Fujitsu Corporation

Tatsuo Kumano

Masahisa Tamura

Yasuo Noguchi

Kazutaka Ogihara

Kazuichi Oe

Takashi Watanabe

Yoshihiro Tsuchiya

Tetsutaro Maruyama

Toshihiro Ozawa

Munenori Maeda

Ken Iizawa

Jun Kato

Riichiro Take

Shigeyuki Miyamoto

Minoru Kamoshida

Minoru Kamosida

Yukihiro Watanabe

Kazunori Nishizono

Hirokazu Tanaka

Takahiro Watai

Tetsuji Funaki

Ken Ilzawa

A usage prediction method executed by a computer, the usage prediction method includes classifying a plurality of records corresponding to a plurality of times included in first time-series data indicating a history of usages of a resource into a plurality of groups respectively corresponding to attributes of the plurality of times; generating second time-series data for each attribute by combining the records belonging to the group corresponding to the same attribute for the plurality of classified groups in order of the times; generating, for each attribute, an expression for calculating a predicted value to be used for calculating a predicted value of the usage based on the generated second time-series data; and calculating the predicted value of the usage based on the expression for calculating the predicted value for each attribute.

Usage prediction method and storage medium

A non-transitory computer-readable storage medium having stored therein a program, the program executing a process include storing an object that is a unit obtained by sectioning received data by a certain size, the object including a plurality of sessions; calculating a value related to an acquisition time for each of a plurality of data acquisition methods that include a first method that acquires the data in a unit of the session and a second method that acquires the data in a unit of the object; determining the data acquisition method based on the value related to the calculated acquisition time; performing the data acquisition with the determined data acquisition method; periodically acquiring the data with the data acquisition method other than the determined data acquisition method; updating the value related to the acquisition time; and determining the data acquisition method based on the value related to the acquisition time.

Data acquisition device, data acquisition method and storage medium

A method performed by a computer for analyzing access to a storage device, the method includes: executing a calculating process that includes calculating, for each of a plurality of ranges obtained by dividing a storage area of the storage device, an access number or a variation of the access number in each of a plurality of periods, wherein the access number indicates the number of times of access to each of the plurality of ranges; and executing a determining process that includes determining a correlation between any two of the plurality of ranges in accordance with the access number or the variation of the access number for each period in each of the plurality of ranges.

Method, system and non-transitory computer-readable storage medium for analyzing access to storage device

An information processing apparatus coupled to a storage device that stores object data including pieces of data, the information processing apparatus including a memory and a processor configured to execute a process including measuring a first acquisition time to acquire data that satisfy an acquisition condition from the storage device on an object-by-object basis, measuring a second acquisition time to acquire the data on a session-by-session basis, determining whether to acquire the data that satisfy the acquisition condition with an object-based acquisition that acquire the data on the object-by-object basis, or with a session-based acquisition that acquire the data on the session-by-session basis based on the first acquisition time and the second acquisition time, and upon a reception of a data acquisition request including the acquisition condition, acquiring the data that satisfy the acquisition condition on from the storage device in accordance with a result of the determining.

Information processing apparatus, information processing system, and non-transitory computer-readable storage medium

An information processing apparatus includes a memory and a processor coupled to the memory. The processor is configured to calculate, when writing a first data block at a first address on a storage, a first index value corresponding to a number of times of writing data at the first address. The processor is configured to determine, on basis of the first index value, whether to perform or hold deduplication on the first data block. The processor is configured to switch between performing and holding the deduplication on the first data block depending on a result of the determination.

Information processing apparatus and method for deduplication

An information processing apparatus includes a processor. The processor converts data of a hierarchical structure including a nested structure inputted in a first data format into a second data format representing the data using a plurality of tables and stores the converted data into a storing unit. The processor generates, for each information element of the inputted data, a first table including a value of the information element, and associates each of a plurality of the first tables with a corresponding another first table according to the nested structure of the data and generates a second table by integrating the first tables that satisfy a predetermined condition among the plurality of the first tables.

