Development and progress of informational technologies, increases complexity of business and support systems in enterprises. Errors in operation, can cause great risks and potential business losses. There is a need for applications which monitors critical strategic systems. The thesis discusses concepts of HP Operations Manager monitoring software. It describes development process of Smart Plugin for HP Operations Manager, which extends monitoring capabilities to custom made application for managing disk storage systems. Development includes implementation of data collection agent which gathers information from monitored system and HP Operations Manager configuration used for sending messages to operator. Operator has an overview of system's current state and detects, prevents and solves problems using appropriate tools and corrective actions.