Few KB articles which I went through and feel very useful and great. Keeping this for my Future reference. Recreating a missing virtual machine disk (VMDK) descriptor file http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1002511 Unmounting a LUN or Detaching a Datastore/Storage Device from multiple ESXi 5.x hosts http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2004605 Investigating virtual machine file locks on ESXi/ESX http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=10051 Methods of upgrading to…