摘要:
A disk array controller is made up of multiple disk array control units for implementing the data read/write operation and each having channel IF units, disk IF units, cache memory units and shared memory units. The disk array controller further includes inter connections for interconnecting the shared memory units and interconnecting the cache memory units across the border of disk array control units. Thereby alleviating the deterioration of performance due to the data transfer between the disk array control units, when the multiple disk array control units are to be operated as a single disk array controller.
摘要:
The disk array controller includes a plurality of interfaces with respective processors for connecting with a host computer or disk devices, duplicated shared memories connected in a one to one ratio between each interface and respective access paths, a selector connected to the plurality of interfaces, and a cache memory connected to the selector. The number of access paths between the selector and the plurality of interfaces is greater than the number of access paths between the cache memory and the selector. Each processor performs dual writing in the duplicated shared memories.
摘要:
A storage control apparatus is coupled to a central processing unit (CPU) and a storage unit to control input/output of data between the CPU and the storage unit. The storage control apparatus has at least two processors coupled to the CPU and the storage unit, a cache memory (CM) unit for temporarily storing data of the storage unit, a shared memory (SM) unit for storing information concerning control of the CM unit and the storage unit, and a selector coupled to the at least two processors, the CM unit and the SM unit through access paths to selectively apply access requests from the at least two processors to the CM unit and the SM unit.
摘要:
A pharmacologically acceptable acid addition salt of DC-52 with 0.5-2.0 equivalent weight of inorganic acid, sulfonic acid, acidic amino acid, citric acid, transaconitic acid, .alpha.-ketoglutaric acid, itaconic acid, malonic acid or ascorbic acid on the basis of DC-52, having the same degree of antitumor activity as DC-52, is superior to DC-52 in stability at powdering or at preservation.
摘要:
A rotary table assembly is configured to prevent torsional deformation of a sealing member on an outer peripheral surface of a rotary joint. The rotary joint has a distributor and a center shaft, which includes two hollow cylindrical center shafts respectively inserted into a through hole from opposite front and back surface sides of a rotatable table. The sealing member makes contact with the outer peripheral surface of the hollow cylindrical center shaft positioned near the front surface of the rotatable table. The distributor has a top region that is successively inserted from the back surface side of the rotatable table into the two hollow cylindrical center shafts, and a basal portion secured to a frame.
摘要:
A storage control apparatus according to the present invention includes a plurality of connecting units connected to one or more host computers and one or more hard disk drives as storage media for storing data, one or more non-volatile storage media which are of a different type from the hard disk drives and which store data WRITE requested from the host computer, a plurality of processing units for processing WRITE and READ requests from the host computer by using the hard disk drives or the non-volatile storage media and, a plurality of memory units for storing control information to be by the processing units.
摘要:
This storage apparatus that provides to a host computer a logical device for storing data sent from the host computer includes a nonvolatile memory for storing the data, a disk-shaped memory device for storing the data, and a controller for controlling the nonvolatile memory and the disk-shaped memory device. The controller redundantly configures the logical device with the nonvolatile memory and the disk-shaped memory device.
摘要:
A storage system 1 includes a channel interface (IF) unit 11 having an interface with a server 3, a disk IF unit 16 having an interface with a hard disk group 2, a memory unit 21 for storing data to be read/written from/to the server 3 or the hard disk group 2, a switching unit 51, and the hard disk group 2. The channel IF unit 11, the disk IF unit 16, and the memory unit 21 are connected to each other through the switching unit 51, and an encryption and decryption processing unit 201 is provided between a host IF unit 101 and a transfer controller 103 in the channel IF unit 11.
摘要:
A first storage system is connected to a second storage system, and an external device within the first storage system is provided to a host as a device of the second storage system. The second storage system includes a cache control section having cache adaptors, each controlling a disk and a cache, a protocol conversion section including protocol adaptors that switch requests from the host to appropriate ones of the cache adaptors, a management adaptor, and an internal network that mutually connects the cache adaptors, the protocol adaptors and the management adaptor. The first storage system being connected to any of the protocol adaptors is connected to the second storage system. The second storage system executes a processing for the external device by the cache control section, or connects to the first storage system through the protocol conversion section without the cache control section executing processing for the external device.
摘要:
This storage apparatus that provides to a host computer a logical device for storing data sent from the host computer includes a nonvolatile memory for storing the data, a disk-shaped memory device for storing the data, and a controller for controlling the nonvolatile memory and the disk-shaped memory device. The controller redundantly configures the logical device with the nonvolatile memory and the disk-shaped memory device.