Patent ID: 7266730

Claim:
An information system, comprising: a server; a data storage device, accessed by said server by issuing an input/output request in order to write information or to read said written information; and a connection device connected to said server and to said data storage device, including a transmission/reception unit to mediate information exchanged between said server and said data storage device, which transfers said input/output request transmitted from said server to said data storage device, and transfers information transmitted by said data storage device in response to said input/output request to said server, wherein said connection device further includes: a memory unit for storing in advance a test list which associates information identifying said data storage device to be tested with setting information related to tests; and an input/output analysis unit, connected to said transmission/reception unit and to said memory unit, which, upon input of said input/output request received by said transmission/reception unit, references said test list and judges whether the destination of the input/output request is said data storage device to be tested, and if the destination of the input/output request is said storage device to be tested, outputs the input/output request to said transmission/reception unit after a prescribed length of time has elapsed.