Abstract: To provide stable processing performance and perform an appropriate failure processing in a storage device. A storage device includes a plurality of controllers; a plurality of storage drives; and a switch device including a plurality of controller-side ports respectively connected to the plurality of controllers and a plurality of drive-side ports respectively connected to the plurality of storage drives. The switch device performs address translations between the plurality of controller-side ports and the plurality of drive-side ports.

Abstract: To provide stable processing performance and perform an appropriate failure processing in a storage device. A storage device includes a plurality of controllers; a plurality of storage drives; and a switch device including a plurality of controller-side ports respectively connected to the plurality of controllers and a plurality of drive-side ports respectively connected to the plurality of storage drives. The switch device performs address translations between the plurality of controller-side ports and the plurality of drive-side ports.

Abstract: To provide stable processing performance and perform an appropriate failure processing in a storage device. A storage device includes a plurality of controllers; a plurality of storage drives; and a switch device including a plurality of controller-side ports respectively connected to the plurality of controllers and a plurality of drive-side ports respectively connected to the plurality of storage drives. The switch device performs address translations between the plurality of controller-side ports and the plurality of drive-side ports.

Abstract: To provide stable processing performance and perform an appropriate failure processing in a storage device. A storage device includes a plurality of controllers; a plurality of storage drives; and a switch device including a plurality of controller-side ports respectively connected to the plurality of controllers and a plurality of drive-side ports respectively connected to the plurality of storage drives. The switch device performs address translations between the plurality of controller-side ports and the plurality of drive-side ports.

Abstract: Provided is a storage system in which a switch is logically divided into a plurality of partitions including: a plurality of first partitions which are coupled to a plurality of master devices of a processor unit and to which none of storage devices are coupled; and one or more second partitions which are coupled to a plurality of storage devices and which are not coupled to the processor unit. The switch has an address conversion function which is a function for enabling transfer between different partitions. A virtual master device is provided to each of the second partitions. With respect to each of the second partitions, the virtual master device in the second partition executes initial setting with respect to each of all storage devices coupled to the second partition.

Abstract: Provided is a storage apparatus including a plurality of storage devices which store data, a controller which executes data input/output processing to the storage devices, and a processor which transmits/receives information with the controller, wherein the controller manages a plurality of different tag numbers by separating the tag numbers into a plurality of groups, and upon receiving a first command from the processor, assigns a tag number belonging to one group among the plurality of groups to the first command, and transfers the first command to a designated storage device, and, upon subsequently receiving an instruction for a chip reset from the processor, executes a chip reset, and, upon subsequently receiving a second command from the processor, assigns a tag number belonging to a group which is different from the group used before the chip reset to the second command, and transfers the second command to a designated storage device.

Abstract: Provided is a storage system in which a switch is logically divided into a plurality of partitions including: a plurality of first partitions which are coupled to a plurality of master devices of a processor unit and to which none of storage devices are coupled; and one or more second partitions which are coupled to a plurality of storage devices and which are not coupled to the processor unit. The switch has an address conversion function which is a function for enabling transfer between different partitions. A virtual master device is provided to each of the second partitions. With respect to each of the second partitions, the virtual master device in the second partition executes initial setting with respect to each of all storage devices coupled to the second partition.

Abstract: Provided is a storage apparatus including a plurality of storage devices which store data, a controller which executes data input/output processing to the storage devices, and a processor which transmits/receives information with the controller, wherein the controller manages a plurality of different tag numbers by separating the tag numbers into a plurality of groups, and upon receiving a first command from the processor, assigns a tag number belonging to one group among the plurality of groups to the first command, and transfers the first command to a designated storage device, and, upon subsequently receiving an instruction for a chip reset from the processor, executes a chip reset, and, upon subsequently receiving a second command from the processor, assigns a tag number belonging to a group which is different from the group used before the chip reset to the second command, and transfers the second command to a designated storage device.

Abstract: A storage unit is provided with a plurality of sub storage units configured to include a plurality of hard disk drives, an enclosure, a printed wiring board, a power supply device, and a cable holder. The sub storage units each operate separately. The enclosure is provided in the array of the hard disk drives so that the distance can be shorter between the enclosure and each of the hard disk drives. With the provision of the cable holder, communications cables can be both brought closer to the printed wiring board. With such a configuration, the coupling point among the communications cables and the printed wiring board, and the enclosure can be favorably reduced. The resulting storage control apparatus can be mounted with a larger number of storage devices, thereby being able to maintain good signal quality.

Abstract: Proposed are a disk array system and a traffic control method with which reliability can be improved by preventing system shutdown. A disk array system comprises a controller for controlling data I/O to and from a backend unit; a plurality of expanders provided in the backend unit and connected to the controller by way of a tree-structure topology; a plurality of storage devices provided in the backend unit and each connected to the corresponding expander; and a control unit for controlling the controller on the basis of an I/O request from a host device. The disk array system is configured such that the controller notifies the control unit of a link fault that has occurred in the backend unit, and the control unit, when supplied with the link fault notification from the controller, restricts issuance of I/O requests from the host device or restricts receipt of I/O requests sent from the host device as necessary.

