Controller, storage apparatus, method of testing storage apparatus, and computer-readable storage medium

A storage apparatus, comprises:

• a first storage medium;
• a second storage medium;
• and
• a controller comprising:
• an address generator that sets a plurality of different paths, each connecting an information processing apparatus connected to a storage apparatus via a network, the first and second storage mediums, and the controller, and generates a second address that is different from a first address used for a communication with the information processing apparatus via the network;
• an access monitor that determines that no access has been issued for a certain time duration from the information processing apparatus to the first or second storage medium;
• an access issuing unit that issues, in response to the access monitor determining that no access has been issued for the certain time duration from the information processing apparatus, a test access to the first and second storage mediums on one of the plurality of paths, using the second address;
• and
• an access decoder that converts the test access to an access including the first address, receives a result of the access including the first address from the one of the first and second storage mediums, and checks for an error,
• wherein the first controller controls the first storage medium, and controls the second controller upon a failure of the second controller,
• the second controller controls the second storage medium, and controls the first controller upon a failure of the first controller,
• wherein the access issuing unit issues the test access preferentially on one of the plurality of different paths, based on a history of usage of the storage apparatus.

A method of testing a storage apparatus, comprising:

• setting a plurality of different paths, each connecting an information processing apparatus connected to a storage apparatus via a network, first and second storage mediums, and a controller, and generating a second address that is different from a first address used for a communication with the information processing apparatus via the network;
• determining that no access has been issued for a certain time duration from the information processing apparatus to the first or second storage medium;
• issuing, in response to determining that no access has been issued for the certain time duration from the information processing apparatus, a test access to the first and second storage mediums on one of the plurality of paths, using the second address;
• and
• converting the test access to an access including the first address, receiving a result of the access including the first address from the one of the first and second storage mediums, and checking for an error,
• wherein the issuing comprises issuing the test access preferentially on one of the plurality of different paths, based on a history of usage of the storage apparatus.

A non-transitory tangible computer-readable storage medium, storing a test program for a storage apparatus, when executed by the computer, the test program making the computer:

• set a plurality of different paths, each connecting an information processing apparatus connected to a storage apparatus via a network, first and second storage mediums, and a controller, and generate a second address that is different from a first address used for a communication with the information processing apparatus via the network;
• determine that no access has been issued for a certain time duration from the information processing apparatus to the first or second storage medium;
• issue, in response to determining that no access has been issued for the certain time duration from the information processing apparatus, a test access to the first and second storage mediums on one of the plurality of paths, using the second address;
• and
• convert the test access to an access including the first address, receive a result of the access including the first address from the one of the first and second storage mediums, and check for an error,
• wherein the test program makes the computer issue the test access preferentially on one of the plurality of different paths, based on a history of usage of the storage apparatus.