The present invention provides an electronic system having a power-condition-aware hybrid storage device and a method for the operation of the hybrid storage device in the electronic system. The electronic system comprises: a host and a hybrid storage device. The host comprises a detecting unit, and the detecting unit is utilized for detecting a power condition of the host to generate a first detecting result and detecting an operation condition of the host to generate a second detecting result. The hybrid storage device comprises: a plurality of non-volatile memory units, a hard drive unit, and a control unit. The control unit is utilized for receiving the first detecting result and the second detecting result from the detecting unit in the host and determining whether to turn on the hard drive unit according to the first detecting result and the second detecting result.
