This one seems like an obvious one, but I will post it anyways. Chances are that you have deployed and/or maintain Windows 2003 Small Business Server. Many small businesses purchased SBS during “the good times” of 2003-2008.
Due to the licensing restrictions imposed on the product by Microsoft, these servers are always one boxed. That is to say that they have too many servers and services on the same hardware. Most of these systems are reaching their end of life and are running slower than ever.
These 32bit boxes are usually maxed on RAM (4GB) and are starving for more. Lately I have been auditing the list of installed applications and removing as needed. The memory hog is usually some SQL server running even though it isn’t in use. Take into account Backup Exec, WSUS, SBS Monitoring, and Sharepoint and you begin to see where all that RAM is going. Almost all of my clients have been moved over to a managed services platform which handles Windows Updates and system monitoring. That takes out two standard SQL databases/instances right off the bat.
So the long story short is this: Reevaluate the needs of your aging servers and get more from them by removing obsolete tools.