Hi all, i am now with a company with a ESXi environment, and 2 VMs located on a Lenovo PX400 SAN. There is a fair bit of maintenance that needs to get done as it has been neglected for some time. My question is, how should i go about testing updates and changes before deployment? I have heard varying opinions on the topic, but im thinking clones of the virtual servers that i can bring up and down at will to apply updates and then test? I could use some guidance here!!