Software patches are, unfortunately, a fact of life in today's IT departments. Most organizations recognize that it is impossible to create 100 percent error-free code and that software patches will be necessary to correct problems or flaws or to add new features. Fortunately, VMware offers a tool to help automate this process for vSphere. This tool is called vCenter Update Manager (VUM).
In this chapter, you will learn to:
Install VUM and integrate it with the vSphere Client
Determine which ESX/ESXi hosts or virtual machines need to be patched or upgraded
Use VUM to upgrade virtual machine hardware or VMware Tools
Apply patches to ESX/ESXi hosts
Apply patches to Windows guests