Fujitsu Corporation

Joichi Bita

Toshiharu Makida

Kiyoshi Sugioka

Daiya Nakamura

Masayoshi Mizumaki

Takahiro Yamauchi

Masanori Honda

Takeshi Hirade

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

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 storage apparatus includes a processor. The processor calculates an upper limit of an input/output processing amount, which is determined based on priority levels set to a plurality of storage devices, for each storage device. The processor schedules an execution sequence of processes relating to input/output requests received from information processing apparatuses based on processing amounts relating to the input/output requests and the upper limits. The processor executes the processes relating to the input/output requests in the scheduled execution sequence. The processor is configured to determine, for each storage device, whether or not a processing amount of the storage device exceeds a processing bandwidth of the each storage device for a first predetermined time. The processor changes the upper limit for each storage device in a predetermined bandwidth accommodation unit in a case where the processing amount for each storage device is determined to exceed the processing bandwidth.

Storage apparatus, method of controlling storage apparatus, and computer-readable recording medium having stored therein storage apparatus control program

A storage device includes a memory; and a processor coupled to the memory, wherein the processor executes a process comprising: calculating an upper limit value of the number of input/output processings determined based on priority set to an information processing device, a port that is an interface between the information processing device and the storage device and a memory device of the storage device; scheduling an execution order of input/output processings based on the number of input/output processings received from the information processing device and the calculated upper limit value; and executing the input/output processings in the scheduled execution order.

Storage device, and storage device control method

Provided are a processor generates second notification information by copying first notification information including target information about all communication adaptors in a storage apparatus; updates the first notification information, upon configuration information on the communication adaptors being modified; updates, when receiving a target information obtainment request, the second notification information with second notification information; blocks, when a predetermined copy prevention condition is met, copy of the first notification information to the second notification information; and sends, when receiving the target information obtainment request, the second notification information to the host apparatus, thereby, the load for notifying notification information to the host apparatus can be reduced, as well as preventing any inconsistency in notifying the notification information.

Storage apparatus, controller, and method of controlling controller

A storage and a controller each include an assignment number-managing unit for managing the number of command-processing resources assigned corresponding to a command-sending/receiving pair in combination of an external device and a logical device receiving a data input/output-requiring command; and an assignment-controlling unit for assigning the data input/output-requiring command to the command-processing resource corresponding to the command-sending/receiving pair, the number of the command-processing resources being equal to or lower than the number to be assigned that is managed by the assignment number-managing unit.

Storage device and control unit

A storage control deviceA includes a host interface control unit, a storage control firmware A, and electrically rewritable non-volatile memoryand, using non-volatile memory, stores necessary information during exchange of an activation program of the storage control firmware A, and using the information exchanges the activation program without disconnection to a hostand without erroneous response to a command from the host

Storage device, storage control firmware activation program exchange method, and program product for activating and exchanging storage control program

A storage control apparatus controls physical disks according to the host access using a pair of controllers, while mirroring processing is decreased when data is written to a cache memory and high-speed operation is enabled. The mirror management table is created with allocating the mirror area of the cache memory of the other controller, and acquisition of a mirror page of the cache memory of the other controller is executed referring to the mirror management table without an exchange of mirror page acquisition messages between the controllers.

Growing community of inventors

Kahoku, Japan

Joichi Bita