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1. 发明授权

US09747043B2 Write reordering in a hybrid disk drive 有权
公开(公告)号：US09747043B2
公开(公告)日：2017-08-29
申请号：US14956280
申请日：2015-12-01
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Fernando Anibal Zayas , Richard M. Ehrlich , Eric R. Dunn
IPC分类号： G06F12/02 , G06F3/06 , G11B5/012 , G11B20/10 , G11B20/12 , G06F12/0868 , G06F12/0804
CPC分类号： G06F3/0611 , G06F3/064 , G06F3/0647 , G06F3/068 , G06F12/0804 , G06F12/0868 , G06F2212/1024 , G06F2212/217 , G06F2212/222 , G06F2212/253 , G06F2212/281 , G06F2212/305 , G06F2212/313 , G06F2212/461 , G06F2212/70 , G11B5/012 , G11B20/10 , G11B20/12 , G11B2020/1294 , G11B2220/45
摘要： A hybrid drive and associated methods increase the rate at which data are transferred to a nonvolatile storage medium in the hybrid drive. By using a large nonvolatile solid state memory device as cache memory for a magnetic disk drive, a very large number of write commands can be cached and subsequently reordered and executed in an efficient manner. In addition, strategic selection and reordering of only a portion of the write commands stored in the nonvolatile solid state memory device increases efficiency of the reordering process.

2. 发明授权

US09536619B2 Hybrid-HDD with improved data retention 有权
标题翻译：具有改进的数据保留的混合HDD
公开(公告)号：US09536619B2
公开(公告)日：2017-01-03
申请号：US14723087
申请日：2015-05-27
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Richard M. Ehrlich , Eric R. Dunn , Hiroshi Sukegawa
IPC分类号： G11C16/04 , G11C16/34 , G11C16/16 , G11C16/26 , G11C29/08
CPC分类号： G11C16/3418 , G11C16/16 , G11C16/26 , G11C16/3459 , G11C29/08 , G11C29/50004
摘要： Data are refreshed in a nonvolatile solid-state device to significantly reduce the likelihood of data retention errors. Test data are written in a region of the nonvolatile solid-state device when user data are stored in the nonvolatile solid-state device, and are subsequently read to detect the possibility of data retention errors occurring when the associated user data are read. The test data may be a portion of the user data or a predetermined test pattern. To increase sensitivity to incipient charge leakage that may compromise the user data, the test data may be written using a modified write process and/or read with a modified read operation. The nonvolatile solid-state device may be employed as part of a solid-state drive or as the flash-memory portion of a hybrid hard disk drive.
摘要翻译：数据在非易失性固态设备中刷新，以显着降低数据保留错误的可能性。当用户数据存储在非易失性固态设备中时，测试数据被写入非易失性固态设备的区域中，并且随后被读取以检测当读取相关联的用户数据时发生数据保持错误的可能性。测试数据可以是用户数据的一部分或预定的测试模式。为了增加对可能损害用户数据的初始电荷泄漏的敏感性，可以使用经修改的写入处理和/或读取修改的读取操作来写入测试数据。非易失性固态器件可以用作固态驱动器的一部分或作为混合硬盘驱动器的闪速存储器部分。

3. 发明授权

US11422710B2 Handling of verification data in disk drive cache 有权
公开(公告)号：US11422710B2
公开(公告)日：2022-08-23
申请号：US16994375
申请日：2020-08-14
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
发明人： Richard M. Ehrlich , Eric R. Dunn , Fernando A. Zayas , Shoichi Aoki
IPC分类号： G06F3/06
摘要： In a magnetic recording drive that includes a shingled magnetic recording (SMR) region and a conventional magnetic recording (CMR) region, the quantity of validation data that is stored by the CMR region is reduced. In the magnetic recording drive, verification data stored in the CMR region is invalidated under certain circumstances, including when an SMR band is closed, when an SMR band is indicated by a host to be reused, when an SMR band is indicated to be finished, and when a last data track of an SMR has data stored therein.

4. 发明授权

US09804784B2 Low-overhead storage of a hibernation file in a hybrid disk drive 有权
公开(公告)号：US09804784B2
公开(公告)日：2017-10-31
申请号：US15204739
申请日：2016-07-07
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Richard M. Ehrlich , Eric R. Dunn , Fernando Anibal Zayas , Thorsten Schmidt
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28 , G06F3/06 , G06F12/02 , G06F9/44
CPC分类号： G06F3/061 , G06F3/0614 , G06F3/0646 , G06F3/0659 , G06F3/0679 , G06F3/068 , G06F9/4418 , G06F12/0246 , G06F2212/217 , G06F2212/7202
摘要： A hybrid drive and associated methods provide low-overhead storage of a hibernation file in the hybrid hard disk drive. During operation, the hybrid drive allocates a portion of solid-state memory in the drive that is large enough to accommodate a hibernation file associated with a host device of the hybrid drive. In addition to the erased memory blocks that are normally present during operation of the hybrid drive, the portion of solid-state memory allocated for accommodating the hibernation file may include over-provisioned memory blocks, blocks used to store a previous hibernation file that has been trimmed, and/or non-dirty blocks.

