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US 8,478,954 B2Granted
Prioritizing subgroups in a consistency group
AssigneeInternational Business Machines Corporation
InventorsMichael E. Browne, Nancy J. Finn, Christina Lara, Maria R. Ward
Life of this patent
Estimating the term…
Abstract
A method which prioritizes the subgroups in a consistency group by usage and/or business process. Thereafter, in case of abnormal operation of the process for copying the consistency group from primary storage to secondary storage, only a portion of the subgroups of the consistency group are copied from primary storage to secondary storage.
Claims12
A method of utilizing subgroups in a consistency group comprising the steps of:
- responsive to input from a system administrator, defining a consistency group in a primary storage comprising a first grouping of logical storage volumes and defining a corresponding consistency group in a secondary storage comprising a second grouping of logical storage volumes such that updates to the primary storage consistency group are copied to the secondary storage consistency group in the same order they were made to the primary storage consistency group;
- responsive to input from a system administrator, defining a plurality of subgroups in the consistency group in the primary storage and a corresponding plurality of subgroups in the secondary storage;
- copying by a computer processor the entire primary storage consistency group to the corresponding secondary storage consistency group;
- detecting by a storage controller an abnormal condition in a process for copying the entire consistency group from primary storage to the corresponding consistency group in secondary storage, the abnormal condition preventing the entire primary storage consistency group from being copied in a timely manner to the corresponding secondary storage consistency group;
- responsive to the detecting of the abnormal condition, prioritizing by a computer processor the subgroups for copying from the primary storage consistency group to the second storage consistency group according to a business process to improve the abnormal condition;
- and
- responsive to the detecting of the abnormal condition, copying by a computer processor at least one subgroup but less than all of the subgroups in the primary storage consistency group to a corresponding at least one subgroup but less than all of the subgroups in the secondary storage consistency group.
4 more elements
A computer program product for utilizing a plurality of subgroups in a consistency group in primary storage, the computer program product comprising:
- a nontransitory computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising:
- computer readable program code to define a consistency group in a primary storage comprising a first grouping of logical storage volumes and to define a corresponding consistency group in a secondary storage comprising a second grouping of logical storage volumes such that updates to the primary storage consistency group are copied to the secondary storage consistency group in the same order they were made to the primary storage consistency group;
- computer readable program code configured to define a plurality of subgroups in the consistency group in the primary storage and a corresponding plurality of subgroups in the secondary storage;
- computer readable program code to copy the entire primary storage consistency group to the corresponding secondary storage consistency group;
- computer readable program code to detect an abnormal condition in a process for copying the entire consistency group from primary storage to the corresponding consistency group in secondary storage, the abnormal condition preventing the entire primary storage consistency group from being copied in a timely manner to the corresponding secondary storage consistency group;
- responsive to the detection of the abnormal condition, computer readable program code configured to prioritize the subgroups for copying from the primary storage consistency group to the secondary storage consistency group according to a business process to improve the abnormal condition;
- and
- responsive to the detection of the abnormal condition, computer readable program code configured to copy at least one subgroup but less than all of the subgroups in the primary storage consistency group to a corresponding at least one subgroup but less than all of the subgroups in the secondary storage consistency group.
5 more elements
Dependencies are inferred from the claim text.