Abstract: To efficiently detect a defect and identify a causal portion of the defect while minimizing impact on performance of a storage system. A storage device, including an optical module, receives a data I/O request transmitted from another device via the optical module, and performs I/O processing responding to the data I/O request to a storage unit. The storage device performs, upon receiving a data write request as the data I/O request from another device, transmitting a reception enabled notification being information indicating a state where reception of write data for the data write request is enabled to another device, and starting timing of a write monitoring timer being a timer to monitor a reception state of the write data, and upon timeout of the write monitoring timer, acquiring emitted light quantity of a light emitting element, and outputting information indicating the acquired emitted light quantity.

Abstract: Proposed are a storage system and its control method capable of dealing with the unique problems that arise when using a nonvolatile memory as the memory device while effectively preventing performance deterioration. This storage system is provided with a plurality of memory modules having one or more nonvolatile memory chips, and a controller for controlling the reading and writing of data from and in each memory module. The memory module decides the nonvolatile memory chip to become a copy destination of data stored in the nonvolatile memory when a failure occurs in the nonvolatile memory chip of a self memory module, and copies the data stored in the failed nonvolatile memory chip to the nonvolatile memory chip decided as the copy destination.

Abstract: A controller is able to specify one of multiple protocols, and to operate a network interface using the specified protocol. A storage apparatus comprises a network interface part, which is coupled to a computer via a network, and a controller, which is coupled to the network interface part, receives a request from the computer via the network and the network interface part, and accesses a storage medium on the basis of the request. The controller specifies one protocol from among multiple protocols, and sends protocol information denoting the specified protocol to the network interface part. The network interface part configures a protocol denoted by the protocol information, and carries out communications with the network in accordance with the configured protocol.

Abstract: A protocol chip and a communication conversion circuit are provided in a channel adapter package that is in charge of communications with a host. The communication conversion circuit communicates with the protocol chip using a procedure that conforms to a communication protocol. The communication conversion circuit communicates with a microprocessor using a procedure that is common to multiple communication protocols. It appears from the microprocessor as though communications are being carried out with the same type of channel adapter package.

Abstract: Proposed are a storage system and its control method capable of dealing with the unique problems that arise when using a nonvolatile memory as the memory device while effectively preventing performance deterioration. This storage system is provided with a plurality of memory modules having one or more nonvolatile memory chips, and a controller for controlling the reading and writing of data from and in each memory module. The memory module decides the nonvolatile memory chip to become a copy destination of data stored in the nonvolatile memory when a failure occurs in the nonvolatile memory chip of a self memory module, and copies the data stored in the failed nonvolatile memory chip to the nonvolatile memory chip decided as the copy destination.

Abstract: A protocol chip and a communication conversion circuit are provided in a channel adapter package that is in charge of communications with a host. The communication conversion circuit communicates with the protocol chip using a procedure that conforms to a communication protocol. The communication conversion circuit communicates with a microprocessor using a procedure that is common to multiple communication protocols. It appears from the microprocessor as though communications are being carried out with the same type of channel adapter package.

Abstract: Proposed are a storage system and its control method capable of dealing with the unique problems that arise when using a nonvolatile memory as the memory device while effectively preventing performance deterioration. This storage system is provided with a plurality of memory modules having one or more nonvolatile memory chips, and a controller for controlling the reading and writing of data from and in each memory module. The memory module decides the nonvolatile memory chip to become a copy destination of data stored in the nonvolatile memory when a failure occurs in the nonvolatile memory chip of a self memory module, and copies the data stored in the failed nonvolatile memory chip to the nonvolatile memory chip decided as the copy destination.

Abstract: A storage control apparatus capable of reducing a power consumption in network port units, including a host communication control unit 10 which includes a plurality of network ports 18 and which controls communications with a host computer 2 that is connectable through the network ports, a storage-device communication control unit 16 which controls communications with a plurality of storage devices, a plurality of DMA portions 111 by which data to be transmitted/received between the host computer and the storage devices are transferred between the host communication control unit 10 and the storage-device communication control unit 16, a plurality of cache memories 12 in which the data to be transferred by the DMA portions 111 are temporarily stored, and a power saving control portion 110 which stops the DMA portion 111 and the cache memory 12 that are previously associated with one network port, on the basis of a connection situation of the pertinent network port with the host computer and a data rate to be i

Abstract: A storage control apparatus capable of reducing a power consumption in network port units, including a host communication control unit 10 which includes a plurality of network ports 18 and which controls communications with a host computer 2 that is connectable through the network ports, a storage-device communication control unit 16 which controls communications with a plurality of storage devices, a plurality of DMA portions 111 by which data to be transmitted/received between the host computer and the storage devices are transferred between the host communication control unit 10 and the storage-device communication control unit 16, a plurality of cache memories 12 in which the data to be transferred by the DMA portions 111 are temporarily stored, and a power saving control portion 110 which stops the DMA portion 111 and the cache memory 12 that are previously associated with one network port, on the basis of a connection situation of the pertinent network port with the host computer and a data rate to be i

Abstract: Proposed are a storage system and its control method capable of dealing with the unique problems that arise when using a nonvolatile memory as the memory device while effectively preventing performance deterioration. This storage system is provided with a plurality of memory modules having one or more nonvolatile memory chips, and a controller for controlling the reading and writing of data from and in each memory module. The memory module decides the nonvolatile memory chip to become a copy destination of data stored in the nonvolatile memory when a failure occurs in the nonvolatile memory chip of a self memory module, and copies the data stored in the failed nonvolatile memory chip to the nonvolatile memory chip decided as the copy destination.