Time synchronization in your network should always be configured, but sometimes users underestimate its importance because they believe that having the network time-synced is not that important. It is, however, critical. If the ESXi hosts are not in sync, you might face some communication issues between vSphere components that could cause a service outage. If you use AD in your network, for example, the Domain Controllers (DCs) and clients must be time-synced to avoid authentication problems. If the time between the DCs and clients differs by more than five minutes, Kerberos tickets will fail, and you will not be able to log in. By default, machines joined to a domain will contact the DC that holds ...
Configuring the Network Time Protocol (NTP)
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