Information
ESXi host must have reliable time synchronization sources. Cryptography, audit logging, cluster operations, and incident response/forensics heavily rely on synchronized time. The recommended practice for NTP is to have at least four sources. It is not advisable to have only two sources, as having one source is preferable to having two. Precision Time Protocol (PTP) is an alternative to NTP that offers sub-millisecond time accuracy. PTP has a different architecture compared to NTP and may not provide the same level of resilience in case of primary server failure. It is suggested to configure NTP as a backup source for PTP, ensuring that a time source remains available even if the accuracy is reduced.
Solution
$ntp0 = "0.vmware.pool.ntp.org"
$ntp1 = "1.vmware.pool.ntp.org"
$ntp2 = "2.vmware.pool.ntp.org"
$ntp3 = "3.vmware.pool.ntp.org"
Add-VMHostNTPServer -NtpServer $ntp0 , $ntp1 , $ntp2 , $ntp3 -VMHost $ESXi -Confirm:$false