Abstract: A storage system includes a plurality of physical drives and a storage controller connected to the plurality of physical drives to provide one or more volumes. Two or more volume addresses, which are two or more logical addresses, belong to each of the one or more volumes. When copy target data, which is data to be copied, is copied in a volume or between volumes, the storage controller (A) determines whether a copy destination physical drive, which is a physical drive corresponding to a copy destination volume address, is identical to a copy source physical drive which is the destination physical drive corresponding to a copy source volume address, and (B) shifts a storage position of the copy target data such that the copy destination physical drive becomes a physical drive identical to the copy source physical drive if a determination result of (A) is false.

Abstract: According to one embodiment, a storage system includes a representative node and a plurality of general nodes including a plurality of resources. Each of the general nodes stores resource status information indicating respective statuses of the plurality of resources in a first storage unit thereof. The representative node stores resource status information collected from the plurality of general nodes in a second storage unit thereof, decides whether to acquire the resource status information from the first storage unit of the general node or to acquire the resource status information from the second storage unit based on a received request, and transmits the resource status information acquired from a decided acquisition destination to an issuing source of the request.

Abstract: A storage system according to an aspect of the present invention includes one or more storage devices for storing write data to which a write request from a host computer is directed, and a storage controller that provides one or more volumes to the host computer. Further, the storage system manages the time when a write request is last received from the host computer for each partition within the volume. Then, the storage controller performs a deduplication process upon detecting the partition not receiving a write request for a predetermined time or more from the time when the write request is last received.

Abstract: A storage system includes a plurality of nodes connected with a network and configured to provide volumes, a plurality of drive units; and a management system. Each of the plurality of drive units consists of a plurality of storage drives and is accessible from one or more of the plurality of nodes without intervention of the other nodes. The management system or one of the plurality of nodes is configured to determine number of storage drives to be included in a new distribution range to distribute data of a first volume based on access frequency to the first volume.

Abstract: A virtual storage system according to an aspect of the present invention includes multiple storage systems each including: a storage controller that accepts a read/write request for reading or writing from and to a logical volume; and multiple storage devices. The storage system defines a pool that manages the storage device capable of allocating any of storage areas to the logical volume, and manages the capacity (pool capacity) of the storage areas belonging to the pool, and the capacity (pool available capacity) of unused storage areas in the pool. Furthermore, the storage system calculates the total value of the pool available capacities of the storage systems included in the virtual storage system, and provides the server with the total value as the pool available capacity of the virtual storage system.

Abstract: An object of the present invention is to provide a redundant information processing system that can continue its operation without stopping as much as possible. To achieve this, the information processing system includes multiple storage nodes including processors, memories, and storage devices, as well as a network for connecting the storage nodes. The processor of at least one storage node performs the steps of: obtaining the configuration information of the information processing system; obtaining first failure information related to a first failure occurred in the information processing system; calculating the availability level of the information processing system when a second failure further occurs, based on the configuration information and the first failure information; and controlling the operation of the system based on the availability level. Then, the processor outputs a notification.

Abstract: According to one embodiment, a storage system includes a representative node and a plurality of general nodes including a plurality of resources. Each of the general nodes stores resource status information indicating respective statuses of the plurality of resources in a first storage unit thereof. The representative node stores resource status information collected from the plurality of general nodes in a second storage unit thereof, decides whether to acquire the resource status information from the first storage unit of the general node or to acquire the resource status information from the second storage unit based on a received request, and transmits the resource status information acquired from a decided acquisition destination to an issuing source of the request.

Abstract: According to one embodiment, a storage system includes a representative node and a plurality of general nodes including a plurality of resources. Each of the general nodes stores resource status information indicating respective statuses of the plurality of resources in a first storage unit thereof. The representative node stores resource status information collected from the plurality of general nodes in a second storage unit thereof, decides whether to acquire the resource status information from the first storage unit of the general node or to acquire the resource status information from the second storage unit based on a received request, and transmits the resource status information acquired from a decided acquisition destination to an issuing source of the request.

Abstract: A storage management server includes a memory storing management information and a management program and a processor executing the management program with reference to the management information, and manages a storage resource allocated to a server resource. The management information includes group mapping information for converting a first parameter of the server resource into a second parameter of the storage resource. The processor receives an operation on the server resource and the first parameter and converts the operation on the server resource into an operation on the storage resource based on preset information. The processor converts the first parameter of the server resource into the second parameter of the storage resource with reference to the group mapping information, specifies the storage resource included in the second parameter, and gives an instruction to operate the storage resource.

Abstract: In a computer system, when a first high availability (HA) pair is configured with a first logical device of a first storage apparatus and a second logical device of a second storage apparatus, the first logical device is virtualized on a third storage apparatus and is set to correspond with a third logical device of the third storage apparatus. A fourth storage apparatus virtualizes the second logical device and sets the second logical device to correspond with a fourth logical device of the fourth storage apparatus. After a second HA pair is configured with the third logical device and the fourth logical device, the data on the first logical device is migrated to the third storage apparatus and managed as data on the third logical device. The data on the second logical device is migrated to the fourth storage apparatus and managed as data on the fourth logical device.

