Sk Hynix Nand Product Solutions Corp.

Bhargavi Govindarajan

David J Pelster

Mark Anthony Sumabat Golez

Yogesh B Wakchaure

Sarvesh Varakabe Gangadhar

David G Dreyer

Archana Rajagopal

Mechanisms for controlling background wear leveling are provided, including: increasing a first counter; comparing the first counter to a first threshold; and in response to the first counter meeting the first threshold: decreasing the first counter by a value of the first threshold; and triggering background wear leveling. In some embodiments, the first counter is increased in response to receiving a write trigger. In some embodiments, the first threshold is based upon a page size and a number of planes of physical media of an SSD. In some embodiments, the mechanisms further comprise: incrementing a second counter in response to receiving a host write trigger; comparing the second counter to a second threshold; and in response to the second counter meeting the second threshold, decreasing the second counter by the second threshold, wherein the increasing the first counter is performed in response to the second counter meeting the second threshold.

Systems, methods, and media for controlling background wear leveling in solid-state drives

Mechanisms for reducing the impact of drive parameter writes on solid state drive (SSD) performance are provided, the methods including: saving one or more SSD drive parameters of an SSD to volatile memory of the SSD using an SSD controller; detecting a power-loss condition in the SSD; and copying the one or more SSD drive parameters from the volatile memory of the SSD to non-volatile memory of the SSD. In some embodiments, the SSD is a NAND SSD. In some embodiments, the one or more SSD drive parameters include one or more of: a drive health parameter, a drive internal statistic, drive thermal information, drive debug information, a number of host and non-volatile memory read and writes, media error handling data, temperature and throttle information, and firmware download information. In some embodiments, the volatile memory is one or more of: random-access memory and dynamic random-access memory.

Systems, methods, and media for reducing the impact of drive parameter writes on solid state drive performance

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Milpitas, CA, United States of America

Bhargavi Govindarajan