Abstract: A first MR sensor and a second MR sensor are a combination of a first magnetic resistance effect element pattern and a second magnetic resistance effect element pattern. The first MR sensor and the second MR sensor are disposed a prescribed distance apart such that, when the first MR sensor receives the greatest quantity of the magnetic field component of a magnet oriented parallel to the axial direction of a piston, the second MR sensor receives the greatest quantity of the magnetic field component of a magnet oriented parallel to the radial direction of the piston.

Abstract: An update control method executed by a processor included in an update control apparatus configured to update control programs respectively set up in a plurality of computers, the update control method includes acquiring update information and new control programs, the update information indicating update priority of the control programs of the plurality of computers and a progress status of the update; providing the new control programs to the plurality of computers; updating the progress status included in the update information based on information about a computer with the update of the control program completed among the computers; determining, based on the updated progress status, timings to reboot the plurality of respective computers such that the control programs of the plurality of computers are updated according to the update priority indicated by the update information; and updating the control programs of the plurality of computers based on the determined timings.

Abstract: A group generation unit 111 regards, as an invalid area, an area of a first storage medium in which data to be updated is stored and stores updated data in the first storage medium. A reorganization processing unit executes a process of selecting some first groups, calculating, for each of the selected first groups, the number of second storage media to be secured to store data that is stored in an area other than the invalid area of the first storage medium, securing the second storage media according to the levels of priority that are determined according to the calculated number, and transferring the data that is stored in the area other than the invalid area of the first storage medium to the second storage media. A volume management unit moves, to a second group, the first medium on which the transfer performed by the reorganization processing unit completes.

Abstract: A storage control apparatus includes a memory and a processor coupled to the memory. The processor is configured to identify respective storage groups to which a plurality of storing devices to apply firmware belong, from a plurality of storage groups that are process targets according to an access request from an upper apparatus; and set respective priorities for an application process of the firmware to the identified storage groups, based on estimated values of processing time according to the access request for each of the identified storage groups. The processor is also configured to execute the application process on storing devices belonging to storage groups to which the priorities are set, in execution orders in accordance with the priorities that are set; and execute a process according to the access request on storage groups other than the storage groups to which the application process is being executed.

Abstract: An update control method executed by a processor included in an update control apparatus configured to update control programs respectively set up in a plurality of computers, the update control method includes acquiring update information and new control programs, the update information indicating update priority of the control programs of the plurality of computers and a progress status of the update; providing the new control programs to the plurality of computers; updating the progress status included in the update information based on information about a computer with the update of the control program completed among the computers; determining, based on the updated progress status, timings to reboot the plurality of respective computers such that the control programs of the plurality of computers are updated according to the update priority indicated by the update information; and updating the control programs of the plurality of computers based on the determined timings.

Abstract: A storage control device includes a processor. The processor is configured to classify second type storage devices into a first group and a second group. The second type storage devices temporarily store thereof data held in a first type storage device. The processor is configured to access the first type storage device using storage devices belonging to the second group while updating firmware of storage devices belonging to the first group.

Abstract: A storage controller, when writing n sets of data into a first storage device, adds dummy data to other sets of data except for a first set of data having a largest size among the n sets of data such that sizes of other sets of data become equal to the size of the first set of data, calculates (n?1) parities based on the first set of data and the other sets of data, and when reading the n sets of data from the first storage device, concurrently performs a processing of reading a second set of data having a smallest size among the n sets of data from the first storage device and a processing of restoring each of two or more sets of data in the n sets of data except for the second set of data, by using the (n?1) parities and the dummy data.

Abstract: A group generation unit 111 regards, as an invalid area, an area of a first storage medium in which data to be updated is stored and stores updated data in the first storage medium. A reorganization processing unit executes a process of selecting some first groups, calculating, for each of the selected first groups, the number of second storage media to be secured to store data that is stored in an area other than the invalid area of the first storage medium, securing the second storage media according to the levels of priority that are determined according to the calculated number, and transferring the data that is stored in the area other than the invalid area of the first storage medium to the second storage media. A volume management unit moves, to a second group, the first medium on which the transfer performed by the reorganization processing unit completes.

Abstract: A storage apparatus, including a first group including first storage media storing data and a second group including second storage media storing no data, makes an area of the first storage media which stores updating target data an invalid area and to store updated data into an area of the first storage media, migrates to the second storage media data stored in an area other than the invalid areas of the set of the first storage media when determining that the first group includes the set of the first storage media in which the sum of the invalid areas is not less than the capacity of the one storage medium, and moves a group including the first storage media from which migration of the data is completed from the first group to the second group.

Abstract: A processor generates a parity from dummy data attached to a first piece of data of a plurality of pieces of data and a piece of data other than the first piece of data when writing the plurality of pieces of data into a first storage apparatus. Then, the processor stores the parity in a second storage apparatus. The processor performs a reading-out process in parallel with a restoration process when reading out the plurality of pieces of data from the first storage apparatus and writing them into the second storage apparatus. The reading-out process is a process to read out the first piece of data from the first storage apparatus and to write it into the second storage apparatus, and the restoration process is a process to restore a second piece of data among the plurality of pieces of data by using the dummy data and the parity.

