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US 10,885,061 B2Granted
Bandwidth management in a data storage system
AssigneeInternational Business Machines Corporation
InventorsMatthew J. Ward, Gregory E. McBride
Life of this patent
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AssigneeInternational Business Machines Corporation
InventorsMatthew J. Ward, Gregory E. McBride
Estimating the term…
In one embodiment, upon initiation of a consistency group, bandwidth reduction scanning logic determines whether a volume portion such as a track containing data which is to be mirrored from a primary volume to a secondary volume to form a consistency group, is allocated to the primary volume. If not, the bandwidth reduction scanning logic causes the data of the associated volume portion to not be mirrored from the primary volume to the secondary volume. As a result, the volume portion determined to not be allocated to the primary volume is bypassed by the mirroring operation, thereby reducing bandwidth usage by the mirroring and accelerating the formation of a consistency group. Other features and aspects may be realized, depending upon the particular application.
A system for use with a primary volume of data and a secondary volume of data, comprising:
A method, comprising:
A computer program product for use with a host, primary and secondary volumes, a data storage system having a storage controller and at least one storage unit controlled by the storage controller and configured to store data in a primary volume, wherein the storage controller has a processor and a cache, wherein the computer program product comprises a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor of the storage controller to cause storage controller processor operations, the storage controller processor operations comprising:
Dependencies are inferred from the claim text.