Reading Time: 4 minutes In a vSphere 5 upgrade path, the vSphere part of the upgrade process is the simples part and the order is the same of previous upgrade: first the vCenter Server (that can handle new and old hosts), then VUM (if you want to use it to upgrade the hosts), then the hosts, then the VMware Tools of the VMs and finally, if needed the VMFS5 of the datastores and the virtual hardware of the VMs. vCenter Server The upgrade of the vCenter Server is really simple and if you start from a version 4.1 you […]