An apparatus includes a nonvolatile semiconductor storage having a semiconductor area and configured to execute erasure processing based on information about a storage area in which unused data is stored in the semiconductor area in a case where the information is received, and a controller having one or more processors which execute instructions stored in one or more memories, the controller being configured to notify the semiconductor storage of the information, cause the semiconductor storage to stop the erasure processing by reception of a signal related to a job while the semiconductor storage is executing the erasure processing, and transmit a response signal for the signal related to the job to the semiconductor storage.