Computer monitoring systems are used to gather data for the purpose of real-time incident notification, performance analysis, and system health verification. Without such a tool, a system administrator would have to login to each machine to collect information on a regular basis. This kind of repetitive task can be automated using a system monitoring tool. System monitoring can also help identify problems before they escalate to emergency status. This type of software is not only useful for network administrators. Home users with a small network or even just a single computer will benefit from advanced notification provided by system monitoring tools. Knowing that free space on the hard disk is running out, or that a particular server/daemon has gone down can be extremely useful.