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AssigneeInternational Business Machines Corporation
InventorsGail Andrea Spear, Robert Francis Bartfai, Edward Hsiu-Wei Lin, William Frank Micka, Olympia Gluck, Aviad Zlotnick, Michael E. Factor, Thomas Charles Jarvis, Sam Clark Werner
Estimating the term…
Provided are a method, system, and program for forming a consistency group of data. Information is provided on a consistency group relationship indicating a plurality of slave controllers and, for each indicated slave controller, a slave storage unit managed by the slave controller. A command is transmitted to each slave controller in the consistency group relationship to cause each slave controller to transmit data in the slave storage unit to a remote storage in a manner that forms the consistency group. A determination is made as to whether all the slave controllers successfully transmitted the data in the slave storage units that is part of the consistency group to the remote storage.
A method for forming a consistency group of data, comprising:
A method for forming a consistency group of data, comprising:
A method for forming a consistency group, comprising:
A system in communication with a plurality of slave controllers, wherein each slave controller manages at least one slave storage unit, and wherein each slave controller is in communication with one remote storage, comprising:
A system in communication with a plurality of slave controllers, wherein each slave controller manages at least one slave storage unit, and wherein each slave controller is in communication with one remote storage, comprising:
A system in communication with a master controller, comprising:
An article of manufacture comprising a computer readable storage medium including code executed to form a consistency group of data, wherein a plurality of slave controllers manage slave storage units and to perform operations, the operations comprising:
An article of manufacture comprising a computer readable storage medium including code executed to form a consistency group of data, wherein a plurality of slave controllers manage slave storage units and to perform operations, the operations comprising:
An article of manufacture comprising a computer readable storage medium including code executed to form a consistency group of data and to perform operations, the operations comprising
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
By mirroring: while ensuring consistency
By mirroring: using a plurality of controllers
Using a plurality of controllers: asynchronous techniques
Indexing scheme relating to error detection, to error correction, and to monitoring: solving problems relating to consistency
Term ended 27 Jul 2025 (estimated)
1. Field of the Invention
The present invention relates to a system, method, and program for copying data.
2. Description of the Related Art
Referring now to the drawings in which like reference numbers represent corresponding parts throughout:
FIG. 1 is a block diagram illustrating a network computing environment in which aspects of the invention are implemented;
FIG. 2 illustrates an arrangement of a storage controller in accordance with implementations of the invention;
In the following description, reference is made to the accompanying drawings which form a part hereof and which illustrate several embodiments of the present invention. It is understood that other embodiments may be utilized and structural and operational changes may be made without departing from the scope of the present invention.
FIG. 1 illustrates a network computing environment in which aspects of the invention may be implemented. A local site 2 includes storage controllers 4a, 4b, 4c, where each storage controller 4a, 4b, 4c is coupled to an attached storage system 6a, 6b, 6c, respectively. The storage controllers 4a, 4b, and 4c manage Input/Output (I/O) access to volumes in the storage systems 6a, 6b, 6c from host systems (not shown). Each storage controller 4a, 4b, 4c copies data to a corresponding remote storage controller 8a, 8b, 8c at a remote site 10 via connections 12a, 12b, and 12c. The storage controllers 4a, 4b, and 4c transmit data consistent as of point-in-times to the remote storage controllers 8a, 8b, 8c, where the remote storage controllers 8a, 8b, 8c store the data to their respective attached remote storage systems 14a, 14b, 14c. In certain implementations, the storage controllers 4a, 4b, 4c continuously transmit data to the remote site 10, and at certain instances in time will ensure consistency of the data at the remote site 10. In certain implementations, the remote site 10 may save a consistency group of data to another storage, such as consistent backup storages 16a, 16b, 16c, to maintain a backup of the consistent data at the remote site 10. After a consistent group of data is transmitted to the remote storage 14a, 14b, 14c, a copy is made from remote storage 14a, 14b, 14c to a respective consistent backup storage 16a, 16b, 16c. Although FIG. 1 illustrates a certain number of components at the sites, such as three storage controllers and storages, the described implementations may operate with any number of storage controllers and storage systems at the sites.
The remote site 10 may be hundreds or thousands of miles from the local site 2. The connections 12a, 12b, 12c between pairs of storage controllers may comprise a dedicated line, such as a dedicated fibre optical network or connection maintained by a long distance telecommunication carrier, long distance fibre optic connection having channel extenders, or extend through a network, such as a Storage Area Network (SAN), Local Area Network (LAN), the Internet, and Intranet, etc.