Hitachi, Ltd.

Naohisa Kasako

Toru Suzuki

Shuji Kondo

Takeshi Koide

Shigeru Kishiro

Takahiko Takeda

Misako Tamura

Sachiko Hinata

A first controller defines an existing pair that represents a copy from a first existing area that is a storage area of a first logical volume before size expansion to a second existing area that is a storage area of a second logical volume before size expansion, maintains the existing pair in a synchronous state, which is a state where the second existing area is in synchronization with the first existing area, and expands the size of the first logical volume by adding a first expansion area using a first storage device to the first logical volume during the synchronous state, and the second controller adds a second expansion area using a second storage device to the second logical volume after the size of the first logical volume is expanded, and writes data written to the first expansion area to the second expansion area.

Storage system and control method for storage system

A storage apparatusimplements Thin Provisioning functions by allocating a storage area of a physical driveto a logical page in units of a physical page, the physical drivebeing managed as a storage pool, the logical page being a management unit of a storage area of a virtual volume; performs tier arrangement processing to replicate data stored in a migration source physical page to a migration destination physical page; and performs replacement processing for the physical driveupon receipt of a request to replace the physical drivein units of a physical device (PDEV). In performing the replacement processing for the physical drive, when a first processing mode is designated as tier arrangement processing mode, the storage apparatuscancels start of the tier arrangement processing, and then starts the replacement processing.

Storage apparatus and method for controlling storage apparatus

It is an object of the present invention to conduct data transfer or data copying between a plurality of storage systems, without affecting the host computer of the storage systems. Two or more auxiliary storage systemsB,C are connected to a primary storage systemA connected to a host device. The auxiliary storage systemsB,C read journals of data update from the primary storage systemA at respective independent timings, save the journals in prescribed logical volumes JNL 2, JNL 3, produce copying of the data present in the primary storage systemA based on the journals present in the logical volumes JNL 2, JNL 3 at the independent timings, and save the copies in auxiliary logical volumes COPY 1, COPY 3. The primary storage systemA holds the journals till both auxiliary storage systemsB,C read the journals and restore. The timing of journal read can be controlled according to the journal quantity, processing load, and the like.

Data processing system having a plurality of storage systems

Provided is a storage apparatus capable of encrypting data without affecting the business performance. This storage apparatus includes a cache memory, a first controller for controlling the writing of data in the cache memory pursuant to the write command, a second controller for controlling the writing of the data written in the cache into the storage devices, and an encryption engine for encrypting data pursuant to the write command. When the second controller reads the data from the cache memory and writes the data in said storage devices, the encryption engine encrypts the data, and the second controller writes the encrypted data in said storage devices.

Storage apparatus

A storage device system includes an information processing device, a first storage device equipped with a first storage volume, and a second storage device equipped with a second storage volume. The information processing device and the first storage device are communicatively connected to one another. Also, the first storage device and the second storage device are communicatively connected to one another. The information processing device is equipped with a first write request section that requests to write data in the first storage device according to a first communications protocol, and a second write request section that requests to write data in the second storage device according to a second communications protocol. The information processing device creates first data including a first instruction to be executed in the second storage device.

Remote storage disk control device and method for controlling the same

It is an object of the present invention to conduct data transfer or data copying between a plurality of storage systems, without affecting the host computer of the storage systems. Two or more auxiliary storage systemsB,C are connected to a primary storage systemA connected to a host device. The auxiliary storage systemsB,C read journals of data update from the primary storage systemA at respective independent timings, save the journals in prescribed logical volumes JNL, JNL, produce copying of the data present in the primary storage systemA based on the journals present in the logical volumes JNL, JNLat the independent timings, and save the copies in auxiliary logical volumes COPY, COPY. The primary storage systemA holds the journals till both auxiliary storage systemsB,C read the journals and restore. The timing of journal read can be controlled according to the journal quantity, processing load, and the like.

A storage device system includes an information processing device and at least first and second storage devices. The first and second storage devices are equipped with first and second storage volumes, respectively. The information processing device generates first data including a first instruction that is to be executed by the second storage device, and sends a write request to a first write request section to write the first data according to a first communications protocol in the first storage volume. When the first data written in the first storage volume is the command to be executed by the second storage device, the first storage device sends to a second write request section a write request to write the first data according to a second communications protocol in the second storage volume. The second storage device executes the first command set in the first data that is written in the second storage volume.

Remote storage disk control device with function to transfer commands to remote storage devices

A storage device system includes an information processing device, a first storage device equipped with a first storage volume, and a second storage device equipped with a second storage volume. The information processing device and the first storage device are communicatively connected to one another. Also, the first storage device and the second storage device are communicatively connected to one another. The information processing device is equipped with a first write request section that requests to write data in the first storage device according to a first communications protocol, and a second write request section that requests to write data in the second storage device according to a second communications protocol. The information processing device creates first data including a first instruction to be Executed in the second storage device. The information processing device transmits to the first write request section a request to write the first data in the first storage volume according to the first communications protocol. When the first data written in the first storage volume is an instruction to the second storage device, the first storage device transmits to the second write request section a request to write the first data in the second storage volume according to the second communications protocol. The second storage device executes the first instruction set in the first data written in the second storage volume.

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Odawara, Japan

Naohisa Kasako