Using the Best Practices Analyzer
A best practice is a way of doing things that is considered by others (generally more experienced in the area) to provide the best result. For example, a best practice is to always have at least two domain controllers in case one goes down.
Following a best practice can both solve existing issues and avoid future ones, but a bit of common sense is needed to ensure that you are following the advice that is relevant for you and your organization. In a small test lab of a few VMs, having a second DC may not be needed.
The BPA is an automated tool that's built into Windows. With BPA, a best practice model is a set of specific guidelines for a single area. BPA reviews your infrastructure and points out areas where the environment is not compliant with the best practice model.
The Windows BPA framework provides PowerShell support for managing the BPA process. Windows and applications come with a number of BPA models, generally built by the relevant product...