Abstract: A data processing device, that includes: a first storage device; and a processor configured to execute a procedure. The procedure includes: receiving write data to be written to a second storage device provided at a computer, outputting the write data to the second storage device, and duplicating and outputting the write data; executing control that writes the duplicated write data to the first storage device that is separate from the second storage device; executing virus countermeasure processing related to virus infection, on the write data stored in the first storage device; and in a case where the write data is output while executing the virus countermeasure processing, suspending the virus countermeasure processing and prioritizing execution of the control that writes the duplicated write data to the first storage device.

Abstract: A data processing device, that includes: a first storage device; and a processor configured to execute a procedure. The procedure includes: receiving write data to be written to a second storage device provided at a computer, outputting the write data to the second storage device, and duplicating and outputting the write data; executing control that writes the duplicated write data to the first storage device that is separate from the second storage device; executing virus countermeasure processing related to virus infection, on the write data stored in the first storage device; and in a case where the write data is output while executing the virus countermeasure processing, suspending the virus countermeasure processing and prioritizing execution of the control that writes the duplicated write data to the first storage device.

Abstract: A computer-readable storage medium on which is recorded a content switching program used to direct a device for transmitting a content corresponding to data to a requester in response to a data acquire request from the requester to perform a content switching process, the process comprising: a load acquiring step of acquiring a load on the device; a content selecting step of selecting, on the basis of the acquired load, one of a plurality of contents that can be a content to be transmitted and each of which has a different volume; and a storage location changing step of changing a storage location of the content to be transmitted into a storage location of the selected content.