Invention Grant
- Patent Title: Nonvolatile memory data recovery after power failure
- Patent Title (中): 停电后非易失性存储器数据恢复
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Application No.: US13854263Application Date: 2013-04-01
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Publication No.: US09478271B2Publication Date: 2016-10-25
- Inventor: Zhengang Chen , Earl T. Cohen , Alex G. Tang
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Cupertino
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Cupertino
- Agency: Christopher P. Maiorana, PC
- Main IPC: G11C16/30
- IPC: G11C16/30 ; G11C7/24 ; G11C8/20 ; G11C11/56 ; G11C16/10 ; G11C16/22

Abstract:
A method for data recovery after a power failure is disclosed. The method may include steps (A) to (D). Step (A) may determine that a last power-down of a solid-state drive was an unsafe power-down. Step (B) may search at least some of a plurality of pages of a nonvolatile memory of the solid-state drive to define an unsafe zone in response to the determining that the last power-down of the solid-state drive was the unsafe power-down. Step (C) may define a pad zone comprising one or more of the pages subsequent to the unsafe zone. Step (D) may resume operation of the solid-state drive by writing new data subsequent to the pad zone.
Public/Granted literature
- US20140269053A1 NONVOLATILE MEMORY DATA RECOVERY AFTER POWER FAILURE Public/Granted day:2014-09-18
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