Abstract: There is provided a storage apparatus capable of reducing command processing time, a control method of the storage apparatus, and a control apparatus thereof. A storage apparatus is capable of receiving a write request from an external device, comprising: an FMT position counter 51 that measures a first measurement value concerning the head position on a track of a recording medium; a data reception counter 41 that measures a second measurement value concerning the received data amount of write request data which is data included in the write request from the external device, and a sequential controller 52 that controls data writing operation for the track based on the first and second measurement values measured respectively by the FMT position counter 51 and data reception counter 41.

Abstract: A magnetic disk apparatus comprises a failure prediction condition detection unit and a failure prediction time operation logic unit. The failure prediction condition detection unit notifies the failure prediction time operation logic unit when detecting an establishment of a failure prediction condition. Having received the notification, the failure prediction time operation logic unit instructs to execute a failure prediction-time operation which is predetermined corresponding to a failure prediction condition. The failure prediction-time operation includes an operation for trying to return to a normal state and/or protecting data.