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    Data management for a data storage device using a last resort zone
    1.
    发明授权
    Data management for a data storage device using a last resort zone 有权
    使用最后一个度假区域的数据存储设备的数据管理

    公开(公告)号：US09263088B2

    公开(公告)日：2016-02-16

    申请号：US14295497

    申请日：2014-06-04

    申请人： Western Digital Technologies, Inc.

    发明人： Robert M. Fallone ,  Alec D. Parken ,  Teik Ee Yeo

    IPC分类号： G11B20/12 ,  G11B19/04

    CPC分类号： G11B20/1217 ,  G11B19/041 ,  G11B19/046 ,  G11B20/1889 ,  G11B2020/1242 ,  G11B2020/1869

    摘要： A data storage device (DSD) includes a non-volatile memory (NVM) media for storing data. A last resort zone of the NVM media is associated with a higher risk of data loss or data corruption than other portions of the NVM media and is reserved as unavailable for storing data. It is determined whether a current data storage capacity and/or an environmental condition for the NVM media has reached a threshold. The last resort zone is set as available for storing data if it is determined that the threshold has been reached and data is written in the last resort zone.

    摘要翻译： 数据存储设备（DSD）包括用于存储数据的非易失性存储器（NVM）介质。 与NVM媒体的其他部分相比，NVM媒体的最后一个区域与数据丢失或数据损坏的风险相关，并被保留为不可用于存储数据。 确定NVM媒体的当前数据存储容量和/或环境条件是否已经达到阈值。 如果确定已达到阈值并将数据写入最后的度假区域，则最后的度假区域被设置为可用于存储数据。

    System and method for optimizing garbage collection in data storage
    2.
    发明授权
    System and method for optimizing garbage collection in data storage 有权
    数据存储中垃圾收集优化的系统和方法

    公开(公告)号：US08706985B1

    公开(公告)日：2014-04-22

    申请号：US13948495

    申请日：2013-07-23

    申请人： Western Digital Technologies, Inc.

    发明人： William B. Boyle ,  Robert M. Fallone

    IPC分类号： G06F12/00 ,  G06F12/02 ,  G06F12/10

    CPC分类号： G06F12/0253 ,  G06F12/0238 ,  G06F12/0246 ,  G06F12/0802

    摘要： The present invention is directed to systems and methods for optimizing garbage collection in data storage. The data storage may be a shingled disk drive or a non-volatile solid-state memory device. Garbage collection is optimized by selectively saving data read from certain locations of the data storage in response to host read commands and using the saved data for subsequent garbage collection operations. The decision of whether to save data may be based on a number of criteria, including whether the data is located in an area of the data storage that is due to be garbage collected in the near future. In this manner, certain garbage collection operations can be performed without having to re-read the saved data.

    摘要翻译： 本发明涉及用于优化数据存储中的垃圾收集的系统和方法。 数据存储器可以是带状闪烁的磁盘驱动器或非易失性固态存储器件。 通过选择性地保存从数据存储的某些位置读取数据以响应主机读取命令并使用保存的数据进行后续垃圾回收操作来优化垃圾收集。 是否存储数据的决定可以基于多个标准，包括数据是否位于数据存储区域，这将在不久的将来被垃圾回收。 以这种方式，可以执行某些垃圾回收操作，而不必重新读取保存的数据。

    Write pointer management for a disk drive
    4.
    发明授权
    Write pointer management for a disk drive 有权
    为磁盘驱动器写入指针管理

    公开(公告)号：US09383923B1

    公开(公告)日：2016-07-05

    申请号：US13662353

    申请日：2012-10-26

    申请人： Western Digital Technologies, Inc.

    发明人： James N. Malina ,  Joo Peng Teh ,  Sang Huynh ,  Carl E. Barlow ,  Robert M. Fallone ,  William B. Boyle ,  Glenn Cheng ,  Kuang Hwa Teo ,  Peng Lee Liang ,  Daniel D. Reno

    IPC分类号： G06F13/00 ,  G06F13/28 ,  G06F3/06 ,  G11B20/12

    CPC分类号： G06F3/0608 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/0676 ,  G11B20/10527 ,  G11B20/1217

    摘要： Write pointer management for a disk drive including a disk having a plurality of sectors and a non-volatile memory (NVM) for storing data. Data is sequentially written sector by sector on the disk. The data written in a sector includes a write status indicator indicating that data has been written in the sector. A write pointer is stored on the disk or the NVM as a check-pointed write pointer. The write pointer corresponds to a current sector for writing data on the disk. During a write pointer recovery process, the check-pointed write pointer is retrieved, and at least one write status indicator is scanned in a range of sectors from the sector corresponding to the retrieved check-pointed write pointer and a last sector to identify the current sector for writing data. The write pointer is set to correspond to the identified current sector.

    摘要翻译： 为包含具有多个扇区的磁盘的磁盘驱动器写入指针管理和用于存储数据的非易失性存储器（NVM）。 磁盘上逐个扇区依次写入数据。 写入扇区的数据包括指示数据已被写入扇区的写状态指示符。 一个写入指针作为一个检查指针的写入指针存储在磁盘或NVM上。 写指针对应于在磁盘上写入数据的当前扇区。 在写指针恢复过程期间，检索检查指示写指针，并且在与所检索的检查指针写指针和最后一个扇区相对应的扇区的范围内扫描至少一个写状态指示符，以识别当前 部门编写数据。 写指针被设置为对应于所识别的当前扇区。

    Data management for data storage device with different track density regions
    6.
    发明授权
    Data management for data storage device with different track density regions 有权
    具有不同轨道密度区域的数据存储设备的数据管理

    公开(公告)号：US09129628B1

    公开(公告)日：2015-09-08

    申请号：US14522451

    申请日：2014-10-23

    申请人： Western Digital Technologies, Inc.

    发明人： Robert M. Fallone ,  William B. Boyle

    IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B5/09 ,  G11B20/12 ,  G11B5/012 ,  G11B20/10

    CPC分类号： G11B5/596 ,  G11B5/012 ,  G11B5/09 ,  G11B5/5521 ,  G11B5/5526 ,  G11B20/10 ,  G11B20/10212 ,  G11B20/1217 ,  G11B20/1889

    摘要： Managing data stored in a Data Storage Device (DSD) including at least one disk for storing data. Data is written in a first region of the at least one disk with a first track density. A frequency of access is determined for the data written in the first region, and the frequency of access is compared to a threshold. Based on the comparison, a copy of the data written in the first region is written in a second region of the at least one disk with a second track density different than the first track density.

    摘要翻译： 管理存储在数据存储设备（DSD）中的数据，包括至少一个用于存储数据的磁盘。 数据被写入具有第一轨道密度的至少一个盘的第一区域中。 对写入第一区域的数据确定访问频率，并将访问频率与阈值进行比较。 基于该比较，将写入第一区域的数据的副本写入到具有与第一轨道密度不同的第二轨道密度的至少一个盘的第二区域中。