Abstract: A computer system of the present invention selects and executes an appropriate action in a case where capacity of a pool that provides a real storage area to a virtual logical volume is insufficient. A management computer determines, based on a utilization status of each pool, whether or not there exists a prescribed pool that requires pool size expansion. The management computer, in a case where the prescribed pool is detected, selects at least any one of a volume addition method for adding an unused real volume to the prescribed pool and a data migration method for migrating data of the virtual logical volume to another pool other than the prescribed pool, and expands a pool size of the prescribed pool in accordance with the selected method.

Abstract: A pool is replicated in the unit of volume providing the pool, and when a physical device is blocked, any volume blocked in the pool is changed to the replicated volume so that the pool and a virtual volume can be recovered. With such a configuration, when any pool or virtual volume is blocked due to blockage of any volume providing the thin provisioning function, volume recovery can be swiftly performed without changing the virtual volume used by a host computer, and consumption of storage resources needed therefor can be suppressed.

Abstract: The system of the present invention enhances the security of settings and operations in a storage device, and copes with numerous changes of the operational status of work executed within a computer system. When it becomes necessary to issue an operating command to the storage, storage operation propriety is determined on the basis of the operational status of the work and definition of operation permission for each work operation state.

Abstract: The invention provides a method for computing the appropriate capacity of a journal volume based on the operating patterns of backup and recovery performed by the user, and composing a recovery system that enables recovery to be performed in a short time using journals.

Abstract: A physical storage area that is allocated to an unused area of a virtual volume is removed. A management unit sends a request to a server computer to make every piece of data stored in a first logical volume migrate to a second logical volume. The server reads all the data out of the first logical volume and writes the data in the second logical volume. A storage system that includes the first logical volume and the second logical volume allocates a physical storage area to an area of the second logical volume where the data is to be written, and writes the data in the allocated physical storage area. The storage system then deletes the first logical volume.

Abstract: A management system is coupled to a storage system group including a scale-out storage system (a virtual storage system). The management system has storage management information, which includes information denoting, for each storage system, whether or not a storage system is a component of a virtual storage system. The management system, based on the storage management information, determines whether or not a first storage system is a component of a virtual storage system, and in a case where the result of this determination is affirmative, identifies, based on the storage management information, a second storage system, which is a storage system other than the virtual storage system that includes the first storage system, and allows a user to perform a specific operation only with respect to this second storage system.

Abstract: A control device of a storage system that includes a plurality of storage devices including a first type of storage device, including: a memory which stores an archive deadline of archive target data which are a target of archiving by the storage system and a warranty deadline which is a quality warranty deadline of parity groups configured by two or more of the first type of storage devices; a controller which stores the archive target data in the parity groups configured by two or more of the first type of storage device, and wherein the parity group storing the archive target data is a parity group whose warranty deadline is near the archive deadline of the archive target data, among a plurality of the parity groups.

Abstract: A management system, which manages a host computer and a storage system, holds cluster information, specifies an active-state host computer and an inactive-state host computer based on a backup instruction specifying a virtual host identifier, determines the need for executing a replication for disaster recovery use, and when necessary, executes this replication for disaster recovery use in combination with a replication for backup use.

Abstract: Provided is a computer system, comprising a storage system and a management computer. The management computer manages differential copy start times, differential data amounts of first pairs, and a data amount that can be copied in differential copy per unit time; identifies one of the first pairs for which the differential copy is to be started and a start time of the differential copy; subtracts the data amount of differential copy per unit time that is allocated to the identified one of the first pairs from a differential data amount of the identified first pairs; add the unit time to the identified start time; judges that the differential copy has been finished at a time when the subtracted differential data amount reaches zero or less; and calculates time zones in which the first pairs execute differential copy based on the time at which differential copy has been finished.

Abstract: A second storage system comprises a restore control unit for controlling restoration processing, in which a data element in a journal stored in a journal storage area is written into a secondary logical volume, and a storage device control unit for controlling a storage device in the second storage system. The restore control unit is provided with a function for suspending the restoration processing. A first value indicating the usage condition of the journal storage area in the second storage system is obtained, and the restore control unit suspends the restoration processing in accordance with the obtained first value. The storage device control unit then executes power saving on a storage device relating to the secondary logical volume.

Abstract: A management system, which manages a host computer and a storage system, holds cluster information, specifies an active-state host computer and an inactive-state host computer based on a backup instruction specifying a virtual host identifier, determines the need for executing a replication for disaster recovery use, and when necessary, executes this replication for disaster recovery use in combination with a replication for backup use.

