A data storage device includes a memory including a first region that stores an application executed by a host, a second region that stores user data, and a meta region, as well as a storage controller configured to control an operation of the memory. The controller may issue a stroke lack warning based on the operating stroke and a preset critical stroke. Then, a weight factor is determined based upon the local gradient. The suspension system may be configured to absorb shock encountered in motorcycles having extreme rake. This is achieved in that the inverter comprises, in the intermediate circuit, a buffer capacitor that is connected to the generator through a protection diode so that said buffer capacitor will not be discharged upon actuation of the short-circuit switch element, the generator working according to a clock rate in the short-circuit mode of operation.