Abstract: A computer system that is composed of a host computer, a storage device and a management computer. The storage device comprises a port for connecting with the host computer, a cache memory, a processor, and a plurality of logic volumes which are logical memory regions. For each logic volume, the port, the cache memory and the processor are divided into logic partitions, as resources that are used for reading and writing in the logic volume. The host computer reads and writes with respect to the logic volumes. If a failure occurs in the storage device, the management computer issues a command to the storage device to allocate the resources of a logic partition for which reading/writing performance is not ensured to a logic partition for which reading/writing performance is ensured.

Abstract: In a scale-out type storage in which multiple physical storage systems are provided collectively as a single virtual storage system, a logical path is established between the host computer and the virtual storage system so that input/output performance of the storage is not deteriorated, wherein during allocation of a volume to the virtual storage system, if a logical CU establishing a logical path to a volume is unallocated, a logical CU and a volume is generated to a storage system having either a small number of allocated logical CUs or a small amount of used storage capacity. On the other hand, if there is a storage system having a logical CU already allocated thereto, a volume is generated in that storage system.

Abstract: An encryption key used with a storing apparatus and an encryption key used with a non-volatile cache memory are identical to each other. A cache control portion unit effects control in such a way that an encryption key EK used to encrypt first data stored in the storing apparatuses, and an encryption key EK used to encrypt second data which are data corresponding to the first data and are stored in the non-volatile cache memory, are identical to each other. If the cache control portion receives a write request and first data WD, the cache control portion identifies from the storing apparatuses a storing apparatus that is to be the storage destination of the first data, identifies an encryption key allocated to the identified storing apparatus, encrypts the second data corresponding to the first data using the identified encryption key, and stores the data in the non-volatile cache memory.

Abstract: Provided is a control method for a plurality of storage apparatuses that perform a migration from a pre-migration volume group to a post-migration volume group. The plurality of storage apparatuses are configured to accept a write command directed to any one of a plurality of volumes in the pre-migration volume group and the post-migration volume group when the migration is being processed. The control method includes writing write data of the write command to all of the plurality of volumes in a predetermined order, writing the write data to a last volume last among the plurality of volumes, and writing the write data to volumes different from the last volume after individually obtaining exclusive locks and, after completion of the writing the write data to the last volume, releasing the exclusive locks.

Abstract: A management computer is configured to: receive indication information which indicates creating a logical partition and which includes information on performance for processing an input/output instruction required by the logical partition to be created; identify a computer resource newly allocatable to a logical partition in each of a plurality of physical storage apparatuses; and issue, when there is no physical storage apparatus capable of independently creating the logical partition, to the plurality of physical storage apparatuses an indication to create a logical partition which straddles a plurality of physical storage apparatuses and to which a computer resource for satisfying the performance for processing an input/output instruction and a computer resource for transferring an input/output instruction among the physical storage apparatuses are allocated.

Abstract: A storage system, which comprises multiple memory cells and a storage controller, wherein the storage controller manages cell mode information, which either directly or indirectly denotes the number of bits to be stored in multiple memory cells. The cell mode information can be changed in accordance with a request from a management system.

Abstract: According to the present invention, it is possible to construct a backup configuration of a particular application data, without influencing data of another application. A management computer is coupled to a host computer on which an application operates, and to a storage apparatus that includes a plurality of volume groups each having one or more logical volumes. At least one of the logical volumes is allocated to the application. The management computer includes a volume group overlapping use determination part and a backup policy determination part. When the backup of the volume group to which one logical volume belongs is configured, the volume group overlapping use determination part determines whether there is another application that uses the volume group. The backup policy determination part determines whether there is set, for another volume group, backup policy information same as that set for the application.

Abstract: In a storage system 1, a storage apparatus A having a first pool 1430 including segments as unit storage areas and a storage apparatus B having a second pool 1430 having the same configuration are communicably connected to each other. In the storage system, an external volume identifier is associated with a logical volume 1420 included in the first pool 1430, the external volume identifier being used by a controller 1500 in the storage apparatus B to identify and manage the logical volume 1420 as an external volume 1425 that is a virtual volume in the storage apparatus B. Moreover, a volume identifier 5110 of the logical volume 1420 included in the first pool 1430 is rewritten into the external volume identifier in order to enable the storage apparatus B to utilize the logical volume 1420 created from the first pool 1430.

Abstract: A storage system 300a that has a volume, manages the volume as a plurality of logical volumes, and can operate as a plurality of logical storage systems having at least one logical volume. The storage system comprises an IO transmission-reception unit 1320a that communicates with a management computer 100, a host computer 200, and a storage system 300b and a processor 1310a that causes the IO transmission-reception unit 1320a to perform transmission to the management computer 100 and storage system 300b by using an identifier of the storage system 300a as an identifier indicating a representative logical storage system that is one predetermined logical storage system from among a plurality of the logical storage system when the storage system operates as a plurality of the logical storage systems.

Abstract: According to the present invention, it is possible to construct a backup configuration of a particular application data, without influencing data of another application. A management computer is coupled to a host computer on which an application operates, and to a storage apparatus that includes a plurality of volume groups each having one or more logical volumes. At least one of the logical volumes is allocated to the application. The management computer includes a volume group overlapping use determination part and a backup policy determination part. When the backup of the volume group to which one logical volume belongs is configured, the volume group overlapping use determination part determines whether there is another application that uses the volume group. The backup policy determination part determines whether there is set, for another volume group, backup policy information same as that set for the application.

