Emc IP Holding Company LLC

Emc Corporation

Rajiv Agarwal

Michael W Shapiro

Haleh Tabrizi

Jeffrey Paul Ferreira

Jeffrey S Bonwick

Michael Francis Barrientos

A method for managing persistent storage. The method includes selecting a page for a proactive read request, where the page is located in the persistent storage. The method further includes issuing the proactive read request to the page, receiving, in response to the proactive read request, a bit error value (BEV) for data stored on the page, obtaining a BEV threshold (T) for the page, wherein T is determined using a program/erase cycle value associated with the page and a retention time of the data stored on the page, making a first determination that the BEV is greater than T, based on the first determination: identifying an m-page, where the m-page is a set of pages and the page is in the set of pages, and setting the m-page as non-allocatable for future operations.

Method and system for improving flash storage utilization by predicting bad M-pages

A method for managing a storage appliance. The method includes determining an input/output (I/O) workload characterization (IWC) for the storage appliance. The method further includes determining an optimized temperature for the storage modules in the storage appliance based on the IWC, determining that a current temperature of the storage modules is not the optimized temperature, and modifying operation of at least one active cooling component in the storage appliance to change the current temperature of the storage modules to the optimized temperature.

Method and system for improving flash storage performance for various types of workloads by modulating operating temperature

Method and system for improving flash storage utilization by predicting bad m-pages

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Santa Clara, CA, United States of America

Rajiv Agarwal