A data storage device (10) is provided, comprising a control module (100) a first storage module (110) a second storage module (120) a third storage module (125) and a buffer (130). The first storage module (110) is configured to store a plurality of data sets. The control module (100) is configured to receive requests for operations to be carried out on the plurality of data sets in the first storage module (110), to execute the received requests and to copy the plurality of data sets in the first storage module (120) to the second storage module (120) at a predetermined time. The control module is further configured to add the received requests for operations to the buffer (130) and to persist the buffer (130) to the third storage module (125) by a synchronization means. The data storage device is configured to initialize the plurality of data sets in the first storage module (110) from the second storage module (120) and to carry out operations corresponding to the requests from the third storage module (125) in a recovery scenario.