Abstract: A storage control device includes a processor. The processor is configured to classify second type storage devices into a first group and a second group. The second type storage devices temporarily store thereof data held in a first type storage device. The processor is configured to access the first type storage device using storage devices belonging to the second group while updating firmware of storage devices belonging to the first group.

Abstract: A library apparatus includes an initialization processing unit and an operation processing unit. The initialization processing unit, when accepting an initialization request to initialize a storage medium to which a wireless communication device is added, the wireless communication device including an IC chip with management information and including an electronic paper with a display unit for displaying the management information, stores a label name of the storage medium and data in the management information, the label name being acquired through the initialization request, and the data being written to a block used as an index label of the storage medium. The operation processing unit, when loading the storage medium into a drive, writes the data that the initialization processing unit has stored in the management information corresponding to the storage medium to the block used as the index label of the storage medium.

Abstract: Provided is a plating catalyst coating agent that offers good plating quality, is excellent in adhesion, and enables thinning of a plating catalyst layer. The plating catalyst coating agent includes a carrier (A) supporting catalytic metal fine particles and a binder (B), the binder (B) includes an aqueous resin emulsion (B1), the carrier (A) has an average particle diameter (D50) of 20 to 90 nm, the catalytic metal fine particles supported on the carrier (A) include palladium, and a content ratio of the binder (B) to the carrier (A) ((B)/(A)) is 0.25 to 0.60.

Abstract: A storage control apparatus writes n pieces of data (here, n is an integer greater than 1) in a first memory apparatus, and reads the n pieces of written data from the first memory apparatus. A parity calculation unit calculates parity based on divided data extracted from each of the n pieces of data for each certain size, and stores the calculated parity in a second memory apparatus. A read control unit restores, in reading the n pieces of data from the first memory apparatus, at least one of the n pieces of data instead of reading it from the first memory apparatus but using other data having been read from the first memory apparatus among the n pieces of data and the parity stored in the second memory apparatus.

Abstract: A data management apparatus has a first storage unit, a first selecting unit, a second selecting unit, and a second storage unit. The first storage unit stores data associated with first identification information. When writing data out to a storage medium, the first selecting unit selects a first storage medium on which the first identification information corresponding to the data to be written out is displayed, from among a plurality of storage media. When the first storage medium is not available, the second selecting unit selects a second storage medium attached with a display unit configured to display stored information, from among the plurality of storage media, and stores the first identification information in the display unit of the second storage medium.

Abstract: A storage apparatus, including a first group including first storage media storing data and a second group including second storage media storing no data, makes an area of the first storage media which stores updating target data an invalid area and to store updated data into an area of the first storage media, migrates to the second storage media data stored in an area other than the invalid areas of the set of the first storage media when determining that the first group includes the set of the first storage media in which the sum of the invalid areas is not less than the capacity of the one storage medium, and moves a group including the first storage media from which migration of the data is completed from the first group to the second group.

Abstract: A storage system includes a storage apparatus, a control apparatus, and a host apparatus. The storage apparatus includes a recording medium. The control apparatus includes a detection unit and a control unit. The detection unit detects whether a recording medium loaded in the storage apparatus is a stand-alone-only recording medium that is used in a stand-alone mode. When the recording medium is the stand-alone-only recording medium, the control unit registers a physical volume of the stand-alone-only recording medium as a logical volume and automatically switches the operation mode of the control apparatus to the stand-alone mode.

Abstract: A storage system includes a storage apparatus, a control apparatus, and a host apparatus. The storage apparatus includes a recording medium. The control apparatus includes a detection unit and a control unit. The detection unit detects whether a recording medium loaded in the storage apparatus is a stand-alone-only recording medium that is used in a stand-alone mode. When the recording medium is the stand-alone-only recording medium, the control unit registers a physical volume of the stand-alone-only recording medium as a logical volume and automatically switches the operation mode of the control apparatus to the stand-alone mode.

Abstract: A storage controller, when writing n sets of data into a first storage device, adds dummy data to other sets of data except for a first set of data having a largest size among the n sets of data such that sizes of other sets of data become equal to the size of the first set of data, calculates (n?1) parities based on the first set of data and the other sets of data, and when reading the n sets of data from the first storage device, concurrently performs a processing of reading a second set of data having a smallest size among the n sets of data from the first storage device and a processing of restoring each of two or more sets of data in the n sets of data except for the second set of data, by using the (n?1) parities and the dummy data.

Abstract: A library apparatus includes an initialization processing unit and an operation processing unit. The initialization processing unit, when accepting an initialization request to initialize a storage medium to which a wireless communication device is added, the wireless communication device including an IC chip with management information and including an electronic paper with a display unit for displaying the management information, stores a label name of the storage medium and data in the management information, the label name being acquired through the initialization request, and the data being written to a block used as an index label of the storage medium. The operation processing unit, when loading the storage medium into a drive, writes the data that the initialization processing unit has stored in the management information corresponding to the storage medium to the block used as the index label of the storage medium.