The invention relates to a sensor system. The sensor system comprises sensor devices. The sensor devices are configured for exchanging data via a network connection. Each of the sensor devices is configured to measure sensor data wherein each of the sensor devices comprises a local processor and a local memory coupled to the local processor. Each local memory comprises a local data repository. The local memory comprises local instructions which, when executed by the local processor, cause the local processor to: repeatedly store the sensor data in the local data repository as a data file, wherein each data file stored has a unique name; and repeatedly synchronize with the local data repository of the other of the sensor devices, wherein each local data repository maintains a complete copy of the data file of each of the sensor devices after synchronization.