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US Patent 11294807 Delayed write failure logging

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Is a
Patent
Patent

Patent attributes

Patent Applicant
Western Digital
Western Digital
Current Assignee
Western Digital
Western Digital
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
11294807
Date of Patent
April 5, 2022
Patent Application Number
16452128
Date Filed
June 25, 2019
Patent Citations
‌
US Patent 10009438 Transaction log acceleration
‌
US Patent 10061655 Volatile cache reconstruction after power failure
‌
US Patent 10139884 Power loss protection for solid state drives
Patent Primary Examiner
‌
Sarai E Butler
CPC Code
‌
G06F 11/0778
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G06F 12/0804
‌
G06F 12/10
‌
G06F 12/0868
‌
G06F 12/0246
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G06F 2201/82
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G06F 2212/1032
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G06F 2212/1028
...

The present disclosure generally relates to a method and device for reduce the amount of energy used to revert data within a storage device to a consistent state after a power loss event. Once power is lost from a host device, and prior to complete shutdown, a log is created within non-volatile memory (NVM) of the storage device. The log contains logical block addresses (LBAs) corresponding to data that experienced a write failure. At the next power-on event, the log is checked to see if any LBAs are present. If LBAs are present in the log, then the data that experienced a write failure can be properly written to the storage device.

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