Abstract: A storage control apparatus includes a memory, and a processor. The memory is configured to retain associative relation information for managing an associative relation between a hash value associated with a first address being inputted and a second address as an address of the storage device, filter information containing Bloom filters, and overlap count management information. The processor executes a process that causes the storage control apparatus to perform first storing the storage target data in the storage device without being registered in the filter information, second storing the storage target data in the storage device as well as registering the storage target data in the filter information, performing neither registering the storage target data in the filter information nor storing the storage target data in the storage device and deleting deletable data from the storage device.

Abstract: A deduplicate device includes: a first through N-th (N?3) bloom filters; a counting unit that performs a process of judging whether information indicating that a duplicate data of a storing-target data exists in a storage device is registered in each bloom filter sequentially until an unregistered bloom filter in which the information is not registered is found or that the information is registered in the N-th bloom filter is found, and registers, when the unregistered bloom filter is found, the information indicating that the duplicate data exists into the unregistered bloom filter; and a deduplicating unit that stores the storing-target data in the storage device when the counting unit finds the unregistered bloom filter, and stores index information relating the duplicate data in the storage device with the storing-target data when the counting unit finds that the information is registered in the N-th bloom filter.

Abstract: A computer-readable recording medium stores a program that causes a computer to execute a writing control process that includes receiving a writing request to write a first data to a first storage apparatus; determining a second data from among a series of data and based on a writing sequence of the series of data written to the computer and a count of storage areas at a second storage apparatus that sequentially selects from among the storage areas when data is received, a storage area to be over written by the received data, where the second data is written to the first storage apparatus and is identical to data that is stored in the storage area to be selected next at the second storage apparatus; and transmitting copy data of the first data to the second storage apparatus, when the second data has been written to the first storage apparatus.

Abstract: A thin film magnetic head includes a magnetoresistive effect (MR) laminated body that has the following structure: first and second magnetic layers in which the magnetization direction of at least one of the magnetic layers changes according to an external magnetic field; the first magnetic layer is provided at a lower side of a laminated direction; the second magnetic layer is provided at an upper side of the laminated direction; a non-magnetic intermediate layer made of ZnO sandwiched between the first and the second magnetic layers; a first intermediate interface layer is provided at the interface between the first magnetic layer and the non-magnetic intermediate layer; and a second intermediate interface layer is provided at the interface between the non-magnetic intermediate layer and the second magnetic layer. At least the first intermediate interface layer contains Ag and Zn, or Au and Zn.

Abstract: A manufacturing method of laser diode unit of the present invention includes steps: placing a laser diode on top of a solder member formed on a mounting surface of a submount, applying a pressing load to the laser diode and pressing the laser diode against the solder member, next, melting the solder member by heating the solder member at a temperature higher than a melting point of the solder member while the pressing load is being applied, and thereafter, bonding the laser diode to the submount by cooling and solidifying the solder member, thereafter, removing the pressing load, and softening the solidified solder member by heating the solder member at a temperature lower than the melting point of the solder member after the pressing load has been removed, and thereafter cooling and re-solidifying the solder member.

Abstract: A data existence judging device includes: L number of first storage areas each associated with one of L hash values; M number of second storage areas each associated with some of the L hash values; an information setting part, for each data in a data set, to calculate k hash values about the data, and, for each calculated hash value, when a count value in the first storage area associated with the calculated hash value is less than 2n?1, to count up the count value, whereas when the count value is 2n?1, to set 1 into the first storage area associated with the calculated hash value; and a judging part to calculate k hash values about an input data, and to judge that the input data is a new data when a count value in the first storage area associated with the input data is 0.

Abstract: A manufacturing method of laser diode unit of the present invention includes steps: placing a laser diode on top of a solder member formed on a mounting surface of a submount, applying a pressing load to the laser diode and pressing the laser diode against the solder member, next, melting the solder member by heating the solder member at a temperature higher than a melting point of the solder member while the pressing load is being applied, and thereafter, bonding the laser diode to the submount by cooling and solidifying the solder member, thereafter, removing the pressing load, and softening the solidified solder member by heating the solder member at a temperature lower than the melting point of the solder member after the pressing load has been removed, and thereafter cooling and re-solidifying the solder member.

Abstract: A method of manufacturing a magnetoresistive (MR) effective element having a pair of magnetic layers and a nonmagnetic intermediate layer including a ZnO film, wherein a relative angle of magnetization directions of the pair of magnetic layers varies according to an external magnetic field. The method includes a step for introducing a mix gas of oxygen gas and argon gas into a depressurized chamber, wherein a first target of ZnO, a second target of Zn and a substrate having a right-below layer are disposed in the chamber, and a step for depositing the ZnO film on the right-below layer by applying each of a first and second direct current (DC) application power to spaces between the first and second targets and the substrate respectively after the mix gas introducing step, wherein the first and second targets are set at negative potential, and the substrate is set at positive potential.

Abstract: An access method includes: obtaining, by a computer, a result of monitoring a busy rate and a number of access operations per unit time of a storage device, the storage device having a first storage area and a second storage area; calculating a characteristic of correlation between the busy rate and the number of access operations per unit time based on the result; calculating a second number of access operations per unit time based on the characteristic of the correlation such that a sum of a first busy rate corresponding to a first number of access operations per unit time and a second busy rate corresponding to a second number of access operations per unit time becomes equal to or lower than a given busy rate; and controlling a number of operations to access the second storage area per unit time based on the second number of access operations.