Abstract: Operation of an environment that supports both host-based replication and array-based replication is realized. According to the present invention, data in the first storage area is copied first to the second storage area using an array-based replication engine. In this case, the execution result of the replication is managed using a flag from which the copy timing can be known. In addition, data in the first storage area is copied to the third storage area using a host-based replication engine, and further, data in the third storage area is copied to the fourth storage area. Then, when data in the second storage area is restored to the first storage area, data in the fourth storage area is returned to the third storage area so that the third storage area has data of the same time as the second storage area (see FIG. 12).

Abstract: The object of the present invention is to prevent distribution of a storage range to a volume from an inappropriate disk drive based on use of the volume as a result of an automatic extension of a volume capacity. A computer system has a storage system including a physical storage device, a host computer, and a management computer. The storage system includes a plurality of kinds of physical storage devices physically dividing into two segments or more the volume and records as constitution information the correspondence between each segment and the volume using the segment. And the storage system records the kind of physical storage device to be allocated to the volume and selects the physical storage device according to the kind of stored physical storage device for allocation of the segment when the host computer performs an I/O access to the volume. Access frequency is monitored and data is copied based on the monitored access frequency.

Abstract: A storage system comprising a storage apparatus having a storage control unit communicatively coupled to an external apparatus, forming a plurality of virtual storage areas each serving as a unit storage area used by the external apparatus as a data storing area, using a unit logical storage area selected among a plurality of unit logical storage areas provided by a physical storage medium, linking to each of the virtual storage areas, and any one of a plurality of attributes each representing a storage state of data stored in the virtual storage area, and maintaining the link wherein the storage control unit 11 further includes a logical storage area management unit 1140 that manages the link of the virtual storage area and any one of the attributes to each of logical storage area groups each configured to include the unit logical storage area to maintain the link and manage the linking relation, wherein the logical storage area management unit 1140, when receiving a command to change an attribute of any one

Abstract: Conventionally, no consideration was given to the control of the main power supply circuit in a storage apparatus. Thus, unnecessary electric power will be consumed because it is not possible to inhibit the power consumption of the main power supply circuit of the storage apparatus. With this storage system having a plurality of storage apparatuses, a storage apparatus internally has a power supply control program for controlling the respective components and the main power supply circuit, and the power supply control command program provided to the management computer migrates a storage extent to be used for business to another storage apparatus based on the operation schedule of business to use the storage extent of the storage apparatus, and commands the power supply control of the main power supply circuit in the storage apparatuses and the respective components.

Abstract: Provided is a storage device which partitions data from a host into multiple partitioned data and distributes, encrypts and stores them together with a parity to and in multiple memory mediums. This storage device executes processing of restoring the partitioned data or the parity stored in a memory medium to be subject to encryption re-key based on decrypted data of the partitioned data or the parity stored in each memory medium other than the memory medium to be subject to encryption re-key among the multiple memory mediums, storing the restored partitioned data or the parity in a backup memory medium while encrypting the restored partitioned data or the parity with a new encryption key, and thereafter interchanging the backup memory medium and the memory medium to be subject to encryption re-key so that the backup memory medium will be a memory medium configuring the parity group and the memory medium to be subject to encryption re-key will be the backup memory medium.

Abstract: An object of the present invention is to provide a storage system and storage management method, which prevent a problem in the operation of stored data from being caused by unknown states of volume information and life information, when flash memories are placed in off-line mode and again placed in on-line mode.

Abstract: Provided is a computer system which is capable of backup operation with a minimum count of volumes in a remote copy environment when a disaster or the like causes a storage system to stop working normally. The computer system has a host computer, a first storage system, a second storage system, and a management computer. The first storage system contains a data volume which stores data requested by an application to be written. The second storage system contains a mirrored volume to which data stored in the data volume is copied. The computer system is characterized by being configured to receive an input of a policy about backup processing executed in backup volumes and set a configuration of the first storage system and a configuration of the second storage system under the received policy.

Abstract: A storage management program is provided with a function of determining a suspension/continuation of a remote backup based on an operation-at-failure management table, and accomplishes the suspension/continuation of the backup based on the application in which a failure has occurred and the mode of this failure. The storage management program is also provided with a function of computing a change in the quantity of data from the last backup before the occurrence of the failure until the first backup after the occurrence of the failure, and determining the suspension/continuation of the backup, enabling to suspend/continue the backup in line with the operating status of the application.

Abstract: A management computer monitors an allocated capacity of a source virtual volume and an allocated capacity of a virtual pool having a storage area allocated to a destination virtual volume in a storage, judges whether the allocated capacity of the source virtual volume can be covered in the virtual pool or not, and informs the user of a result that data migration fails when the allocated capacity of the source virtual volume cannot be covered. When the allocated capacity of the source virtual volume cannot be covered, the management computer uses another storage area to increase the capacity of the virtual pool. Accordingly, when data migration is performed between the virtual volumes, capacities of physical areas allocated to the source virtual volume and the destination virtual volume can be grasped so that the data migration can be performed accurately between the source virtual volume and the destination virtual volume.