摘要:
A first storage device control device stores, when a first data write/read request is received, correspondences between first logical units and second logical units referenced when determining whether or not storage regions identified by first logical units set in the request are storage regions of the first logical device control device or storage regions of a second storage device control device, the second storage device control device transmits all or some of identification information (logical unit information) of the second logical units to a management computer, the first storage device control device transmits all or some of the correspondences (mapping information) to the management computer, and the management computer references the received logical unit information and the mapping information to generate information representing whether or not the second logical units are corresponded to the first logical units.
摘要:
A subsystem logics partitioning and managing apparatus comprises a recognition unit for recognizing logical and physical resources that constitute a subsystem a partition definition table in which the logical and physical resources in the subsystem are assigned for each user at an interface level at which a storage configuration can be referenced by a storage management program an account table in which an account is set for each user-specific partition defined in the partition definition table a receiving unit for receiving a user account transmitted from an information processing unit and checking the received user account against the account table, to recognize a partition that corresponds to the user and a unit for outputting, at a GUI level, logical resources and physical resources that are contained in the recognized partition to an output interface as a resource configuration in the subsystem.
摘要:
Reduction of the initial investment cost of a user of a storage system can be realized, and the user of the storage system can easily perform timely addition for a short time. In a preferred embodiment, a method for renting and charging the storage system includes the steps of: reading a used volume from a use management table held in the storage system; and sending the read used volume from the storage system to a charging system. Preferably, the storage system has means for allowing an owner to grasp that a user starts using the storage system, wherein the owner rents to the user a storage system having a disk volume, a cache volume, and other components more than the user's increase intension, charges for a used volume of the user for a fixed period, and reviews the added volume and the charged cost on the fixed period basis.
摘要:
A disk array subsystem includes a logical volume allocation controller, which divides and reallocates data of the same logical volume LVN among a plurality of magnetic disk drive groups when a magnetic disk group is added thereto. Successful logical-volume allocation can reduce the I/O processing frequency between magnetic disk drive groups, thus achieving enhanced performance of the disk array subsystem.
摘要:
Arrangements including a duplication determination unit that determines whether identical contents intrinsic values are contained in a plurality of contents intrinsic values; a change control unit that changes an access destination of a first file corresponding to a first contents intrinsic value from identical contents intrinsic values, to a position having stored therein a second file corresponding to a second contents intrinsic value from among these identical contents intrinsic values when there are identical contents intrinsic values; and, a migration execution unit which, when the migration execution unit migrates data stored in files stored in one or more first logical storage devices to one or more second logical storage devices, does not migrate first data of the first file to any of the one or more second logical storage devices, and migrates second data of the second file to any of the one or more second logical storage devices.
摘要:
There is provided a storage system including a file server connecting to a computer over a network and a storage apparatus connecting to the file server connecting over the network, wherein the file server includes a first controller, the storage apparatus includes multiple storage devices having multiple storage areas and a second controller that controls accesses to the multiple storage areas, each of the multiple storage areas has at least one power saving mode among multiple power saving modes with different shift times from the power saving modes to a ready mode, the first controller, in response to the reception of data from the computer, sets an indicator relating to the performance of response to an access from the computer to the data and refers to the indicator of the data and selects a first storage area having the power saving mode satisfying the indicator, and the second controller stores the data to the first storage area.
摘要:
In a storage apparatus and its control method including multiple first virtual volumes to be provided to a host system and multiple pools each having a memory capacity, and equipped with a function of dynamically allocating a storage area to the first virtual volumes from the pools associated with the first virtual volumes in accordance with the usage status of the first virtual volumes, the unused capacity in each of the pools is managed, and, when the unused capacity of one of the pools falls below a predetermined threshold value, a part of the unused capacity of the other pools is allocated to the one pool. It is thereby possible to realize a highly reliable storage apparatus and its control method.
摘要:
A method for controlling a storage system including a host computer, and a first and a second storage control apparatuses each receiving a data input/output request from the host computer and executing a data input/output process for a storage device in response to the request, comprises connecting a first communication path between the host computer and the first apparatus; connecting a second communication path between the first apparatus and the second apparatus; receiving by the first apparatus a first data input/output request from the host computer through the first path; when the first apparatus has judged that the first request is not for the first apparatus, transmitting by the first apparatus a second data input/output request corresponding to the first request, to the second apparatus through the second path; and by the second apparatus, receiving the second request and executing a data input/output process corresponding to the second request received.
摘要:
A plurality of contents intrinsic values that are values intrinsic to respective contents of a plurality of files stored in one or more first storage devices are calculated. Whether two or more identical contents intrinsic values are contained among the plurality of contents intrinsic values is determined. When two or more identical contents intrinsic values are present, an access destination of a first file corresponding to a first contents intrinsic value from among these two or more contents intrinsic values is changed to a position having stored therein a second file corresponding to a second contents intrinsic value from among these two or more contents intrinsic values.
摘要:
A DBMS performs a checkpoint process for maintaining consistency of data. A snapshot acquisition control program detects the checkpoint process externally to the DBMS and creates a snapshot in an external storage according to the timing of the checkpoint. Correspondence between checkpoints and snapshots is maintained in a CP-SH correspondence management table to make it possible to restore in a short time data at the time of an arbitrary checkpoint.