Abstract: An information processing apparatus includes a first storage unit and a processor. The first storage unit includes a first storage area. The processor receives a first request to write first data into the first storage area. The processor requests an external apparatus to write the first data into a second storage area in a second storage unit included in the external apparatus. The processor determines whether a first response has been received from the external apparatus. The first response indicates that the first data has been written into the second storage area. The processor writes the first data into the first storage area when the first response has been received. The processor requests, without writing the first data into the first storage area, the external apparatus to write second data stored in the first storage area into the second storage area when the first response has not been received.

Abstract: Nodes respectively store a multilayer transposed Bloom filter. A client selects a node N1 from among the group of nodes and transmits a search request to the node N1. Upon receiving a reply from the node N1, the client determines whether the received search result indicates “positive”. If the search result is not positive, the client selects in order of node number, a node N2 and transmits a search request to the node N2. Upon receiving a reply from the node N2, the client determines whether the received search result indicates “positive”. Upon determining that the search result is positive, the client outputs the search result and ends the search notification process.

Abstract: A method of managing storage implemented in a storage management device that manages storage to which access for information is made by a requesting processing apparatus, including randomly obtaining a prescribed number of data units from among data units that constitute the information from the storage, calculating a sample unit duplication ratio, which is a ratio at which the obtained data units duplicate each other, estimating an overall data unit duplication ratio, which is a ratio at which all data units stored in the storage duplicate each other, by using a prescribed function that utilizes the calculated sample unit duplication ratio, and outputting the estimated overall data unit duplication ratio to an output device.

Abstract: A non-transitory computer-readable recording medium stores therein a charge calculating program that causes a computer that manages a database of different data items to execute recording for each data item, information indicating the number of clients that receive the data item; extracting from the information recorded at the recording and for each data item to be received by a given client, information indicating the number of clients receiving the data item; calculating charges for the given client, based on the extracted information; and outputting the calculated charges.

Abstract: A storage apparatus includes a storing unit that stores a Bloom filter in which data characteristic values are registered, the data characteristic values extracting properties of data that are stored in areas into which a storage area is divided; and a processor that is configured to judge whether a first data characteristic value extracting a property of a first data that is to be written into the storage area is registered in the Bloom filter, and write the first data into the storage area, when the first data characteristic value is not registered in the Bloom filter.

Abstract: A deduplicate device includes: a first through N-th (N?3) bloom filters; a counting unit that performs a process of judging whether information indicating that a duplicate data of a storing-target data exists in a storage device is registered in each bloom filter sequentially until an unregistered bloom filter in which the information is not registered is found or that the information is registered in the N-th bloom filter is found, and registers, when the unregistered bloom filter is found, the information indicating that the duplicate data exists into the unregistered bloom filter; and a deduplicating unit that stores the storing-target data in the storage device when the counting unit finds the unregistered bloom filter, and stores index information relating the duplicate data in the storage device with the storing-target data when the counting unit finds that the information is registered in the N-th bloom filter.

Abstract: An information processing device is provided that provides service by executing a service provider program in a cluster system. The device includes a program information transmission unit that transmits to a monitoring node that monitors the cluster system, a node list information reception unit that receives node list information, an update target selection unit that determines which of the other information processing devices which are not yet updated with the service provider program by referring to the program information in the node list information, a command timing determination unit that determines a time after a lapse of the standby time found in the first update timing information as a command timing of the update command, an update timing information generation unit that generates second update timing information and an update command transmission unit that transmits the update command about the service provider program and the second update timing information.

Abstract: A magneto-resistive effect (MR) element includes first and second magnetic layers in which a relative angle formed by magnetization directions changes responsive to an external magnetic field, and a spacer layer positioned between the first and second magnetic layers. The first magnetic layer is positioned closer to a substrate above which the MR element is formed than the second magnetic layer. The spacer layer includes copper and metal intermediate layers and a main spacer layer composed primarily of gallium oxide. The copper and metal intermediate layers are positioned between the main spacer and first magnetic layers. The metal intermediate layer is positioned between the copper and main spacer layers. The metal intermediate layer is composed primarily of at least one from a group of one of magnesium and at least partially oxidized magnesium, and one of aluminum and at least partially oxidized aluminum.

Abstract: A file server has a conversion table that stores therein, in a corresponding manner, logical addresses specified by a higher-level layer and physical addresses specified by a disk driver that are address information indicative of a storage area in a disk device. The file server accesses the disk device with a storage area indicated by a physical address as an access destination and counts up the number of access requests to each storage area in a given period of time for each of the logical addresses. The file server then updates the conversion table such that the physical addresses are lined up in a descending order of the logical addresses of a higher number of the access requests counted. Thereafter, the file server changes storage areas of data stored in the storage device based on the conversion table updated.

Abstract: A magneto-resistive effect (MR) element includes: first and second magnetic layers in which a relative angle formed by magnetization directions changes according to an external magnetic field; and a spacer layer positioned between the first magnetic layer and the second magnetic layer. The spacer layer includes a main spacer layer composed of gallium oxide as a primary component and containing at least one metal element selected from a group of magnesium, zinc, indium and aluminum.

Abstract: A manufacturing method of laser diode unit of the present invention includes steps: placing a laser diode on top of a solder member formed on a mounting surface of a submount, applying a pressing load to the laser diode and pressing the laser diode against the solder member, next, melting the solder member by heating the solder member at a temperature higher than a melting point of the solder member while the pressing load is being applied, and thereafter, bonding the laser diode to the submount by cooling and solidifying the solder member, thereafter, removing the pressing load, and softening the solidified solder member by heating the solder member at a temperature lower than the melting point of the solder member after the pressing load has been removed, and thereafter cooling and re-solidifying the solder member.