Abstract: A disk array system includes storage devices, a storage device control unit, a connection unit being connected with the storage device control unit, channel control units, a shared memory, and a cache memory. Each channel control unit includes a first processor of converting file data, received through a local area network outside of the disk array system to which the channel control units belongs, into block data and requesting storage of the converted data in the plurality of storage devices and a second processor of transferring the block data to the storage devices through the connection unit and the storage device control unit in response to a request given from the first processor and is connected with the connection unit and the local area network.

Abstract: It is an object of the present invention to provide a laser welding process and a laser welding system, wherein the welding of a fine area can be achieved, for example, with a welding nugget diameter equal to or smaller than 100 ?m and a penetration depth equal to or larger than 200 ?m, and a reduction in size of the system can be achieved. To this end, a laser welding process according to the present invention comprises the steps of allowing a laser beam outputted from a laser beam generating means 1 to enter into an optical fiber 10 through a light-introducing optical unit 9, and applying the laser beam exiting from the optical fiber 10 to a weld zone through a light-delivering optical unit 11. The laser welding process is characterized in that the optical fiber 10 has a core diameter set to be within 100 ?m; an NA value for entrance of light into the optical fiber 10 is set to be equal to or smaller than 0.

Abstract: A storage subsystem and a storage controller adapted to take advantage of high data transfer rates of fiber channels while offering enhanced reliability and availability and capable of connecting with a plurality of host computers having multiple different interfaces. A loop is provided to serve as a common loop channel having fiber channel interfaces. Host interface controllers (HIFC) connected to host computers having different interfaces permit conversion between the fiber channel interface and a different interface as needed. Control processors, shared by the host interface controllers, each reference FCAL (fiber channel arbitrated loop) management information to capture a frame having an address of the processor in question from among the frames passing through the loop. I/O processing is then carried out by the controller in accordance with a range of logical unit numbers (LUN) set in the captured frame.

Abstract: A disk array system includes storage devices, a storage device control unit, a connection unit being connected with the storage device control unit, channel control units, a shared memory, and a cache memory. Each channel control unit includes a first processor of converting file data, received through a local area network outside of the disk array system to which the channel control units belongs, into block data and requesting storage of the converted data in the plurality of storage devices and a second processor of transferring the block data to the storage devices through the connection unit and the storage device control unit in response to a request given from the first processor and is connected with the connection unit and the local area network.

Abstract: A light is emitted from a light emitting element toward the other surface in a thickness direction of a scanning mirror which can be angularly displaced about an axial line. At least either one of a first light receiving portion and a second light receiving portion receives a light which is emitted from the light emitting element and reflected by a reflecting mirror. The first light receiving portion, the second light receiving portion, and the signal output section produce an electronic signal containing position information which indicates a position which is irradiated with the above-mentioned light. This position information indicates an amount of angular displacement of the scanning mirror. On the basis of this position information, a driving section scans the scanning mirror so that the predetermined irradiation position can be irradiated with a light emitted from a first light source.

Abstract: A harmonic system for use with metals and alloys such as titanium, steel, copper, gold, aluminum, etc. is disclosed. The harmonic laser system includes an oscillator cavity having a first end mirror and a harmonic separator mirror, an active medium positioned in the oscillator cavity, an electro-optic pump device for optically pumping the active medium to produce a first optical beam at a fundamental wavelength and a non-linear optical crystal positioned in the oscillator cavity to generate a second optical beam at a harmonic wavelength of the first optical beam, wherein the harmonic separator mirror outputs the second optical beam and reflects the first optical beam.

Abstract: In a storage device controlling apparatus which includes: a plurality of channel controllers having a circuit board on which are formed a file access processing section receiving from an information processing apparatus requests to input and output data in files as units via a network and an I/O processor outputting to a storage device I/O requests corresponding to the requests to input and output data; and a disk controller executing input and output of data into and from the storage device in response to the I/O requests sent from the I/O processors, at least one of the channel controllers receives data specifying an assignment of a logical volume to the channel controller, the data being sent from the information processing apparatus, and stores the received assignment.

