Invention Grant
- Patent Title: SSD supporting read-only mode after PLP backup failure
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Application No.: US16944713Application Date: 2020-07-31
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Publication No.: US11379141B2Publication Date: 2022-07-05
- Inventor: Amit Jain
- Applicant: Kioxia Corporation
- Applicant Address: JP Minato
- Assignee: Kioxia Corporation
- Current Assignee: Kioxia Corporation
- Current Assignee Address: JP Minato
- Agency: Allen & Overy LLP
- Main IPC: G06F3/06
- IPC: G06F3/06 ; G06F13/42 ; G06F13/16

Abstract:
A method of operating a Solid State Drive (SSD), comprising identifying critical metadata corresponding to data previously written to the SSD. In response to a power loss event the method also includes storing the critical metadata in a non-volatile memory. Further, the method also involves writing a first table of contents corresponding to the stored critical metadata to the non-volatile memory and storing a pointer to the first table of contents. A Solid State Drive (SSD) including a memory controller, a non-volatile memory, and a power loss protection capacitor. The memory controller is configured to identify critical metadata corresponding to data previously written to the SSD. The memory controller is also configured to, in response to a power loss event, store the critical metadata in a non-volatile memory write a first table of contents corresponding to the stored critical metadata to the non-volatile memory, and store a pointer to the first table of contents.
Public/Granted literature
- US20220035552A1 SSD SUPPORTING READ-ONLY MODE AFTER PLP BACKUP FAILURE Public/Granted day:2022-02-03
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