Console. Here are the steps involved in NTP configuration from the Service Console.
Keeping the time correct on all of the network devices inside your network may seem like a trivial task, but rest assured that during an extended troubleshooting session you’ll be glad that the times match up.