IP Library › Granted Patent US 12,259,786
Granted Patent B2
US 12,259,786 · App. 17/232,144 · Granted Mar 25, 2025

Systems, methods, and devices for fault resilient storage

Inventors: Yang Seok Ki (Palo Alto, CA); Sungwook Ryu (Palo Alto, CA); Alain Tran (Hwasung-si, KR)
Assignee: SAMSUNG ELECTRONICS CO., LTD.
G06F11/1428G06F3/0619G06F3/0634G06F3/0673G06F11/1084G06F11/165G06F2201/85
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Quick Facts
Patent No.
US 12,259,786
App. No.
17/232,144
Filed
Apr 15, 2021
Granted
Mar 25, 2025
Kind
B2
Art Unit
2113
USPC
714/6.11
Abstract

A method of operating a storage device may include determining a fault condition of the storage device, selecting a fault resilient mode based on the fault condition of the storage device, and operating the storage device in the selected fault resilient mode. The selected fault resilient mode may include one of a power cycle mode, a reformat mode, a reduced capacity read-only mode, a reduced capacity mode, a reduced performance mode, a read-only mode, a partial read-only mode, a temporary read-only mode, a temporary partial read-only mode, or a vulnerable mode. The storage device may be configured to perform a namespace capacity management command received from the host. The namespace capacity management command may include a resize subcommand and/or a zero-size namespace subcommand. The storage device may report the selected fault resilient mode to a host.

Claims (48)

1. A method comprising:

receiving, at a storage device, a command;

sending, based on the command, from the storage device, information about a power cycle feature of the storage device;

determining a fault condition of the storage device;

selecting a fault resilient mode based on the fault condition of the storage device, wherein the fault resilient mode comprises a power cycle mode; and

operating the storage device in the fault resilient mode;

wherein the operating the storage device in the fault resilient mode comprises:

performing, based on the information about the power cycle feature, a power cycle operation on the storage device.

2. The method of claim 1 , wherein the storage device is configured to perform a namespace capacity management command received from a host.

3. The method of claim 2 , wherein the namespace capacity management command comprises a resize subcommand.

4. The method of claim 1 , wherein the storage device is configured to report, to a host, the fault resilient mode.

5. A method comprising:

receiving, at a storage drive, a command;

sending, based on the command, from the storage drive, information about a format feature of the storage drive;

determining, by the storage drive, a fault condition of the storage drive;

selecting a fault resilient mode based on the fault condition of the storage drive, wherein the fault resilient mode comprises a format mode; and

operating the storage drive in the fault resilient mode;

wherein:

the storage drive comprises a storage medium; and

the operating the storage drive in the fault resilient mode comprises:

formatting, based on the information about the format feature, at least a portion of the storage medium.

6. The method of claim 5 , wherein the storage drive is configured to perform a namespace capacity management command received from a host.

7. The method of claim 6 , wherein the namespace capacity management command comprises a resize subcommand.

8. The method of claim 5 , wherein the storage drive is configured to report, to a host, the fault resilient mode.

9. A method comprising:

determining, by a storage drive, a fault condition of the storage drive;

selecting a fault resilient mode based on the fault condition of the storage drive, wherein the fault resilient mode comprises a modified performance mode;

operating the storage drive in the fault resilient mode; and

receiving, from the storage drive, performance information about the storage drive;

wherein the operating the storage drive in the modified performance mode comprises sending, based on the performance information, write data to the storage drive with a modified operation speed.

10. The method of claim 9 , wherein the storage drive is configured to perform a command received from a host.

11. The method of claim 10 , wherein the command comprises a namespace capacity management command.

12. The method of claim 11 , wherein the namespace capacity management command comprises a resize subcommand.

13. The method of claim 11 , wherein the namespace capacity management command comprises a zero-size namespace subcommand.

14. The method of claim 9 , wherein the storage drive is configured to report, to a host, the fault resilient mode.

15. The method of claim 9 , wherein the performance information comprises bandwidth information.

16. The method of claim 9 , wherein the performance information comprises information about access operation frequency.

17. An apparatus comprising:

a storage drive comprising:

a storage medium; and

a storage controller, wherein the storage controller is configured to:

determine a fault condition of the storage drive;

select a fault resilient mode based on the fault condition of the storage drive, wherein the fault resilient mode comprises a modified read mode; and

operate the storage drive in the fault resilient mode;

receive a write request; and

determine to perform, based on the write request and the modified read mode, a write operation.

18. The apparatus of claim 17 , wherein the storage drive is configured to perform a namespace capacity management command received from a host.

19. The apparatus of claim 17 , wherein the storage drive is configured to report, to a host, the fault resilient mode.

Continuity (6)
Provisional Application 63128001 · Dec 18, 2020
Provisional Application 63057744 · Jul 28, 2020
Provisional Application 63052854 · Jul 16, 2020
Provisional Application 63051158 · Jul 13, 2020
Provisional Application 63023243 · May 11, 2020
Related Publication 20210349782A1 · Nov 11, 2021
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