Abstract: An embodiment of this invention is a storage management system including a processor and a storage device to manage a storage system having one or more copy functions. The processor locates data designated to determine a backup method. The storage device stores copy function management information on the one or more copy functions of the storage system. The processor refers to the copy function management information to ascertain the unit of copy operation of each of the one or more copy functions. The processor determines a candidate for a copy function of the storage system to be used to back up the designated data depending on the data configuration in a volume holding the designated data and the unit of copy operation of the candidate for the copy function.

Abstract: According to the present invention, it is possible to construct a backup configuration of a particular application data, without influencing data of another application. A management computer is coupled to a host computer on which an application operates, and to a storage apparatus that includes a plurality of volume groups each having one or more logical volumes. At least one of the logical volumes is allocated to the application. The management computer includes a volume group overlapping use determination part and a backup policy determination part. When the backup of the volume group to which one logical volume belongs is configured, the volume group overlapping use determination part determines whether there is another application that uses the volume group. The backup policy determination part determines whether there is set, for another volume group, backup policy information same as that set for the application.

Abstract: To provide a storage management technique for creating and managing, with single operation by a user, a large quantity of writable snapshots, which satisfy a requirement desired by the user, while controlling a use form of a storage apparatus not to exceed limits of the performance and the capacity of the storage apparatus. Therefore, a management computer manages configuration information and performance information of plural storage apparatuses and an operation state of a writable snapshot. When a writable snapshot is created, the management computer controls, concerning an original snapshot, a use form of the storage apparatuses not to exceed a disk performance limit and a controller performance limit and a capacity limit of a storage on the basis of the number of writable snapshots to be created and a performance requirement (IOPS) and a capacity requirement of the writable snapshot.

Abstract: A computer is coupled to a storage apparatus having a hierarchical pool with multiple storage tiers that are multiple page groups having different IO performance. Page data is migrated between storage tiers in accordance with a migration request. The computer has a storage device that stores performance requirement management information denoting a performance requirement of a task, which is an execution unit of a prescribed process, and IO performance information enabling identification of a difference in IO performance between the multiple storage tiers. A control device calculates an amount of change predicted in the task execution performance on supposition that one or more data objects for use in the task are to be migrated to a page in another storage tier, and identifies, based on the predicted amount of change, one or more data objects capable of being migrated to a page in another storage tier.

Abstract: A storage system 300a that has a volume, manages the volume as a plurality of logical volumes, and can operate as a plurality of logical storage systems having at least one logical volume. The storage system comprises an IO transmission-reception unit 1320a that communicates with a management computer 100, a host computer 200, and a storage system 300b and a processor 1310a that causes the IO transmission-reception unit 1320a to perform transmission to the management computer 100 and storage system 300b by using an identifier of the storage system 300a as an identifier indicating a representative logical storage system that is one predetermined logical storage system from among a plurality of the logical storage system when the storage system operates as a plurality of the logical storage systems.

Abstract: A management system for managing an acquisition of information on multiple resources by multiple information acquisition apparatuses configured to acquire information on the multiple resources based on an information acquisition indication, is configured. The management system stores information for specifying a resource group, which is a group of multiple resources targeted for acquiring information at the same time points. The management system sends to each of multiple information acquisition apparatuses, which acquire information on multiple resources of a certain resource group, an information acquisition indication defining a timing for acquiring information from the resource of the certain resource group so that the information acquired from the multiple resources of the certain resource group are information at approximately the same time points.

Abstract: According to the present invention, it is possible to construct a backup configuration of a particular application data, without influencing data of another application. A management computer is coupled to a host computer on which an application operates, and to a storage apparatus that includes a plurality of volume groups each having one or more logical volumes. At least one of the logical volumes is allocated to the application. The management computer includes a volume group overlapping use determination part and a backup policy determination part. When the backup of the volume group to which one logical volume belongs is configured, the volume group overlapping use determination part determines whether there is another application that uses the volume group. The backup policy determination part determines whether there is set, for another volume group, backup policy information same as that set for the application.

Abstract: A storage system 300a that has a volume, manages the volume as a plurality of logical volumes, and can operate as a plurality of logical storage systems having at least one logical volume. The storage system comprises an IO transmission-reception unit 1320a that communicates with a management computer 100, a host computer 200, and a storage system 300b and a processor 1310a that causes the IO transmission-reception unit 1320a to perform transmission to the management computer 100 and storage system 300b by using an identifier of the storage system 300a as an identifier indicating a representative logical storage system that is one predetermined logical storage system from among a plurality of the logical storage system when the storage system operates as a plurality of the logical storage systems.

Abstract: An embodiment of this invention is a storage management system including a processor and a storage device to manage a storage system having one or more copy functions. The processor locates data designated to determine a backup method. The storage device stores copy function management information on the one or more copy functions of the storage system. The processor refers to the copy function management information to ascertain the unit of copy operation of each of the one or more copy functions. The processor determines a candidate for a copy function of the storage system to be used to back up the designated data depending on the data configuration in a volume holding the designated data and the unit of copy operation of the candidate for the copy function.

Abstract: A storage system, which comprises multiple memory cells and a storage controller, wherein the storage controller manages cell mode information, which either directly or indirectly denotes the number of bits to be stored in multiple memory cells. The cell mode information can be changed in accordance with a request from a management system.