The new Reliability Monitor feature in Windows Vista and Windows Server 2008 in a nutshell shows you your system stability history at a glance and lets you see details on a day-by-day basis about events that impact reliability.
Reliability Monitor provides a quick view of how stability the system has been. In addition, it tracks events that will help you identify what causes reductions in reliability. By recording not only failures (including memory, hard disk, application, and operating system failures), but also key events regarding the configuration of your system (including the installation of new applications and operating system updates), you can see a timeline of changes in both the system and reliability. The reliability monitor also allows you to identify how to get your system back to optimal reliability when the behavior of the system is not behaving as expected.
You can start the Reliability Monitor by running perfmon.msc from the Run line or add it as an MMC Snap-in. When you launch Perfmon.msc, click Reliability Monitor under Monitoring Tools. The longer a system has been in use the more data is recorded and used to determine the system’s overall health Index value. An important note here: the Reliability Monitor collects 24 hours of data before it calculates the System Stability Index or generates the System Stability Report. Let's now take a look at some scenarios involving the Reliability Monitor:
Windows Vista, Windows Server 2008, WS2008, Troubleshooting, Reliability Monitor