SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT FOR DEDUPLICATION AWARE QUALITY OF SERVICE OVER DATA TIERING
First Claim
1. A computer program product for ensuring compliance of service levels corresponding to file-system operations in a deduplicated, tiered storage system comprising storage devices of varying performance levels, each of the performance levels being associated with at least one service level, the computer program product comprising a computer readable storage medium having program code embodied therewith, the program code readable/executable by a processor to:
- perform a deduplication remapping operation, by the processor, so that a data item corresponding to a higher service level, is stored as an original on a higher performance storage tier while duplicates of the data item corresponding to a lower service level exist in lower performance storage tier at least in part as pointers to the data item on the higher performance storage tier.
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Accused Products
Abstract
A method for ensuring compliance of service levels corresponding to file-system operations in a deduplicated, tiered storage system comprising storage devices of varying performance levels, each of the performance levels being associated with at least one service level, includes performing a deduplication remapping operation so that a data item corresponding to a higher service level, is stored as an original on a higher performance storage tier while duplicates of the data item corresponding to a lower service level exist in lower performance storage tier at least in part as pointers to the data item on the higher performance storage tier.
20 Citations
21 Claims
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1. A computer program product for ensuring compliance of service levels corresponding to file-system operations in a deduplicated, tiered storage system comprising storage devices of varying performance levels, each of the performance levels being associated with at least one service level, the computer program product comprising a computer readable storage medium having program code embodied therewith, the program code readable/executable by a processor to:
perform a deduplication remapping operation, by the processor, so that a data item corresponding to a higher service level, is stored as an original on a higher performance storage tier while duplicates of the data item corresponding to a lower service level exist in lower performance storage tier at least in part as pointers to the data item on the higher performance storage tier. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system, comprising:
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a processor and logic integrated with and/or executable by the processor, the logic being adapted to; perform a deduplication remapping operation so that a data item corresponding to a higher service level, is stored as an original on a higher performance storage tier while duplicates of the data item corresponding to a lower service level exist in lower performance storage tier at least in part as pointers to the data item on the higher performance storage tier. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for ensuring compliance of service levels corresponding to file-system operations in a deduplicated, tiered storage system comprising storage devices of varying performance levels, each of the performance levels being associated with at least one service level, the method comprising:
performing a deduplication remapping operation so that a data item corresponding to a higher service level, is stored as an original on a higher performance storage tier while duplicates of the data item corresponding to a lower service level exist in lower performance storage tier at least in part as pointers to the data item on the higher performance storage tier. - View Dependent Claims (16, 17, 18, 19, 20, 21)
Specification