Abstract: The present invention aims to improve the performance of a storage apparatus. A controller of a storage apparatus stores therein for each piece of information indicating a communication rate in association with identification of the information piece, and performs speed negotiation for setting a communication rate with an expander upon detecting that coupling to the expander via a communication path has been established. The expander transmits identification information associated with its own maximum communication rate to the controller. The controller acquires the maximum communication rate of the expander on the basis of the identification information, obtains an expected value of the communication rate with the expander on the basis of the maximum communication rate of the expander and the maximum communication rate of the controller, and compares the communication rate set by the speed negotiation with the expected value.

Abstract: A storage unit is provided with a plurality of sub storage units configured to include a plurality of hard disk drives, an enclosure, a printed wiring board, a power supply device, and a cable holder. The sub storage units each operate separately. The enclosure is provided in the array of the hard disk drives so that the distance can be shorter between the enclosure and each of the hard disk drives. With the provision of the cable holder, communications cables can be both brought closer to the printed wiring board. With such a configuration, the coupling point among the communications cables and the printed wiring board, and the enclosure can be favorably reduced. The resulting storage control apparatus can be mounted with a larger number of storage devices, thereby being able to maintain good signal quality.

Abstract: A storage unit is provided with a plurality of sub storage units configured to include a plurality of hard disk drives, an enclosure, a printed wiring board, a power supply device, and a cable holder. The sub storage units each operate separately. The enclosure is provided in the array of hard disk drives so that the distance can be shorter between the enclosure and each of the hard disk drives. With the provision cable holder, communications cables can be both brought closer to the printed wiring board. With such a configuration, the coupling point among the communications cables and the printed wiring board, and the enclosure can be favorably reduced. The resulting storage control apparatus of the invention can be mounted with a larger number of storage devices, thereby being able to keep the signal quality.

Abstract: Proposed are a disk array system and a traffic control method with which reliability can be improved by preventing system shutdown. A disk array system comprises a controller for controlling data I/O to and from a backend unit; a plurality of expanders provided in the backend unit and connected to the controller by way of a tree-structure topology; a plurality of storage devices provided in the backend unit and each connected to the corresponding expander; and a control unit for controlling the controller on the basis of an I/O request from a host device. The disk array system is configured such that the controller notifies the control unit of a link fault that has occurred in the backend unit, and the control unit, when supplied with the link fault notification from the controller, restricts issuance of I/O requests from the host device or restricts receipt of I/O requests sent from the host device as necessary.

Abstract: A storage unit 3 is provided therein with a plurality of sub storage units 4. The sub storage units 4 are each configured to include a plurality of hard disk drives 5, an enclosure 6, a printed wiring board 7, a power supply device 8, and a cable holder 9. The sub storage units 4 operate each separately. The enclosure 6 is provided in the array of the hard disk drives so that the distance can be shorter between the enclosure 6 and each of the hard disk drives 5. With the provision of the cable holder 9, communications cables 9A and 9B can be both brought closer to the printed wiring board 7. With such a configuration, the coupling point among the communications cables 9A and 9B and the printed wiring board 7, and the enclosure 6 can be favorably reduced. As such, the storage control apparatus of the invention can be mounted with a larger number of storage devices, thereby being able to keep the signal quality.

Abstract: The storage system according to the present invention allows the number of host connections to be increased by connecting a plurality of storage control devices so that commands and data can be directly exchanged between each storage control device. The first storage control device has a plurality of controllers, and the second storage control device also has a plurality of controllers. Within each storage control device, controllers are connected by inter-controller communication paths. Also, between storage control devices, controllers belonging to different storage control devices are connected by inter-device communication paths. If the subject of processing of a command received by one storage control device is under the control of another storage control device, the command is transferred from the one storage control device to the other storage control device via the inter-device communication path.

Abstract: A controller performs data communication with a host system based on fiber channel protocol and controls data input/output to or from a SATA disk drive. The controller includes an FC/SATA converter powered by a main power supply, and a resource management processor powered by a standby power supply. The resource management processor controls the power supply from the main power supply to the FC/SATA converter.

Abstract: The storage system according to the present invention allows the number of host connections to be increased by connecting a plurality of storage control devices so that commands and data can be directly exchanged between each storage control device. The first storage control device has a plurality of controllers, and the second storage control device also has a plurality of controllers. Within each storage control device, controllers are connected by inter-controller communication paths. Also, between storage control devices, controllers belonging to different storage control devices are connected by inter-device communication paths. If the subject of processing of a command received by one storage control device is under the control of another storage control device, the command is transferred from the one storage control device to the other storage control device via the inter-device communication path.

Abstract: A controller performs data communication with a host system based on fibre channel protocol and controls data input/output to or from a SATA disk drive. The controller includes an FC/SATA converter powered by a main power supply, and a resource management processor powered by a standby power supply. The resource management processor controls the power supply from the main power supply to the FC/SATA converter.