Information processing apparatus, computer-readable recording medium having stored therein data conversion program, and data conversion method

An information processing system including: a plurality of second information processing apparatuses connected to a first information processing apparatus via a network; and a management apparatus. The plurality of second information processing apparatuses dispersedly manage indexes established for searches using data and metadata of the data. The management apparatus includes a processor configured to monitor a search request transmitted from the first information processing apparatus, and to specify, on the basis of a monitoring result by the processor, a combination of types of the metadata, for which the processor should cause a same second information processing apparatus to manage the indexes, and the same second information processing apparatus and cause the specified same second information processing apparatus to manage the indexes of the type of the metadata of the specified combination.

Information processing system, recording medium, and index management method

A communication recording apparatus includes: a storage unit and a computational unit. The storage unit stores packets transmitted from a transmitter apparatus to a destination apparatus. The computational unit executes a process including deciding, in accordance with a port number included in the received packets, whether the packets are to be compressed, compressing the packets decided to be compressed, and storing the compressed packets in the storage unit.

Communication recording apparatus, system and method

A first processor is configured to acquire measurement values of plural types of processing index values each indicating a state of processing loads on a storage control device, and plural types of access index values each indicating a state of loads of an access process performed for each of plural pieces of data stored in a first storage device. The first processor is configured to select a first access index value corresponding to a first processing index value when the acquired measurement value of the first processing index value exceeds a threshold value. The first processor is configured to move a first piece of data from the first storage device to a second storage device. The acquired measurement value of the first access index value for the first piece of data is higher than the acquired measurement value of the first access index value for any other piece of data.

Storage control device and storage control method

A computer includes a memory that stores a program and received data; and a processor that executes an operation by executing the program stored in the memory, the operation including storing the received data into a first database having a first data structure in which reading is performed in a random access manner and writing is performed in a sequential access manner, when the received data is received from a second apparatus is as same as data stored in a first apparatus which has a failure, and copying the received data stored in the first database to a second database having a second data structure in which reading is performed in a sequential access manner and writing is performed in a random access manner.

Computer, data storage method, and information processing system

A transfer data block is selected, and a data file including the transfer data block is selected as a transfer data file. All the data blocks of the transfer data file are added to the transfer data block. When all the data files including each transfer data block is selected as a transfer data file, the transfer data block is selected as a deletion data block. When a total data amount of the deletion data block is larger than or equal to a predetermined target deletion data amount and a ratio of a total data amount of the transfer data block to the total data amount of the deletion data block is smaller than or equal to a predetermined value, the data file is transferred from a transfer source node to a transfer destination node. Accordingly, a storage can be used efficiently.

Transfer control device, non-transitory computer-readable storage medium storing program, and storage apparatus

A first information processing apparatus transmits a message storing a replica of data stored in the first information processing apparatus. The message has an unspecified destination. A first relay apparatus detects a second information processing apparatus provided in a network to which the first relay apparatus belongs. The first relay apparatus selects, as a transfer destination of the message, the second information processing apparatus or a second relay apparatus upon receiving the message. The first relay apparatus transfers the message to the selected transfer destination. The second information processing apparatus stores the replica therein upon receiving the message.

Replica deployment method and relay apparatus

A storage apparatus is provided, including a first storage unit; a load information obtaining unit that obtains load information for each of a plurality of portions defined by dividing the first storage unit; a portion identifying unit that identifies a candidate portion that is to be relocated in the first storage unit based on the load information; a determining unit that determines whether or not data in the candidate portion is allowed to be migrated to a second storage unit, the second storage unit having a performance value higher than a performance value of the first storage unit; an adder that adds the second storage unit, when the determining unit determines that the data in the candidate portion is not allowed to be migrated; and a relocation unit that migrates the data in the candidate portion from the first storage unit to the added second storage unit.

Storage pool-type storage system, method, and computer-readable storage medium for peak load storage management

A storage device being one of a plurality of storage devices storing data includes a memory and a processor coupled to the memory. The processor executes determining, when having received a new request and a new priority information during a preparation for an execution of another update processing, whether a new priority indicated by the new priority information is higher than a priority of the update processing in the preparation. The process including canceling the update processing in the preparation when having determines at the determining that the new priority is higher than the priority of the update processing in the preparation. The process includes forwarding the new request and the new priority information to another storage device when having determined at the determining that the new priority is higher than the priority of the update processing in the preparation.

Storage device, computer-readable recording medium, and storage control method

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.

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Kawasaki, Japan

Tatsuo Kumano