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公开(公告)号：US10073735B1
公开(公告)日：2018-09-11
申请号：US14526184
申请日：2014-10-28
Applicant: Seagate Technology LLC
Inventor： Jun Cai , Jeetandra Kella , ChuanPeng Ong , Brian T Edgar
CPC classification number: G06F11/1048
Abstract: Systems and methods are disclosed for a seeding mechanism for error detection codes. An error detection code may be generated using specifically modified seed input and stored to data sectors not containing valid data. A data storage device may determine if read attempts are directed to an invalid sector by analysis of the stored error detection code. In some embodiments, an apparatus may determine a first error detection code stored to a target data storage sector does not match a second error detection code calculated for the target data storage sector, compare the first error detection code to a modified error code value to determine whether the target data storage sector contains valid data, and return an indication that the target data storage sector does not contain valid data when the error detection code matches the modified error code value.
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公开(公告)号：US09678864B2
公开(公告)日：2017-06-13
申请号：US14559327
申请日：2014-12-03
Applicant: Seagate Technology LLC
Inventor： Jun Cai , AndiSumaryo Sutiawan , Jeetandra Kella , ChuanPeng Ong , Mark Allen Gaertner , Brian T. Edgar
CPC classification number: G06F12/0246 , G06F11/1016 , G06F11/1072 , G06F2206/1014 , G06F2212/7201
Abstract: A device includes one or more data storage media having a main storage area, and includes a non-volatile cache memory and a controller. The controller stores a plurality of data packets into a plurality of physical locations in the main storage area. Each of the data packets is associated with a different logical block address (LBA), and each of the physical locations is associated with a different physical location address (PLA). The controller generates mapping information that links the different LBAs to the different PLAs. Upon detecting a soft error when reading a data packet stored in a physical location, the controller relocates the data packet associated with the soft error to a physical location of the non-volatile cache memory. The controller also marks the physical location as a suspect location. The controller updates the mapping information to reflect the relocation of the data packet associated with the soft error.
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公开(公告)号：US20160162208A1
公开(公告)日：2016-06-09
申请号：US14559327
申请日：2014-12-03
Applicant: Seagate Technology LLC
Inventor： Jun Cai , AndiSumaryo Sutiawan , Jeetandra Kella , ChuanPeng Ong , Mark Allen Gaertner , Brian T. Edgar
CPC classification number: G06F12/0246 , G06F11/1016 , G06F11/1072 , G06F2206/1014 , G06F2212/7201
Abstract: A device includes one or more data storage media having a main storage area. The device also includes a non-volatile cache memory and a controller. The controller stores a plurality of data packets into a plurality of physical locations in the main storage area of the one or more data storage media. Each of the plurality of data packets is associated with a different logical block address (LBA), and each of the plurality of physical locations is associated with a different physical location address. The controller generates mapping information that links the different LBAs associated with the different data packets to the different physical location addresses associated with the different physical locations. Upon detecting a soft error when reading at least one data packet of the plurality of data packets stored in at least one physical location of the plurality of physical locations, the controller relocates the at least one data packet associated with the soft error to at least one physical location of a non-volatile cache memory. The controller also makes an indication that the at least one physical location of the plurality of physical locations is a suspect location. The controller updates the mapping information to reflect the relocation of the at least one data packet associated with the soft error to the at least one physical location in the non-volatile cache memory.
