Hitachi, Ltd.

Hitachi Vantara Corporation

Yutaro Kobayashi

Hideaki Fukuda

Katsuya Tanaka

Shinichi Kasahara

Yoshikazu Murayama

A storage apparatus includes a plurality of storage controllers. Each of the plurality of storage controllers includes a controller interface for connecting the storage controllers. The controller interface includes one or more logical ports corresponding to each storage controller of the connection destination. When converting the first request of the first protocol used in the storage controller into the second request of the second protocol used in the inter-storage controller network, the controller interface stores the identification information of the first request and the identification information of the second request in the send queue of the logical port.

Storage device and protocol conversion method by storage device

Each storage controller comprises a first storage unit, an interface unit, and a processing unit which sends, to the interface unit, a parameter which instructs n-fold write of writing data in each of n-number of (n is a natural number of 2 or more) other storage controllers. When the interface unit receives the parameter, the interface unit executes each processing of acquiring the data from the first storage unit and storing the data in the second storage unit, generating n-number of requests of writing the data in each of n-number of the other storage controllers, storing each of the generated requests in n-number of the queues corresponding to each of n-number of the other storage controllers, and processing each request stored in each queue and transferring the data stored in the second storage unit to each of n-number of the other storage controllers.

Storage system, data write control method, and non-transitory computer readable medium for storing data write control program

A processor of a storage controller stores a parameter according to a command that has been transferred from a front-end unit to a first area in a first memory area and issues notification to the front-end unit regarding an address of a second area in a second memory area which is mapped to the first area, the front-end unit generates a data packet whose destination is the notified address and stores the generated data packet at the address of the second memory area, and an interface unit reads the parameter stored in the first area in the first memory area which is mapped to the second area of the address based on the destination address stored in a header of the data packet which has been stored in the second memory area and executes processing of the system function according to the command.

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Tokyo, Japan

Yutaro Kobayashi