I recently was working in an environment where they are still running vSphere 6.0. While doing some storage expansions I discovered that the Flash Client and the C# Client were not reporting the same size on the Datastore. This can be very frustrating as you are not sure which one you can trust. So as a tie breaker I decided to turn to my good friend PowerCLI.
It turns out that the PowerCLI and the C# client were reporting the same thing. So I decided to create a PowerCLI Script to assist me in my work. You can find the script there on my Github:
https://github.com/kenbshinn/PowerCLI-Scripts/blob/master/VM_Datastore_Report.ps1
I hope you found this post helpful and will share it with your friends.