Storage system, storage controller and data compression method

Details Storage system, storage controller and data compression method Storage system, storage controller and data compression method

2011-06-21

2011-06-21

Rones, Charles (Department: 2164)

Data processing: database and file management or data structures

File or database maintenance

Database archive

Reexamination Certificate

active

07966296

ABSTRACT:
Provided are a storage system, a storage controller and a data compression method that will not deteriorate the performance of a storage system by adjusting the compression processing time required for compressing data. This storage controller includes a statistical information management unit for managing a throughput value decided based on statistical information of previously compressed file data as a system performance value, a mode setting unit for setting a compression mode of either a system performance priority mode that terminates compression of the file data and gives priority to system performance or a compression priority mode that gives priority to compression of the file data based on a comparison between a system performance target value preset as a target value and the system performance value, and a compression controller for compressing the file data based on the compression mode set with the mode setting unit.

REFERENCES:
patent: 5883588 (1999-03-01), Okamura
patent: 2003/0223097 (2003-12-01), Sakai et al.
patent: 2008/0025298 (2008-01-01), Lev-Ran et al.
patent: 946235 (1997-02-01), None

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