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This paper presents a new cooperative storage system for sensor networks geared for disconnected operation (where sensor nodes do not have a connected path to a base-station). The goal of the system is to maximize its data storage capacity by appropriately distributing storage utilization and opportunistically of loading data to external devices when possible. The system is motivated by the observation that a large category of sensor network applications, such as environmental data logging, does not require real-time data access. Such networks generally operate in a disconnected mode.
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