Now, if you are like one of the hundreds of vSphere administrators with whom I have interacted over the past years, you are probably unaware of the fact that, even when the “Synchronize clock with ESXi host” option is disabled (unchecked) on the VMware Tools properties of the virtual machine, the virtual machine will still occasionally synchronize its clock with the ESXi host. Even VMware got religious and stopped making that option the default behavior. Until everyone got wiser and the message went out to every admin far and wide that such configurations was no longer kosher. It was actually the default configuration option on the ESX platform in those days. That used to be “the thing to do” way back when. Take the case of the old practice of synchronizing a virtual machine’s clock with its host’s clock in a vSphere environment. It is, therefore, very comforting when one finds a problematic administrative practice that has not just been universally abandoned by administrators, but is also on the top of any junior administrator’s “configurations sure to get you dis-invited from the next user group meetup” list. Some administrative practices, like a bad habit, have more lives than the proverbial cat – they tend to stay around forever.
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