Fujitsu Corporation

Fujitsu Limied

Toshiharu Makida

Kiyoshi Sugioka

Joichi Bita

Jouichi Bita

Sawao Iwatani

Motohiro Sakai

Kazuyoshi Watanabe

Takahiro Yamauchi

Hiroki Kimura

Kota Iwadate

Natsumi Nakata

Shinya Hamano

A storage device includes a first memory having a first access speed, a second memory having a second access speed slower than the first access speed, and a processor coupled to the first memory and the second memory and configured to copy one or a plurality of first data blocks included in a plurality of data blocks stored in the first memory, to the second memory, determine whether a processing amount per unit of time in the first memory reaches a threshold value based on a limit value of the processing amount when the processor receives a read request of a second data block included in the first data blocks, and read the second data block from the first memory when the processing amount does not reach the threshold value, and read the second data block from the second memory when the processing amount reaches the threshold value.

Storage device, storage system, and storage control method

An information processing apparatus includes a storing device and a processor. The storing device stores associated segment information indicative of two or more display unit segments having common data forming display contents among a plurality of display unit segments included in a screen of the client terminal. The processor instructs, when an update occurs on the data forming the display contents on a first display unit segment among the plurality of display unit segments, the client terminal to update data forming the display contents to be displayed on a second display unit segment associated with the first display unit segment among the plurality of display unit segments by referring to the associated segment information stored in the storing device.

Information processing apparatus, screen displaying system, and non-transitory recording medium having storing therein program

A storage control apparatus including a memory and a processor coupled to the memory and the processor configured to execute a process, the process including storing, in the memory, management information including an operation history for a storage region of a storage device, specifying at certain timing, from the management information, a first operation that has been executed to set a configuration of the storage region to a configuration at the certain timing, determining a second operation from among operations, in the management information, that precede the execution of the first operation and that target the storage region, deleting the second operation from the management information, and transmitting the management information after the deletion to a management apparatus that manages a state of the storage region of the storage device.

Storage control apparatus, storage management system, and non-transitory computer-readable storage medium

A monitoring unit acquires load information on a Tier pool that includes therein a plurality of volumes. A maximum performance calculating unit calculates an entire bandwidth of the Tier pool on the basis of the load information on the Tier pool acquired by the monitoring unit. A bandwidth management unit calculates each individual bandwidth such that the sum of the individual bandwidths allocated to each of the volumes corresponds to the entire bandwidth calculated by the maximum performance calculating unit and allocates each of the calculated individual bandwidths to each of the volumes.

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

An operation management server that manages a storage apparatus in which volumes are included and data is sent and received via transmission resources is provided. The operation management server includes a setting unit that sets a target value of the performance to some or all of the volumes; a monitoring unit that monitors the load factor of the transmission resources; and a bandwidth management unit that specifies a target transmission resource on the basis of the load factor of the transmission resources, that decides, on the basis of the target value, bandwidth allocation of some of the volumes that use the specified transmission resource, and that instructs a bandwidth control unit in the storage apparatus to adjust the bandwidth on the basis of the decided bandwidth allocation.

Storage management device and control method

A reception unit receives an input of designation of a performance level for a volume. A target value calculation unit obtains a target value of performance of data transmission and reception with respect to the volume according to the input performance level. A setting unit sets the target value obtained by the target value calculation unit for the volume. A monitoring unit monitors a load factor of a transmission resource. A bandwidth management unit identifies a target transmission resource based on the load factor of the transmission resource, decides a bandwidth allocation to a memory unit that uses the target transmission resource based on the target value, and instructs a bandwidth control unit of a storage device to tune the bandwidth using the decided bandwidth allocation.

Storage management device, and performance tuning method

A monitoring unit acquires load information on a Tier pool that includes therein a plurality of volumes. A maximum performance calculating unit calculates, on the basis of the load information on the volumes acquired by the monitoring unit, an entire bandwidth of the Tier pool. A bandwidth management unit calculates, on the basis of the minimum guarantee bandwidth for each of the predetermined volumes, each of individual bandwidths such that the sum total of the individual bandwidths allocated to the respective volumes corresponds to the entire bandwidth calculated by the maximum performance calculating unitand allocates the calculated individual bandwidths to the respective volumes.

A guarantee value setting unit stores therein a guarantee value of data send/receive performance with respect to a predetermined volume in a plurality of volumes held by a storage device. A bandwidth management unit calculates an interim target value on the basis of a comparison result between the guarantee value and an actual measurement value of the data send/receive performance with respect to the predetermined volume, allocates, on the basis of the interim target value, a bandwidth that compensates a difference between the guarantee value and the actual measurement value with respect to the predetermined storage area, and determines band distribution with respect to each of the volumes, and instructs the storage device to adjust the bandwidth in accordance with the determined band distribution.

Storage management device, performance adjustment method, and computer-readable recording medium

A receiving unit receives an input of information of a performance level with respect to a volume that is allocated by using different types of disks. A target value calculating unit calculates, on the basis of a distribution ratio that is previously determined for each type of the disks, a target value of the performance of sending and receiving data to and from the volume. On the basis of the target value calculated by the target value calculating unit, a performance management unit determines a distribution ratio for each type of the disks allocated to the volume, determines a band distribution with respect to the volume, and instructs the storage device to re-allocate the volume by using the determined distribution ratio and adjust the bandwidth in accordance with the determined band distribution.

An operational management server manages a storage device that includes a plurality of types of disks having different performances. A setting unit sets a target value of a performance to a volume produced by using the different types of the disks. An allocation rate management unit determines allocation rates of the respective types of the disks included in the volume on the basis of the target value set by the setting unit, and instructs the storage device to reproduce the volume in accordance with the determined allocation rates.

Growing community of inventors

Numazu, Japan

Toshiharu Makida