Fujitsu Corporation

Shinichi Nishizono

Koji Uchida

Yoshinari Shinozaki

Hidenori Yamada

Akihito Kobayashi

Takashi Kawada

Mikio Ito

Katsuhiko Nagashima

Kazuhiko Ikeuchi

Hidejirou Daikokuya

Shinya Mochizuki

Hideo Takahashi

Tomohiko Muroyama

Hidejiro Daikokuya

Kazuma Takatsu

Hideki Yamanaka

Kazuyoshi Watanabe

Akihiro Ueda

Kenji Hattori

Tohru Kobayashi

Shoji Oshima

Hideaki Omura

Sanae Kamakura

Atsushi Takakura

Atsushi Katano

Hajime Kondo

Minoru Maeda

Ryoko Masuda

Naoto Takeishi

Hidemasa Hatano

Naruhiro Oogai

Takaaki Saito

Takumi Saito

A storage control device operable to be one of a plurality of storage control devices included in a storage device, the storage control device includes: a memory; and a processor coupled to the memory, the processor being configured to processing, the processing including: executing a determination processing that includes determining whether activation of the storage control device is caused by activation of the entire storage device or activation of the storage control device alone; and executing a region setting processing that includes setting a control information storage region that stores control information used to enable a function of the storage device according to a determination result by the determination processing.

Storage control device and non-transitory computer-readable storage medium for storing control program

A storage control device includes a memory and a processor. The processor configured to, when a request for writing first data to a first unit region among unit regions included in a first storage region is received, write the first data to the first unit region in a second storage region corresponding to a snapshot, the snapshot being corresponding to the first storage region. The processor is further configured to send a first completion response to the request for writing. The processor is further configured to, when a first read request requesting for reading from the first unit region in the second storage region is received, send second data stored in the first unit region in the first storage region, as read data in accordance with the first read request.

Storage control device, non-transitory computer-readable storage medium, and storage control method

A monitoring server includes a transmission and reception unit that receives information from a first storage device and a second storage device by performing polling to the first storage device and the second storage device at a certain interval, and transmits the received information to the first storage device and the second storage device at next polling. The first storage device and the second storage device includes a failover processing unit that inactivates a communication port when the failover processing unit determines that abnormality has occurred in a communication path between the first storage device and the second storage device and determines, based on the polling from the monitoring server, that abnormality has occurred in a communication path between the storage device and the monitoring server.

Storage system, storage device, and monitoring server

There is provided an information processing apparatus including a control unit. The control unit adds type information indicating a first type in a first operation request in which operation target storage devices are specified by unique identifiers, respectively, used in a first storage apparatus and outputs the first operation request to the first storage apparatus through the network. When the control unit transmits the first operation request to a second storage apparatus and receives an error response indicating a type error from the second storage apparatus after transparent failover is executed, the control unit adds type information indicating the second type in a second operation request in which operation target storage devices are specified by unique identifiers, respectively, used in the second storage apparatus and outputs the second operation request to the second storage apparatus through the network.

Information processing apparatus and storage system

An apparatus for copying data to another apparatus including a receiving buffer, includes: a transmitting buffer including a plurality of areas for temporary storing data of the copying; and a processor for executing a process, including: receiving information indicative of an instantaneous vacant area of the receiving buffer of the another apparatus, the vacant area being capable of temporarily storing data that could be transmitted from the transmitting buffer, determining an area of the transmitting buffer that stores data to be transmitted subsequently in reference to the information of the vacant area, and transmitting data stored in the determined area of the transmitting buffer to the receiving buffer of the another apparatus.

Storage system control method

An apparatus including: a first storage for storing first data; second storages for storing the first data; a storage controller for storing the first data stored in the first storage into the second storage; a third storage for saving data including second data; a saving device for reading the data and saving the data in the third storage; a data set output device for outputting the data to a copy destination device; a restoration device for storing the data saved in the third storage into available ones of the second storages; and a suspending device for causing the data set output device to output all of the data stored in the second storage to the copy destination device and then suspending the output of the data by the data set output device to the copy destination device to place the data set output device in a suspend state.

Storage apparatus, controller and storage apparatus control method

A storage apparatus includes a memory that stores data groups, a rearranging unit that rearranges a transmission group order of the data groups based on each of storage positions in a storage device provided in a copy destination storage apparatus in which the each of data groups is to be stored, and a transmitting unit that transmits the data groups rearranged by the rearranging unit to the copy destination storage apparatus.

