Hitachi, Ltd.

Tomoyuki Kato

Kenji Yamagami

Masanobu Yamamoto

Kei Sato

Kashie Araki

Yutaka Takata

Kenji Sekine

Yoshinori Igarashi

Masami Maeda

Kazuhide Sano

Koichi Hori

Ken Tokoro

Yuta Kajiwara

Yuko Nabekura

A computer system has a storage system including a first port and a second port, and a relay apparatus which couples the first port to an initiator apparatus. The storage apparatus stores relay apparatus information indicating a relay apparatus, and initiator information indicating an initiator apparatus. The storage apparatus establishes communications between the first port and a first relay apparatus, and based on communications with the relay apparatus recognizes the initiator apparatus with which the first relay apparatus has established communications. The storage apparatus also stores, in pathway information, a first pathway containing the first port, the first relay apparatus and the initiator apparatus. The storage apparatus creates a virtual port, which is a virtual port to which the first port is allocated, and when an initiator apparatus establishes communications with the virtual port, this apparatus adds a first virtual port associated pathway, in which the virtual port is associated with the first pathway, to the pathway information.

Computer system, storage apparatus and control method

Provided are a storage apparatus and data management method with which the usage ratio of each of the storage tiers is determined beforehand for each virtual volume and data can be managed by being migrated between storage tiers within a range of predetermined usage ratios. A storage apparatus, comprising storage devicesof a plurality of types of varying performance; and a controllerwhich manages each of storage areas provided by the storage devicesof a plurality of types by means of storage tiers ST of a plurality of different types respectively, and which assigns the storage areas in page units to virtual volumes VVOL from any storage tier among the storage tiers ST of a plurality of types, the controllermanaging usage ratios of the storage tiers ST of a plurality of types and assigning the storage areas in page units to the virtual volumes VVOL based on the usage ratio managed.

Storage apparatus and data management method for storage area allocation based on access frequency

A storage system, method and program product, the system comprising: storage devices; and a controller configured to: provide virtual volumes to a host computer; manage logical units on the storage device and storage pools; allocate, in response to receiving a write request to a virtual volume, a storage region of the storage pools; and store data related to the write request in the storage region allocated, wherein the controller is further configured to: allocate first storage region in first storage pool to first virtual volume based on first size of the first storage region or the first virtual volume; allocate a second storage region in a second storage pool to a second virtual volume of the plurality of virtual volumes based on a second size of the second storage region or the second virtual volume.

Systems and methods of allocating storage regions to virtual regions

This invention proposes a computing system and a backup method capable of improving the backup efficiency. In accordance with copy requests from the host, the data written to the first logical volume in the first storage system is copied to the second logical volume in the first storage system, the data copied to the second logical volume is used to form a journal and is transferred to the second storage system asynchronously, with the writing of data from the host to the first logical volume. In the second storage system, the data transferred from the first storage system is written to the third logical volume in the second storage system.

Computing system and backup method

Storage apparatus and storage area allocation method

This storage apparatus has a plurality of physical devices for storing data sent from a host system, and includes a physical device group setting unit for setting a physical device group from the plurality of physical devices based on a policy file which lists matters to be operated and set by an administrator as parameters in advance, and information on the physical devices, a first logical device setting unit for setting a first logical device from the physical device group based on information on the physical device group and the policy file set with the physical device group setting unit, and a second logical device setting unit for setting a second logical device from the first logical device based the information on the first logical device and the policy file set with the first logical device setting unit.

Storage apparatus and configuration setting method

A storage apparatus is provided with a storage area for storing data sent from a host computer, and a virtual/logical volume to which a dynamically variable storage area is allocated from within the storage area, the volume being provided to the host computer, and this storage apparatus is configured to include: a pool area generation unit for generating a plurality of pool areas composed from the storage area; a setting unit for setting, for each of the plurality of pool areas generated by the pool area generation unit, an allocation unit size for allocating a storage area from within the storage area provided by the pool area to the virtual/logical volume; a selecting unit for selecting, when data to be stored in the storage area is sent from the host computer, a pool area from among the plurality of pool areas having the allocation unit size set by the setting unit, in accordance with the size of the sent data; and an allocation unit for allocating a storage area from within the storage area provided by the pool area selected by the selecting unit to the virtual/logical volume.

Storage system and storage area allocation method configuring pool areas each including logical volumes having identical allocation unit size

An information processing device is provided which is capable of automatically initializing external apparatuses, when external apparatuses are connected thereto. A storage area for storing information identifying the type of external device connected to the information processing device and information identifying the characteristics of the external device is provided, and the external device connected is determined provisionally from information relating to the characteristics of an external device stored in the storage area, in cases where an external device of a type which is not present in the information processing device is detected.

Growing community of inventors

Odawara, Japan

Tomoyuki Kato