Invention Grant
- Patent Title: Wear mitigation in a data storage system through data migration
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Application No.: US15875572Application Date: 2018-01-19
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Publication No.: US11023352B2Publication Date: 2021-06-01
- Inventor: Mark A. Gaertner , Anil Kashyap
- 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: Hall Estill Attorneys at Law
- Main IPC: G06F3/06
- IPC: G06F3/06 ; G06F11/34 ; G06F11/07 ; G06F11/00 ; G06N7/00

Abstract:
Method and apparatus for distributing wear in a disc stack. A data transducer is used to record data to a data recording surface in the disc stack. Performance statistics are accumulated including a dwell metric value indicative of dwell time of the transducer adjacent a selected radial location and an operational life metric value indicative of accumulated elapsed operation of the transducer. Data are migrated from the selected radial location to a target location within the disc stack responsive to at least a selected one of the dwell metric value or the operational life metric value. In some cases, the dwell metric value may indicate an estimated amount of lubricant disturbance and the operational life operation may indicate operational hours of a heat assisted magnetic recording (HAMR) element. The target location may be on a different data recording surface having an associated transducer with a lower operational life metric value.
Public/Granted literature
- US20190227898A1 Wear Mitigation in a Data Storage System Through Data Migration Public/Granted day:2019-07-25
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