Storage apparatus, control method for storage apparatus, and storage system

A save control section included in a storage apparatus continuously performs writeback by which a data group is read out from a plurality of storage sections of the storage apparatus and by which the data group is saved in a data group storage section of the storage apparatus, or staging by which a data group saved in the data group storage section is distributed and stored in the plurality of storage sections according to storage areas of the data group storage section which store a plurality of data groups. An output section of the storage apparatus outputs in block a data group including the data stored in each of the plurality of storage sections. The data group storage section has the storage areas for storing a data group.

Storage apparatus and storage apparatus control method

A storage apparatus includes a storage module, a memory having areas storing data to be copied to the storage device, a saving buffer for temporarily saving the data stored in the areas, a control module for executing receiving a write request including the data to be stored in the storage apparatus, storing the data included in the write request to the storage module and one area, saving the data stored in the one area to the saving buffer when the number of areas which the copying is executed is not less than the threshold value, copying the data stored in the one area to the storage device or writing the saved data stored in the saving buffer to the one area when the number of areas which the copying is executed is less than the threshold value, determining the threshold value in accordance with an amount of the write request.

Storage apparatus and method for storage apparatus

A storage apparatus includes a copy control unit for managing a copy session for copying an copy source data area in at least one of the first to the Mth copy source disk groups to an copy destination data area in a corresponding copy destination disk group, setting a first to an Mth copy session groups, each of the copy session groups including one or more copy sessions from the ith copy source disk group to the ith copy destination disk group as the copy session, and performing repeatedly a selection operation for cyclically selecting a copy session from each of the first to the Mth copy session groups in a predetermined sequence and a control operation for cyclically executing copy processing on a predetermined copy processing unit basis for the M copy sessions selected by the selection operation in a predetermined sequence for a prescribed number of times.

Storage apparatus and storage control apparatus

A system creates a configuration definition table to be used for accessing a physical disk according to a host I/O request, to decrease a memory size of the configuration definition table even if common firmware is used for models with different scales. For this, a model correspondence table to show the definition of each model is provided in a configuration setup processing module, the maximum values of this model are recorded in a memory based on this content, and a memory area for each item is secured. And the actual content of the configuration definition is developed on the secured memory. Therefore even for a diversity of models, the memory size of the configuration definition table can be decreased to a size matching the model, with common firmware regardless the model.

Configuration definition setup method for disk array apparatus, and disk array apparatus

An interdevice communication monitoring unit-calculates a variable timeout time (T&#x2212;T) by subtracting an elapsed time T from a predetermined fixed timeout time Tfor monitoring an intermodule communication to monitor an elapsed time of an intermodule communication. The fixed timeout time Tis a time shorter than a predetermined interface connection check time Tfor monitoring an interface connection with a channel. When the elapsed time T of the intermodule communication exceeds the variable timeout time (T&#x2212;T), the interdevice communication monitoring unit requests a channel to separate the interface connection, and then when an end response is obtained from a control module, requests the channel for an interface reconnection and then transmits an end response.

RAID apparatus, and communication-connection monitoring method and program

In the present invention, for each set of blocks [#(0) to #(N&#x2212;1)] storing update data, a history block [#(N)] storing an update state value, for example, a generation, time or check code, showing an update state is provided, constituting a set of management data as a check object. When writing update data on a disk, a new update state value is calculated for the same set of management data and stored in memory as update state confirmation value. The new update state value is also set as write data in the history block in the same set of management data, and the entire of the set of management data including update data and update state value are written onto a disk. The history block is read and disk write omissions are detected by comparing the update state value and the update state confirmation value stored in memory.

Apparatus and method for detecting disk write omissions

A storage control apparatus concatenates a plurality of logical units to construct a large capacity logical unit, wherein logical units extending over a plurality of controllers can be concatenated. The channel adapter sends an I/O request to one controller which charges one logical unit constituting the concatenation logical unit, out of a plurality of controllers when an I/O request is sent from a host to the concatenation logical unit LU linking a plurality of logical units, executes I/O processing in the one controller, then sends the I/O request to another controller which charges another logical unit constituting the concatenation logical unit, and continues I/O processing in the another controller.

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Kawasaki, Japan

Shinichi Nishizono