Parallel Mirrored Copying with Write Consistency
AssigneeInternational Business Machines Corporation
InventorsAnushka Dwivedi, Prateek Goel
Life of this patent
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Abstract
A method, computer program product and/or system for facilitating data access that performs the following steps (not necessarily in the following order): (i) generating a Mirror Write Consistency (MWC) record associated with a data portion stored on a data storage device (ii) saving a dynamic copy of the MWC record in a manner such that the MWC record is more readily accessible for read and write operations than the data portion stored on the data storage device. At least the generating and making step is performed by computer software running on computer hardware.
Claims18
A method for facilitating data access, the method comprising:
- generating a Mirror Write Consistency (MWC) record associated with a data portion stored on a data storage device;
- and
- saving a dynamic copy of the MWC record in a manner such that the MWC record is more readily accessible for read and write operations than the data portion stored on the data storage device.
A computer program product for facilitating data access, the computer program product comprising a computer readable storage medium having stored thereon:
- first program instructions programmed to generate a Mirror Write Consistency (MWC) record associated with a data portion stored on a data storage device;
- and
- second program instructions programmed to save a dynamic copy of the MWC record in a manner such that the MWC record is more readily accessible for read and write operations than the data portion stored on the data storage device.
A computer system for facilitating data access, the computer system comprising:
- a processor(s) set;
- and
- a computer readable storage medium;
- wherein:
- the processor set is structured, located, connected and/or programmed to run program instructions stored on the computer readable storage medium;
- and
- the program instructions include:
- first program instructions programmed to generate a Mirror Write Consistency (MWC) record associated with a data portion stored on a data storage device;
- and
- second program instructions programmed to save a dynamic copy of the MWC record in a manner such that the MWC record is more readily accessible for read and write operations than the data portion stored on the data storage device.
Dependencies are inferred from the claim text.