Fujitsu Corporation

Yoshinari Shinozaki

Shinichi Nishizono

Takashi Kawada

Hidenori Yamada

Koji Uchida

Akira Saito

Norihide Kubota

Yoshihito Konta

Yuji Tanaka

Yusuke Suzuki

Yusuke Kurasawa

Naohiro Takeda

Akio Yamaguchi

Marino Kajiyama

Toshio Kikuchi

Hideyuki Tanaka

Hideaki Omura

Hirotomo Tokoro

Mihoko Wada

Naruhiro Oogai

Atsushi Kawamoto

A storage control apparatus includes a memory to store meta-information associating a position of a logical area with a position of a physical area, and a processor to, when a first data block including data, a check code corresponding to the data, and first information related to a position within the logical area is stored in the physical area, and a second data block including the data, the check code, and second information related to a position within the logical area is written in the logical area, obtain a first position at which the first data block is present in the physical area, based on meta-information of the first data block in the meta-information, associate the first position as a position of the physical area in meta-information of the second data block in the meta-information with the position to which the second data block is written in the logical area.

Storage control apparatus and storage control method for deduplication

A storage control apparatus includes a memory configured to store meta-information for associating addresses of a logical area and a physical area with each other, and a processor coupled to the memory and configured to read out first meta-information corresponding to a first logical area from the memory, specify a first address of the physical area corresponding to a copy source address of the data based on the first meta-information, read out second meta-information corresponding to a second logical area that is set as a copy destination of the data in the logical area from the memory, specify a second address of the physical area corresponding to a copy destination address of the data based on the second meta-information, and execute copy of the data by associating the first address and the second address with each other as storage areas of the data.

Storage control apparatus and storage control method

An information processing apparatus includes a memory and a processor configured to obtain information on a relation between virtual volumes used by a virtual machine and physical volumes provided in a storage apparatus from a management machine configured to manage allocations of the virtual volumes to the physical volumes; store the obtained information into a management information stored in the memory; and in response to receiving a copy request, obtain information on a first physical volume allocated to the first virtual volume designated as a copy participant in the copy request from the management information when the information on the first virtual volume is present in the management information, and send the storage apparatus a copy instruction designating the first physical volume as a copy participant. Obtain the information on the relation is performed when the information on the first virtual volume is not present in the management information.

Information processing apparatus, storage apparatus, and information processing system wherein virtual volume to physical volume mapping is updated from management machine responsive to storage indicating said physical volume is not present

A backup source volume is a virtual volume, a plurality of regions of the backup source volume is allocatable to the storage device. A storage control device is configured to set a backup destination volume, the backup destination volume includes a plurality of regions, store allocation information which indicates a first region of the plurality of regions of the backup source volume is allocated to the storage device and indicates a second region of the plurality of regions of the backup source volume is not allocated to the storage device, the first region and the second region corresponding to a third region and a fourth region included in the plurality of regions of the backup destination volume respectively, set the forth region free from the first data stored in the at least one storage device, and copy second data stored in the first region to the third region.

Storage control device, method and storage system to backup data using allocation information

A storage management apparatus includes a prevention instructing unit and an execution instructing unit. The prevention instructing unit transmits an update prevention instruction to prevent data in a backup source volume from being updated by an information processing apparatus. After the update prevention instruction is transmitted, the execution instructing unit transmits to the storage apparatus an execution instruction to cause the storage apparatus to execute a snapshot creation process and a backup process. The snapshot creation process creates a snapshot of the backup source volume using a copy-on-write scheme. The backup process copies updated data among the data in the backup source volume to a backup destination volume.

System and apparatus for controlling data backup using an update prevention instruction

A management information storage section included in a relay apparatus stores first management information for managing an address of a first buffer which stores data transmitted from a first apparatus to a second apparatus and second management information for managing an address of a second buffer corresponding to the first buffer. An information processing section swaps the address of the first buffer managed by the first management information for the address of the second buffer managed by the second management information. A transmission section transmits to the second apparatus data stored at the address of the first buffer swapped between the first management information and the second management information.

Relay apparatus and relay method

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 control apparatus includes a processor. The processor determines, upon detecting a read error on a first volume of a storage under a non-equivalent state, a first storage area in which the read error has occurred. The first storage area is included in the first volume. The processor determines whether a write process has been conducted on the first storage area under the non-equivalent state. The processor determines whether a write process has been conducted on a second storage area under the non-equivalent state. The second storage area is included in a second volume of a storage and corresponds to the first storage area. The processor copies data stored in the second storage area to the first storage area when no write process has been conducted on the first storage area and the second storage area under the non-equivalent state.

Control apparatus, control method, and storage apparatus

A storage system includes a first storage unit, a second storage unit and a controller to receive a write request for updated data to a first storage unit from the host and write the updated data into the first storage area, when the controller determines that there is not a free area in a storage area to be processed in the second storage unit, the controller changes the storage area to be processed to another storage area to be processed and instructs change of a storage area to be processed to another storage system to be connected to the host, and the controller reads the updated data from the first storage unit and transmits the updated data and writing destination information relating to the updated data to another storage system for backup.

Storage system and storage system network

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 connected to a storage device includes a storage module, a memory for storing data to be copied to the storage device, buffers for temporarily saving the data, redundantly, the saved data stored in one of the buffers being recoverable by the data stored in the rest of the buffers, and a control module for executing, storing the data of write request to the storage module and the memory, copying the data to the storage device, saving the data to the buffer when an using rate of the memory is greater than a predetermined rate, writing the saved data stored in the buffer to the memory when an using rate of the memory is not greater than the predetermined rate, detecting a failure of the buffers, and rebuilding the saved data stored in the one of the buffers based on an using state of the buffers.

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Kawasaki, Japan

Yoshinari Shinozaki