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1. 发明授权

US08879191B1 Disk drive modifying rotational position optimization algorithm to achieve target performance for limited stroke 有权
标题翻译：磁盘驱动器修改旋转位置优化算法，实现有限行程的目标性能
公开(公告)号：US08879191B1
公开(公告)日：2014-11-04
申请号：US13677136
申请日：2012-11-14
申请人： Western Digital Technologies, Inc.
发明人： Edwin S. Olds , Salman A. Nawaz
IPC分类号： G11B5/55 , G11B21/08 , G11B27/19
CPC分类号： G11B5/5547
摘要： A disk drive is disclosed comprising a head actuated over a disk, wherein a maximum radial movement of the head is limited. A plurality of access commands are stored in a command queue, and an access latency is determined for each command in the command queue, wherein the access latency is based at least on a seek latency for the head and a rotational latency for the disk. The access latency for each access command is increased by an offset based at least on a seek length for each access command, wherein the offset compensates for the limited maximum radial movement of the head. An access command is selected from the command queue based on the increased access latencies, and the selected access command is executed.
摘要翻译：公开了一种磁盘驱动器，其包括在磁盘上致动的磁头，其中磁头的最大径向移动受到限制。多个访问命令被存储在命令队列中，并且针对命令队列中的每个命令确定访问等待时间，其中访问等待时间至少基于头部的寻求延迟和盘的旋转等待时间。每个访问命令的访问延迟至少对于每个访问命令的搜索长度增加偏移，其中该偏移补偿了磁头的有限的最大径向运动。基于增加的访问延迟从命令队列中选择访问命令，并且执行所选择的访问命令。

2. 发明授权

US09466321B1 Angular position tracking of data accesses to mitigate risk of data loss 有权
标题翻译：数据访问的角位置跟踪，以减轻数据丢失的风险
公开(公告)号：US09466321B1
公开(公告)日：2016-10-11
申请号：US14732015
申请日：2015-06-05
申请人： Western Digital Technologies, Inc.
发明人： Wayne H. Vinson , Marika Meertens , Edwin S. Olds
IPC分类号： G11B15/18 , G11B5/596 , G11B27/10 , G11B27/34 , G11B15/43
CPC分类号： G11B5/59627 , G11B15/43 , G11B27/107 , G11B27/34 , G11B2220/90
摘要： Systems, apparatuses, and methods use angular position tracking in mitigating data loss risks stemming from adjacent track interference (ATI), wide area track erasure (WATER), and/or other issues. A storage device includes a rotational magnetic storage medium divided into a group of tracks and a controller communicably coupled to the rotational magnetic storage medium. The controller is configured to: determine, based on an angular position of a write operation within a group of tracks, whether the angular position of the write operation overlaps a previously written area in the group of tracks; in the event the angular position of the write operation overlaps the previously written area in the group of tracks, increment a counter; and in the event the counter exceeds a counter threshold, perform a data loss risk mitigation procedure.
摘要翻译：系统，装置和方法使用角位置跟踪来减轻来自相邻轨道干扰（ATI），广域轨迹擦除（WATER）和/或其他问题的数据丢失风险。存储装置包括被分成一组轨道的旋转磁存储介质和可通信地耦合到旋转磁存储介质的控制器。控制器被配置为：基于轨道组内的写入操作的角位置来确定写入操作的角位置是否与该组轨道中的预先写入的区域重叠; 在写操作的角位置与轨道组中的先前写入区域重叠的情况下，递增计数器; 并且在计数器超过计数器阈值的情况下，执行数据丢失风险缓解程序。

3. 发明授权

US09128639B1 Scheduling commands in a dependent array of disk drives 有权
标题翻译：在依赖的磁盘驱动器阵列中调度命令
公开(公告)号：US09128639B1
公开(公告)日：2015-09-08
申请号：US14065354
申请日：2013-10-28
申请人： Western Digital Technologies, Inc.
发明人： Wayne H. Vinson , Edwin S. Olds
IPC分类号： G06F13/00 , G06F13/28 , G06F3/06
CPC分类号： G06F3/0689 , G06F3/0611 , G06F3/0619 , G06F3/0659 , G06F3/0665
摘要： An array of disk drives is disclosed comprising a controller, a plurality of disk drives, wherein the controller is configured to transmit a first access command out of a group of access commands to a first disk drive in the array; transmit a plurality of the access commands out of the group of access commands to other disk drives in the array; and transmit a completion status to the first disk drive, wherein the completion status identifies a status of the plurality of access commands transmitted to the other disk drives.
摘要翻译：公开了一种磁盘驱动器阵列，其包括控制器，多个磁盘驱动器，其中所述控制器被配置为将一组访问命令中的第一访问命令发送到所述阵列中的第一磁盘驱动器; 将多个访问命令从该组访问命令中传送到该阵列中的其他磁盘驱动器; 并向第一磁盘驱动器发送完成状态，其中完成状态识别发送到其他磁盘驱动器的多个访问命令的状态。

4. 发明授权

US09195293B1 User controlled data storage device power and performance settings 有权
标题翻译：用户控制的数据存储设备的电源和性能设置
公开(公告)号：US09195293B1
公开(公告)日：2015-11-24
申请号：US13961799
申请日：2013-08-07
申请人： Western Digital Technologies, Inc.
发明人： Kevin S. Quillen , Edwin S. Olds , Danny J. Kastler
IPC分类号： G06F1/32
CPC分类号： G06F1/3268 , G06F1/3206 , G06F1/3212 , Y02D10/154 , Y02D10/174
摘要： Adjusting power and/or performance settings of a data storage device (DSD) in a system including the DSD and a host in communication with the DSD. A driver executed on the host defines user settings for the DSD and determines a state of the system. The driver commands the DSD to adjust power and/or performance settings for the DSD based on the state of the system and the user settings.
摘要翻译：调整系统中数据存储设备（DSD）的功率和/或性能设置，包括DSD和与DSD通信的主机。在主机上执行的驱动程序定义DSD的用户设置，并确定系统的状态。驱动程序命令DSD根据系统状态和用户设置调整DSD的电源和/或性能设置。

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