| 摘要 |
The application discloses a data storage device including one or more data storage media adapted to store data. The data storage device is connected to and powered by a power source of the host system. In the event of a loss of power from the host system, an auxiliary power source is used to power components of the data storage device. For example, an illustrative auxiliary power source uses back electromotive force EMF from a spindle motor of the data storage device. As disclosed, the device includes test circuitry to test a capacity of the auxiliary power source to store data in the event of the loss of power from the host system. |
