So during my first data center virtualization project, I had to write up a series of documents for internal reference. These documents were to help us perform a standard installation at each site we migrate. I thought it would be helpful to post them for anyone else looking to perform these tasks, as well. This series of posts is about VMware Update Manager 4.1U1 and its associated Update Manager Download Service. It appears in three posts because the topic can be logically separated into three steps: installing and configuring VUM, installing and configuring UMDS, and a patching guide once your initial update infrastructure is in place. This post, as you can see, is part I. Let me know if it helps you out or if I missed something. All the best!