Abstract: A storage system includes a first storage device and a second storage device having different performances. A processor manages a volume having a storage region to which a storage device is allocated and performs an input/output of data for the storage device via the volume, the processor calculates an input/output frequency relating to the input or/and the output of the data for each storage region and manages volume configuration relating to an allocation amount of each of the first and second storage devices to the volume, a management unit acquires the input/output frequency from the processor and generates distribution information of the input/output frequency for each volume, and the management unit determines performance of the volume on the basis of the distribution information of the input/output frequency in the volume and the volume configuration of the storage device of each performance to the volume.

Abstract: A virtual storage system according to an aspect of the present invention includes multiple storage systems each including: a storage controller that accepts a read/write request for reading or writing from and to a logical volume; and multiple storage devices. The storage system defines a pool that manages the storage device capable of allocating any of storage areas to the logical volume, and manages the capacity (pool capacity) of the storage areas belonging to the pool, and the capacity (pool available capacity) of unused storage areas in the pool. Furthermore, the storage system calculates the total value of the pool available capacities of the storage systems included in the virtual storage system, and provides the server with the total value as the pool available capacity of the virtual storage system.

Abstract: Saving a capacity of an on-premises storage apparatus, a high access performance of the on-premises storage apparatus, and resuming an operation quickly and accurately by using data on a cloud when a resource in the on-premises fails are achieved. A processor provides a first volume which is a virtual volume, and configures a copy pair of the first volume and a second volume provided from another storage system. Write data to the first volume is transferred to the second volume via a network, based on the copy pair. The processor writes to the memory a part of data written to the second volume, and writes to the storage device the data written to the memory.

Abstract: With omission of a duplication process of compressed data, a cache access frequency is reduced to improve throughput. A storage system includes first and second control units and a storage drive. Upon receiving a data write command, the first control unit stores data to be subjected to the write command in a first cache area of the first control unit, and stores the data in a second cache area of the second control unit to perform duplication, and upon completion of the duplication, the first control unit transmits a response indicating an end of write, performs a predetermined process on the data to be subjected to the write command, stores the data in a buffer area, reads the data stored in the buffer area, and transmits the read data to the storage drive.

Abstract: An active control program and a passive control program included in the same program cluster in a plurality of storage nodes are each arranged in the storage nodes different from each other. Each of the storage nodes is configured to include a plurality of active or passive control programs. When any one of the plurality of the passive control programs is switched to active, a change of an operation status is made for the different passive control program operating in the storage node that includes the passive control program switched to active.

Abstract: Each of a storage apparatus having a primary volume and a storage apparatus having a secondary volume, upon reception of a write command, changes a data attribute of a data area allocated to an address designated by the write command, to a first attribute if the data attribute is other than the first attribute. In an offloaded data copy processing sequence, each of the storage apparatus changes a data attribute of a data area allocated to a copy source address to a second attribute if the data attribute is other than the second attribute. When an allocation information copy process is to be performed to allocate the data area to a copy destination address according to an offloaded data copy command, each of the storage apparatus discontinues the offloaded data copy processing sequence if the data attribute of the data area is the first attribute.

Abstract: A source remote copy configuration in a source storage system is migrated to a destination storage system as a destination remote copy configuration. The destination primary storage apparatus of the destination storage system defines a virtual volume mapped to the primary volume provided by the source primary storage apparatus which is a storage area of the virtual volume; takes over a first identifier of the primary volume to the virtual volume; transfers, when the virtual volume receives an access request, the access request to the source primary storage apparatus to write data in the primary volume; and takes over the first identifier from the virtual volume to another primary volume provided by the destination primary storage apparatus, after completion of copy of data from primary volume of the source primary storage apparatus into primary volume of the destination primary storage apparatus and secondary volume of the destination secondary storage apparatus.

Abstract: When a real area is allocated to a write destination virtual area in a virtual volume, a storage device determines whether or not a size of compressed new data is larger than a size of the allocated real area. In a case where the determination result is true, the storage device determines whether or not there is one or more real areas having a size equal to or larger than the size of the compressed new data and including a garbage area that is a real area serving as garbage. In a case where the determination result is true, the storage device selects one or more real areas including the garbage area, allocates, instead of the allocated real area, the selected one or more real areas to the write destination virtual area, and manages the allocated real area as a garbage area.

Abstract: Saving a capacity of an on-premises storage apparatus, a high access performance of the on-premises storage apparatus, and resuming an operation quickly and accurately by using data on a cloud when a resource in the on-premises fails are achieved. A processor provides a first volume which is a virtual volume, and configures a copy pair of the first volume and a second volume provided from another storage system. Write data to the first volume is transferred to the second volume via a network, based on the copy pair. The processor writes to the memory a part of data written to the second volume, and writes to the storage device the data written to the memory.

Abstract: A method for restoring lost data due to a failure of a storage drive is provided, including: selecting a first logical area of a first storage drive that is failed; specifying a first logical area line that includes the first logical area and logical area blocks of a different storage drive and stores a data set having a redundant configuration capable of restoring lost internal data; selecting, from the first logical area line, one or more second logical areas to be accessed for restoring data of the first logical area; and for each of one or more second storage drives that provides the one or more second logical areas respectively, issuing a data storage information request inquiring whether valid data is stored after designating the second logical areas.