Granted Patent B1

US 12,730,734 · App. 18/919,129 · Granted Sep 8, 2026

Inventors: Sarvesh Varakabe Gangadhar (San Jose, CA); David J. Pelster (Longmont, CO); Bhargavi Govindarajan (Milpitas, CA); Archana Rajagopal (El Dorado Hills, CA); Mark Anthony Sumabat Golez (Folsom, CA); Yogesh Wakchaure (Folsom, CA)

Assignee: SK hynix NAND Product Solutions Corp.

G06F11/3037G06F1/30G06F11/3452

Abstract

Claims (34)

1 . A method of reducing the impact of drive parameter writes on solid state drive (SSD) performance, comprising:

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

in response to detecting the power-loss condition, copying the one or more SSD drive parameters from the volatile memory of the SSD to non-volatile memory of the SSD,

wherein the SSD drive parameters include drive thermal information.

2 . The method of claim 1 , wherein the SSD is a NAND SSD.

3 . The method of claim 1 , wherein the volatile memory is one or more of: random-access memory and dynamic random-access memory.

4 . The method of claim 1 , wherein the power-loss condition is a supply voltage of the SSD dropping below a first threshold.

5 . The method of claim 1 , wherein the non-volatile memory is NAND memory.

6 . The method of claim 1 , further comprising:

detecting a power-restore condition in the SSD; and

copying the one or more SSD drive parameters from the non-volatile memory of the SSD to the volatile memory of the SSD.

7 . The method of claim 1 , wherein the power-restore condition is the supply voltage of the SSD rising above below a second threshold.

8 . The method of claim 1 , wherein the SSD drive parameters include drive debug information.

9 . The method of claim 1 , wherein the SSD drive parameters include a number of host read and writes.

10 . The method of claim 1 , wherein the SSD drive parameters include a number of non-volatile memory read and writes.

11 . The method of claim 1 , wherein the SSD drive parameters include media error handling data.

12 . The method of claim 1 , wherein the SSD drive parameters include temperature information.

13 . The method of claim 1 , wherein the SSD drive parameters include throttle information.

14 . The method of claim 1 , wherein the SSD drive parameters include firmware download information.

15 . The method of claim 1 , wherein the SSD drive parameters include a drive internal statistic.

16 . A method of reducing the impact of drive parameter writes on solid state drive (SSD) performance, comprising:

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

in response to detecting the power-loss condition, copying the one or more SSD drive parameters from the volatile memory of the SSD to non-volatile memory of the SSD,

wherein the SSD drive parameters include drive debug information.

17 . The method of claim 16 , wherein the SSD drive parameters include a number of host read and writes.

18 . The method of claim 1 , wherein the SSD drive parameters include a number of non-volatile memory read and writes.

19 . The method of claim 1 , wherein the SSD drive parameters include media error handling data.

20 . A method of reducing the impact of drive parameter writes on solid state drive (SSD) performance, comprising:

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

in response to detecting the power-loss condition, copying the one or more SSD drive parameters from the volatile memory of the SSD to non-volatile memory of the SSD,

wherein the SSD drive parameters include a number of host read and writes.

Continuity (1)

References Cited (26)