Abstract: A storage subsystem and a storage controller adapted to take advantage of high data transfer rates of fiber channels while offering enhanced reliability and availability and capable of connecting with a plurality of host computers having multiple different interfaces. A loop is provided to serve as a common loop channel having fiber channel interfaces. Host interface controllers (HIFC) connected to host computers having different interfaces permit conversion between the fiber channel interface and a different interface as needed. Control processors, shared by the host interface controllers, each reference FCAL (fiber channel arbitrated loop) management information to capture a frame having an address of the processor in question from among the frames passing through the loop. I/O processing is then carried out by the controller in accordance with a range of logical unit numbers (LUN) set in the captured frame.

Abstract: A disk array system includes storage devices, a storage device control unit, a connection unit being connected with the storage device control unit, channel control units, a shared memory, and a cache memory. Each channel control unit includes a first processor of converting file data, received through a local area network outside of the disk array system to which the channel control units belongs, into block data and requesting storage of the converted data in the plurality of storage devices and a second processor of transferring the block data to the storage devices through the connection unit and the storage device control unit in response to a request given from the first processor and is connected with the connection unit and the local area network.

Abstract: In a storage device controlling apparatus which includes: a plurality of channel controllers having a circuit board on which are formed a file access processing section receiving from an information processing apparatus requests to input and output data in files as units via a network and an I/O processor outputting to a storage device I/O requests corresponding to the requests to input and output data; and a disk controller executing input and output of data into and from the storage device in response to the I/O requests sent from the I/O processors, at least one of the channel controllers receives data specifying an assignment of a logical volume to the channel controller, the data being sent from the information processing apparatus, and stores the received assignment.

Abstract: A technique that can update the firmware with services for clients continued on a circuit board that comprises a control unit of a storage system is provided. A plurality of blade that comprise control unit have previous BIOS on flash memory. Clusters are formed including the blade which is subject to firmware update. At the time of updating the firmware, for the update candidate substrate, the processing unit including processing to move the service provided by OS of blade to be subject to firmware update processing to OS of other blade in the cluster as well as firmware update processing for updating previous BIOS of blade which no longer provides services by the use of the BIOS update program and new BIOS image.

Abstract: A control method is disclosed for a storage control apparatus having a plurality of channel control units connected to communicate with each other and which receives a data input or data output request transmitted from an information processing device and controls writing and reading of data to a storage device in accordance with the data input/output request, and a disk control unit which carries out the writing and reading of data to the storage device in accordance with the control signal. A first channel control unit monitors the information processing device by communicating with the information processing device. When a problem is detected in the information processing device, the channel control unit restricts processing to be carried out in accordance with the data input/output request by a second channel control unit to which the data input/output transmitted from the information processing device is delivered.

Abstract: A magnetic recording medium having excellent durability and corrosion resistance as well as a magnetic recording device equipped with the magnetic recording medium is provided. The protective layer of the magnetic recording medium is composed of two layers, that is, a lower layer contacting with the magnetic layer and an upper layer on the lower layer. The internal stress of the lower layer is made smaller than that of the upper layer, and the surface free energy of the lower layer is made smaller than that of the upper layer.

Abstract: An operator cab 53, which is mounted rotatable on the vehicle body 51 of a hydraulic mini-shovel 50, comprises a cab box 1, a door 2, upper and lower link members 3 and 4, a slide member 6, a closed door stopper 12 and an opened door stopper 11. The cab box 1 has an internal cab room 1a and an entrance 15, which leads into the cab room 1a. The door 2 closes and opens the entrance 15 when it is moved forward and rearward, respectively. The upper and lower link members 3 and 4 have fixed ends 3a and 4a, each of which is connected pivotally to the cab box 1, and moving ends 3b and 4b, each of which is connected pivotally to the front end of the door 2. The slide member 6 comprises a bumper 6a, which is provided at the rear end of the door 2, and a rocker 6b, which is connected pivotally to the bumper 6a so as to swing freely and slides along a slide rail 5, which is provided externally on the cab box 1.