Abstract translation: 一种设备包括具有主存储区域的一个或多个数据存储介质。 该设备还包括非易失性高速缓冲存储器和控制器。 控制器将多个数据分组存储到一个或多个数据存储介质的主存储区域中的多个物理位置。 多个数据分组中的每一个与不同的逻辑块地址（LBA）相关联，并且多个物理位置中的每一个与不同的物理位置地址相关联。 控制器生成将与不同数据分组相关联的不同的LBA链接到与不同物理位置相关联的不同物理位置地址的映射信息。 当读取存储在多个物理位置中的至少一个物理位置中的多个数据分组中的至少一个数据分组时检测到软错误，控制器将与软错误相关联的至少一个数据分组重新定位到至少一个 非易失性缓存的物理位置。 控制器还指示多个物理位置中的至少一个物理位置是可疑位置。 控制器更新映射信息以反映与软错误相关联的至少一个数据分组的重定位到非易失性高速缓冲存储器中的至少一个物理位置。
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Patent Agency Ranking
公开(公告)号：US10755742B2
公开(公告)日：2020-08-25
申请号：US16256900
申请日：2019-01-24
Applicant: Seagate Technology LLC
Inventor： Jun Cai , Brian T. Edgar
Abstract: An implementation of a system disclosed herein provides a method for managing data streams of sequential nature, wherein the method provides for determining that a sequence of incoming write commands are associated with an LBA range mapped to a source band and writing data of the incoming write commands to physical blocks of a destination band assigned to the LBA range of the source band such that the data of the incoming write commands is written according to a sequential order of data receipt and in a forward write direction to sequentially fill physically-consecutive blocks in the destination band.
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公开(公告)号：US11295778B1
公开(公告)日：2022-04-05
申请号：US17093746
申请日：2020-11-10
Applicant: Seagate Technology LLC
Inventor： Thaik Thaik Aung , Xin Li , Jeetandra Kella , Wajid Ali , Jun Cai , JianZhong Zhang
Abstract: Systems and methods are disclosed for resource allocation for multi-actuator systems. In some examples, a data storage device can include two or more independently moveable voice coil motor (VCM) actuators where the resources of the system to operate the VCM actuators are divided. The disclosure here describes methods to allocate or re-allocate the divided resources, such as unused resources, to a VCM actuator that has a need for more resources. The methods and systems herein can also be applied to other actuator systems.
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公开(公告)号：US11592984B2
公开(公告)日：2023-02-28
申请号：US17018016
申请日：2020-09-11
Applicant: Seagate Technology LLC
Inventor： Harry Tiotantra , Jun Cai , Kai Chen , WeiQing Zhou , Feng Shen
Abstract: A method includes receiving at a storage device a command from a host. When learning is active on the storage device, an initial parameter value of a plurality of parameter values is used for performing a first action of a plurality of actions for the command. The first action is performed using the initial parameter value of the plurality of parameter values for the command The first parameter value is incremented to a next parameter value of the plurality of parameter values for the command for use in reperforming the first action.
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公开(公告)号：US20220083230A1
公开(公告)日：2022-03-17
申请号：US17018016
申请日：2020-09-11
Applicant: Seagate Technology LLC
Inventor： Harry Tiotantra , Jun Cai , Kai Chen , WeiQing Zhou , Feng Shen
Abstract: A method includes receiving at a storage device a command from a host. When learning is active on the storage device, an initial parameter value of a plurality of parameter values is used for performing a first action of a plurality of actions for the command. The first action is performed using the initial parameter value of the plurality of parameter values for the command The first parameter value is incremented to a next parameter value of the plurality of parameter values for the command for use in reperforming the first action.
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公开(公告)号：US20190172490A1
公开(公告)日：2019-06-06
申请号：US16256900
申请日：2019-01-24
Applicant: Seagate Technology LLC
Inventor： Jun Cai , Brian T. Edgar
CPC classification number: G11B20/1217 , G06F3/0604 , G06F3/061 , G06F3/0631 , G06F3/064 , G06F3/065 , G06F3/0676 , G11B2020/1238
Abstract: An implementation of a system disclosed herein provides a method for managing data streams of sequential nature, wherein the method provides for determining that a sequence of incoming write commands are associated with an LBA range mapped to a source band and writing data of the incoming write commands to physical blocks of a destination band assigned to the LBA range of the source band such that the data of the incoming write commands is written according to a sequential order of data receipt and in a forward write direction to sequentially fill physically-consecutive blocks in the destination band.
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