Importance of Time Configuration in ESXi

In addition to having:

  1. Accurate Timestamps within Log messages
  2. Accurate Performance Charts
  3. Correct Start and End times on Tasks & Events
  4. And, for VMs to Synchronize time with

Other reasons for having correct time configured on your ESXi include:

  1. For Triggering Scheduled jobs at correct time
    Though you cannot schedule jobs on ESXi directly. However any jobs triggered by vCenter should get executed at correct time.
  2. For Active Directory Authentication
    ESXi can be a active directory domain member. Hence if there is a time drift (of more than 5 minutes) between the ESXi host and the Kerberos server, then active directory authentications may fail.

Please go through the following URLs, for some of vSphere best practices on time keeping:

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