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Article ID: 318545
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Issue/Introduction
This VMware Best Practices Guide addresses configuring ESX/ESXi hosts to update their time from an Network Time Protocol (NTP) server.
ESX/ESXi hosts utilize NTPv4 clients to update time from an authoritative time server within the local environment or from an internet time server.
Symptoms:
Environment
VMware vSphere ESXi 6.0
VMware vSphere ESXi 5.5
VMware vSphere ESXi 6.7
VMware vSphere ESXi 5.0
VMware ESXi 4.0.x Embedded
VMware ESXi 4.1.x Embedded
VMware ESX 4.0.x
VMware ESXi 4.1.x Installable
VMware vSphere ESXi 6.5
VMware ESXi 4.0.x Installable
VMware vSphere ESXi 5.1
VMware ESX 4.1.x
Resolution
VMware considers it best practice to have your ESX/ESXi hosts configured to an authoritative time (NTP) server. The authoritative time server could be a Microsoft Active Directory Server or Internet time server.
To configure your ESX/ESXi host to a Microsoft Active Directory Server for NTP, see
Synchronizing ESXi/ESX time with a Microsoft Domain Controller (1035833).
For the list of NTP Pool Servers, visit one of the following Web sites: