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公开(公告)号：US11531582B2
公开(公告)日：2022-12-20
申请号：US16935763
申请日：2020-07-22
IPC分类号： G11B20/18 , G11B20/10 , G06F11/07 , G11B20/12 , G06F3/06 , G06F11/10 , G11B5/008 , G11B5/012
摘要： A data storage device is disclosed comprising a non-volatile storage medium (NVSM) having a plurality of data sectors and a plurality of reserve sectors. A map-out value is generated for each of a first plurality of the data sectors based on a read latency of each of the first plurality of data sectors, and when the map-out value of a first data sector in the first plurality of data sectors exceeds a threshold, a first logical block address (LBA) is mapped from the first data sector to a first reserve sector. When the map-out value of a second data sector in the first plurality of data sectors exceeds the map-out value of the first data sector, the first LBA is mapped from the first reserve sector back to the first data sector, and a second LBA is mapped from the second data sector to the first reserve sector.
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公开(公告)号：US11593204B2
公开(公告)日：2023-02-28
申请号：US17332552
申请日：2021-05-27
发明人： Bernd Lamberts , Jeffrey Hobbet , Maulik Thaker , Evan Richardson , Remmelt Pit
摘要： An approach to identifying a corrective action for a data storage device (DSD), such as one implemented in a fleet of DSDs in a data center, involves receiving error data about excursions from normal operational behavior of the DSD, inputting data representing a particular excursion into a probabilistic decision network which characterizes a set of DSD operational metrics and certain DSD controller rules that represent internal controls of the DSD and corresponding conditional relationships among the operational metrics, determining from the decision network the likelihood that one or more possible causes was a contributing factor to the particular excursion, and determining a corrective action for the particular excursion based on the determined likelihood of a particular cause of the one or more possible causes. The corrective action may then be shared with the DSD for in-situ execution of corresponding self-repair operations.
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公开(公告)号：US20220382633A1
公开(公告)日：2022-12-01
申请号：US17332552
申请日：2021-05-27
发明人： Bernd Lamberts , Jeffrey Hobbet , Maulik Thaker , Evan Richardson , Remmelt Pit
摘要： An approach to identifying a corrective action for a data storage device (DSD), such as one implemented in a fleet of DSDs in a data center, involves receiving error data about excursions from normal operational behavior of the DSD, inputting data representing a particular excursion into a probabilistic decision network which characterizes a set of DSD operational metrics and certain DSD controller rules that represent internal controls of the DSD and corresponding conditional relationships among the operational metrics, determining from the decision network the likelihood that one or more possible causes was a contributing factor to the particular excursion, and determining a corrective action for the particular excursion based on the determined likelihood of a particular cause of the one or more possible causes. The corrective action may then be shared with the DSD for in-situ execution of corresponding self-repair operations.
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公开(公告)号：US20220027226A1
公开(公告)日：2022-01-27
申请号：US16935763
申请日：2020-07-22
摘要： A data storage device is disclosed comprising a non-volatile storage medium (NVSM) having a plurality of data sectors and a plurality of reserve sectors. A map-out value is generated for each of a first plurality of the data sectors based on a read latency of each of the first plurality of data sectors, and when the map-out value of a first data sector in the first plurality of data sectors exceeds a threshold, a first logical block address (LBA) is mapped from the first data sector to a first reserve sector. When the map-out value of a second data sector in the first plurality of data sectors exceeds the map-out value of the first data sector, the first LBA is mapped from the first reserve sector back to the first data sector, and a second LBA is mapped from the second data sector to the first reserve sector.
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公开(公告)号：US20210081238A1
公开(公告)日：2021-03-18
申请号：US16572973
申请日：2019-09-17
发明人： Bernd Lamberts , Remmelt Pit , Cory J. Peterson , Kris Schouterden , David Hall , Shad Thorstenson , Andy Larson
摘要： A Data Storage Device (DSD) includes a memory for storing data, and a controller configured to execute firmware or code to perform a task. While performing the task, the controller is further configured to assign unique identifiers to respective firmware or code portions that are executed to perform the task, and create a list or data structure including the unique identifier assigned to the firmware or code portion that created the task. A unique identifier is added to the list or data structure for each firmware or code portion executed for the task. The list or data structure indicates the order in which the firmware or code portions are executed.
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6.发明授权公开(公告)号：US10897273B2
公开(公告)日：2021-01-19
申请号：US16020853
申请日：2018-06-27
发明人： Bernd Lamberts , Remmelt Pit , Timothy Lieber , Robert M. Lester , Zarko Popov
摘要： A dynamic scalable error correction coding (ECC) scheme for a data storage system involves a system controller predicting a type and/or amount of ECC needed to reconstruct data to be stored on a particular data storage device(s) based on operational data integrity information accessed from the array of data storage devices. Thus, redundancy does not need to be allocated unless required. The devices may be logically grouped into subsets according to common characteristics, whereby the prediction made for a device in a subset may be based on the data integrity information from that subset, as well as from other relevant subsets.
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公开(公告)号：US11621963B2
公开(公告)日：2023-04-04
申请号：US17333007
申请日：2021-05-27
发明人： Bernd Lamberts , Jeffrey Hobbet , Evan Richardson , Remmelt Pit , Ravi Singh
摘要： An approach to exchanging information between data storage devices (DSDs) within a secure data center and an external fleet health manager (FHM) application includes querying one or more DSDs for data to be analyzed, including providing a unique query identifier, whereby a particular DSD responsively provides (i) a device identifier identifying itself, (ii) a random key code for authentication and integrity purposes, (iii) the data to be analyzed, and (iv) the query identifier for the FHM application to verify. The FHM application can then digitally sign a corrective action payload, using the key code from the particular DSD, including the query identifier and the device identifier and a recommended corrective action, and transmit the signed corrective action payload to the data center for application to the particular DSD, whereby the DSD can execute pre-defined fundamental repair action operation(s) corresponding to the corrective action for in-situ repair.
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8.发明授权公开(公告)号：US10283149B2
公开(公告)日：2019-05-07
申请号：US15953353
申请日：2018-04-13
发明人： Bernd Lamberts , Classica Jain , Remmelt Pit
摘要： A Data Storage Device (DSD) includes a magnetic storage medium and a head configured to read and write data using a current default write policy that affects an amount of power output by at least one write-assistive component of the head. One or more experimental writes are performed by writing data on the magnetic storage medium using an experimental write policy for the at least one write-assistive component, and the data is read from the magnetic storage medium. An experimental performance of the one or more experimental writes is evaluated based on the reading of the data. An experimental prediction value is determined indicating a predicted usable life of the head based on the evaluation of the experimental performance. Based on the experimental prediction value, it is determined whether to change the current default write policy for the at least one write-assistive component for future non-experimental writes.
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公开(公告)号：US09997186B1
公开(公告)日：2018-06-12
申请号：US15889419
申请日：2018-02-06
发明人： Puneet Bhargava , Remmelt Pit
IPC分类号： G11B5/60
CPC分类号： G11B5/6011 , G11B5/60
摘要： A data storage device is disclosed comprising a head actuated over a disk, wherein the head comprises a fly height actuator configured to control a fly height of the head over the disk. A plurality of host read commands are received from a host, and a performance metric associated with accessing the disk to execute the host read commands is measured. When the performance metric indicates the data storage device is operating with a performance margin, the fly height actuator is controlled to increase the fly height of the head over the disk, wherein the performance metric consists of at least one of a throughput of the host read commands and a power consumption of the data storage device.
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公开(公告)号：US20220385672A1
公开(公告)日：2022-12-01
申请号：US17333007
申请日：2021-05-27
发明人： Bernd Lamberts , Jeffrey Hobbet , Evan Richardson , Remmelt Pit , Ravi Singh
摘要： An approach to exchanging information between data storage devices (DSDs) within a secure data center and an external fleet health manager (FHM) application includes querying one or more DSDs for data to be analyzed, including providing a unique query identifier, whereby a particular DSD responsively provides (i) a device identifier identifying itself, (ii) a random key code for authentication and integrity purposes, (iii) the data to be analyzed, and (iv) the query identifier for the FHM application to verify. The FHM application can then digitally sign a corrective action payload, using the key code from the particular DSD, including the query identifier and the device identifier and a recommended corrective action, and transmit the signed corrective action payload to the data center for application to the particular DSD, whereby the DSD can execute pre-defined fundamental repair action operation(s) corresponding to the corrective action for in-situ repair.
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