SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT FOR DEDUPLICATION AWARE QUALITY OF SERVICE OVER DATA TIERING

摘要

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.

主权项

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.