The chapter explores hardware monitoring. It is essential in providing the best availability possible. There are a couple of vendors who publish management packs at the Microsoft site, including The HP management pack that supports the Hewlett-Packard (HP) Integrity and HP ProLiant series servers, and the Dell Management Pack that supports the PowerEdge series server. The implementation of these management packs depends on the installation of the vendor-supplied management software. The chapter explains monitoring of Intel-based hardware. Using hardware monitoring, one can discover hardware failures that otherwise would not show up in the Microsoft Operations Manager (MOM) Operator console. An example of this would be the failing of a single disk in a hardware RAID.