dsi is Information Recorder and it is a part of Network Manager. dsi prints data received as its input parameters in the predefined format to specified files or on stdout. Typical sources of these data are SNMP notifications received by Notification Manager and processed by other programs of that subsystem (i.e. des or dtrapd). Another source can be Operation Manager. If dsi is run with -A option, it asks the server of graphic notifications to display a notification for an operator. If the server can display a notification, it returns an operator identifier and its reaction time. That information is also saved. If no file is specified or the data cannot be saved in any of specified files, the output is printed on stdout. dsi is also designed to service (displaying and recording) cases created by Operation Manager.