Abstract: An operator cab 53, which is mounted rotatable on the vehicle body 51 of a hydraulic mini-shovel 50, comprises a cab box 1, a door 2, upper and lower link members 3 and 4, a slide member 6, a closed door lock 7, an opened door lock 9 and a handle 13. The cab box 1 has an internal cab room 1a and an entrance 15, which leads into the cab room 1a. The door 2 closes and opens the entrance 15 when it is moved forward and rearward, respectively. The upper and lower link members 3 and 4 have fixed ends 3a and 4a, each of which is connected pivotally to the cab box 1, and moving ends 3b and 4b, each of which is connected pivotally to the front end of the door 2. The slide member 6 is connected pivotally to the rear end of the door 2 so as to swing freely and slides along a slide rail 5, which is provided externally on the cab box 1. The closed door lock 7, which is provided at the front end of the door 2, engages with a closed door striker 8, which is provided on the cab box 1, when the door 2 is closed.

Abstract: An operator cab 53, which is mounted rotatable on the vehicle body 51 of a hydraulic mini-shovel 50, comprises a cab box 1, a door 2, upper and lower link members 3 and 4, and a slide rail 5. The cab box 1 has an internal cab room 1a and an entrance 15, which leads into the cab room 1a. The door 2 closes and opens the entrance 15 when it is moved forward and rearward, respectively. The upper and lower link members 3 and 4 have fixed ends 3a and 4a, each of which is connected pivotally to the cab box 1, and moving ends 3b and 4b, each of which is connected pivotally to the front end of the door 2. The slide member 6 is connected pivotally to the rear end of the door 2 and slides along a slide rail 5, which is provided externally on the cab box 1.

Abstract: One or more master CHN 21AM and one or more back-up CHN 21AC are provided. In each of the one or more back-up CHNs 21AC, the I/O processor 504 is in a power on state, and the NAS processor is in a power off state. The I/O processor 504 accesses a shared memory 25 periodically, and if the fact that a problem has occurred in any master CHN 21AM has been written to the shared memory 25, then the power supply of the NAS processor 506 is turned on, and processing is carried out for switching the back-up CHN 21AC in which the I/O processor 504 is installed, to a master CHN 21 AM.

Abstract: A storage device controlling apparatus including a channel controller having a circuit board on which a file access processing section and an I/O processor are formed, the file access processing section receiving requests to input and output data in files as units from an information processing apparatus via a network, the I/O processor outputting I/O requests corresponding to the requests to input and output data to a storage device, the apparatus comprising: an exclusive control section performing exclusive control of a file when the channel controller receives from the information processing apparatus the requests to input and output data of the file.

Abstract: A storage system includes a storage controller connected to higher-level devices and a plurality of storages connected to the storage controller for storing data from the higher-level devices. The storage controller includes a channel controller for establishing interface for the higher-level devices, the channel controller including trace information representing details of the interface, and storages for storing the trace information from the channel controller in a format which can be accessed by the higher-level devices. In this configuration, when the channel controller receives a trace information fetching indication from one of the higher-level devices, the channel controller transfers trace information to a cache memory and the storages or to the cache memory or the storages.

Abstract: In a storage device controlling apparatus which includes: a plurality of channel controllers having a circuit board on which are formed a file access processing section receiving from an information processing apparatus requests to input and output data in files as units via a network and an I/O processor outputting to a storage device I/O requests corresponding to the requests to input and output data; and a disk controller executing input and output of data into and from the storage device in response to the I/O requests sent from the I/O processors, at least one of the channel controllers receives data specifying an assignment of a logical volume to the channel controller, the data being sent from the information processing apparatus, and stores the received assignment.