Information processing apparatus that controls shifting between power states in accordance with remaining storage capacity and control method thereof

An information processing apparatus comprising:

• a non-volatile first storage that can shift to a first power state in which at least write processing can be executed and to a second power state in which power consumption is less than in the first power state and write processing cannot be executed;
• a non-volatile second storage that has a higher access speed than the first storage;
• and
• a controller configured to:
• in a case where the remaining storage capacity is not less than or equal to a threshold, not cause the first storage to shift from the second power state to the first power state;
• and
• in a case where the remaining storage capacity is less than or equal to the threshold, cause the first storage to shift from the second power state to the first power state and cause a part of data stored in the second storage to be stored in the first storage that has shifted to the first power state,
• wherein the controller decides, among data stored in the second storage, a data candidate to save to the first storage, while the first storage is in the second power state,
• the controller causes the first storage to shift from the second power state to the first power state when the remaining storage capacity becomes less than or equal to a predetermined threshold, copies the decided save candidate data from the second storage to the first storage, and sets a flag to the save candidate data stored in the second storage when performing the copying of the save candidate data, and
• the controller deletes the data to which the flag is set from the second storage in accordance with reception of a data write request.

A control method of an information processing apparatus that has a non-volatile first storage that can shift to a first power state in which at least write processing can be executed and to a second power state in which power consumption is less than in the first power state and write processing cannot be executed, and a non-volatile second storage that has a higher access speed than the first storage, the method comprising:

• confirming a remaining storage capacity in which data can be stored in the second storage;
• in a case where the remaining storage capacity is not less than or equal to a threshold, not cause the first storage to shift from the second power state to the first power state;
• and
• in a case where the remaining storage capacity is less than or equal to the threshold, not cause the first storage to shift from the second power state to the first power state until receiving a data write request, and in accordance with reception of the data write request, cause the first storage to shift from the second power state to the first power state and cause a part of data stored in the second storage to be stored in the first storage that has shifted to the first power state.