To provide a mechanism for providing a device monitoring system and the like which recognize situations of each of pieces of facility equipment in detail at a lower cost.
In a monitoring system in which a monitoring server 106, a video-recording server 104, and a management terminal for controlling photography of photography equipment are communicably configured, the video-recording server includes: an index generation means for generating index information for associating images corresponding to event information received from the monitoring server with one another; and an index transfer means for transferring the generated index information to the monitoring server. The monitoring server includes: an information transfer means for transferring the obtained event information to the video-recording server and the management terminal; and a history information storage means for storing history information which includes the obtained event information and the index information received from the video-recording server corresponding to the event information.
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