Predictive point-in-time copy for storage systems
AssigneeInternational Business Machines Corporation
InventorJohn P. Wilkinson
Life of this patent
Estimating the term…
Abstract
Method and system are provided for predictive point-in-time copy for storage systems. The method may include: recording a frequency of writes to an area of a storage volume; and prioritising areas for having point-in-time copies carried out based on the write frequency to an area, wherein areas in the storage volume having a high write frequency are prioritised before areas with a lower write frequency. An area may be of a coarser granularity than a region tracked for the point-in-time copy. The method may include: recording the frequency of writes to an area in a given period; and prioritising areas by their frequency of writes in the given period immediately prior to the point-in-time copy.
Claims23
A method for predictive point-in-time copy for storage systems, comprising:
- recording a frequency of writes to an area of a storage volume;
- and
- prioritising areas for having point-in-time copies carried out based on the write frequency to an area, wherein areas in the storage volume having a high write frequency are prioritised before areas with a lower write frequency.
A system for predictive point-in-time copy for storage systems, comprising:
- an area use recorder for recording a frequency of writes to an area of a storage volume;
- and
- an area ordering component for prioritising areas for having point-in-time copies carried out based on the write frequency to an area, wherein areas in the storage volume having a high write frequency are prioritised before areas with a lower write frequency.
A computer program product for predictive point-in-time copy for storage systems, the computer program product comprising:
- a computer readable storage medium readable by a processing circuit and storing instructions for execution by the processing circuit to cause the processing circuit to perform a method comprising:
- recording a frequency of writes to an area of a storage volume;
- and
- prioritising areas for having point-in-time copies carried out based on the write frequency to an area, wherein areas in the storage volume having a high write frequency are prioritised before areas with a lower write frequency.
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Dependencies are inferred from the claim text.