We have just updated to VMware version 6.0 Update 2 and one of the ESXi host datastores is VMFS3 which is no longer supported in VMware 6.0. Please reference: https://www.experts-exchange.com/questions/28972756/Deprecated-VMFS-Volume-s-found-on-host-Please-consider-upgrading-volumes-s-to-the-latest-version.html
I have never updated a DataStore format before and I do not have a test environment to try different things out. So I wanted to ask the experts before I do anyuthing and hopefully not screw up the ESXi host in the process.
I have heard that it is an very involved process and then I have read it is not a very involved process. My questions are below:
1. May I 'Upgrade to VMFS-5' right from the Vsphere client while the Virtual Machines are still on?
a. or will I need to power off any Virtual Servers that reside in that DataStore?
2. What are the dangers of changing the VMFS version from 3 to 5 on the datastore?
a. Should I move all of the VM's off that DataStore before I upgrade it?