Patent ID: 8423741

Claim:
A storage control device which collects data outputted from a plurality of measurement targets and stores the collected data in a storage medium, comprising: a control part that makes a write request of the collected data to the storage medium; and a storage medium management part that manages a data amount stored in the storage medium, wherein the storage medium management part comprises a stored data amount adjustment part that: stores a maximum data amount which the storage medium can store at a time of startup of the storage control device, and a first stored data amount which is an initial stored amount of a stored data, in a data amount storage part; upon receiving a write amount of a data in response to a write request, writes a new stored data amount, as a second stored data amount, calculated by adding the write amount to the first already-recorded stored data amount, over the first already-recorded stored data amount; calculates a free space by subtracting the second stored data amount from the maximum data amount; determines a data deletion amount if the free space does not take a value not less than a prescribed value; and writes a third stored data amount calculated by subtracting the deletion amount from the second stored data amount, over the second stored data amount, and a storage medium control part that: upon receiving the deletion amount, identifies a data stored in the storage medium and corresponding to the deletion amount; instructs a deletion of the data; and stores the data corresponding to the write request, in the storage medium.