Patent ID: 7383444

Claim:
An information processing system comprising: an information processing apparatus; a plurality of disk devices; a disk array device accommodating said disk devices and removably mounted in said information processing apparatus; a cover device that covers said disk array device; and a control device, wherein said disk array device comprises a storage device that stores authentication information for use in authentication by said information processing apparatus, wherein said information processing apparatus comprises an acquiring device that acquires the authentication information and opening and closing history in which at least one of opening or closing of said cover device is recorded from said storage device, an authenticating device that performs a process for authenticating said disk array device by using the authentication information acquired by said acquiring device, and a reading device that reads out information from at least one of said disk devices, wherein said reading device reads out the information from at least one of said disk devices when authentication by said authenticating device is successful, and wherein said control device prevents said reading device from reading out the information from at least one of said disk devices when the at least one of opening or closing of said cover device is recorded in the opening and closing history.