5. 发明授权

US08982499B1 Timing of power state change in a disk drive based on disk access history 有权
标题翻译：基于磁盘访问历史的磁盘驱动器中的电源状态更改的时序
公开(公告)号：US08982499B1
公开(公告)日：2015-03-17
申请号：US13975207
申请日：2013-08-23
申请人： Kabushiki Kaisha Toshiba
发明人： Richard M. Ehrlich , Mine Wonkyung Budiman , Eric R. Dunn , Annie Mylang Le , Fernando Anibal Zayas
IPC分类号： G11B15/18 , G11B5/012
CPC分类号： G06F3/0625 , G11B19/06 , G11B19/2072
摘要： A data storage device that includes a magnetic storage device and a non-magnetic nonvolatile storage device that measures a hit rate of read/write commands that result in accesses to the non-magnetic nonvolatile storage device, and adjusts a length of a time period, such as an idle time, based on the hit rate. The duration of the time period can be set each time the magnetic storage device is accessed. Upon expiration of the time period, if the magnetic storage device has not yet been accessed, the magnetic storage device is changed from a higher power consumption state to a lower power consumption state.
摘要翻译：一种数据存储装置，包括磁存储装置和非磁性非易失性存储装置，其测量导致对非磁性非易失性存储装置的访问的读/写命令的命中率，并调整时间段的长度，例如空闲时间，基于命中率。可以在每次访问磁存储设备时设置时间段的持续时间。在该时间段到期时，如果磁存储装置尚未被存取，则磁存储装置从较高功耗状态变为较低功耗状态。

6. 发明授权

US11036436B2 Seek scheduling in a split actuator drive 有权
公开(公告)号：US11036436B2
公开(公告)日：2021-06-15
申请号：US16589098
申请日：2019-09-30
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
发明人： Gary W. Calfee , Richard M. Ehrlich , Thorsten Schmidt , Eric R. Dunn
IPC分类号： G06F3/06
摘要： Systems and methods for scheduling the execution of disk access commands in a split-actuator hard disk drive are provided. In some embodiments, while a first actuator of the split actuator is in the process of performing a first disk access command (a victim operation), a second disk access command (an aggressor operation) is selected for and executed by a second actuator of the split actuator. The aggressor operation is selected from a queue of disk access commands for the second actuator, and is selected based on being the disk access command in the queue that can be initiated sooner than any other disk access command in the queue without disturbing the victim operation.

7. 发明申请

US20210096769A1 SEEK SCHEDULING IN A SPLIT ACTUATOR DRIVE 有权
公开(公告)号：US20210096769A1
公开(公告)日：2021-04-01
申请号：US16589098
申请日：2019-09-30
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
发明人： Gary W. Calfee , Richard M. Ehrlich , Thorsten Schmidt , Eric R. Dunn
IPC分类号： G06F3/06
摘要： Systems and methods for scheduling the execution of disk access commands in a split-actuator hard disk drive are provided. In some embodiments, while a first actuator of the split actuator is in the process of performing a first disk access command (a victim operation), a second disk access command (an aggressor operation) is selected for and executed by a second actuator of the split actuator. The aggressor operation is selected from a queue of disk access commands for the second actuator, and is selected based on being the disk access command in the queue that can be initiated sooner than any other disk access command in the queue without disturbing the victim operation.

8. 发明授权

US10223277B2 SMR drive with multi-level write-cache for high random-write performance 有权
公开(公告)号：US10223277B2
公开(公告)日：2019-03-05
申请号：US15455000
申请日：2017-03-09
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Eric R. Dunn
IPC分类号： G06F12/00 , G06F12/0875 , G06F12/1009 , G06F3/06 , G11B20/12
摘要： A shingled magnetic recording (SMR) hard disk drive (HDD) is configured with a multi-level cache. To expedite execution of read commands, the SMR HDD is configured to generate and store a Bloom filter in a memory that can be quickly accessed by the drive controller whenever data are stored in certain levels of the multi-level cache. When data are flushed from one level of media cache to an SMR band included in a lower level of media cache, a Bloom filter is generated based on the logical block addresses (LBAs) stored in that SMR band. Thus, when the SMR HDD receives a read command for data that are associated with a particular LBA and are stored in an SMR region of the HDD, the drive controller can query the Bloom filter for each different SMR region of the HDD in which data for that LBA can possibly be stored.

9. 发明授权

US09396755B2 Temperature-defined data-storage policy for a hybrid disk drive 有权
标题翻译：混合磁盘驱动器的温度定义数据存储策略
公开(公告)号：US09396755B2
公开(公告)日：2016-07-19
申请号：US13772143
申请日：2013-02-20
申请人： Kabushiki Kaisha Toshiba
发明人： Mine Wonkyung Budiman , Thorsten Schmidt , Richard M. Ehrlich , Eric R. Dunn
IPC分类号： G11B5/02 , G11B20/10 , G11B5/55 , G11B19/04
CPC分类号： G11B20/10527 , G11B5/5565 , G11B19/046 , G11B2020/10833
摘要： Data is stored in a hybrid drive that includes a magnetic storage medium and a non-volatile solid-state device using a temperature-defined data-storage policy. According to the temperature-defined data storage policy, the drive can perform operations for modulating the temperature of the drive, minimizing increased wear on memory cells in the non-volatile solid-state device, and/or preventing data stored in the non-volatile solid-state device from being lost.
摘要翻译：数据存储在包括磁存储介质和使用温度定义数据存储策略的非易失性固态设备的混合驱动器中。根据温度定义的数据存储策略，驱动器可以执行用于调制驱动器的温度的操作，最小化非易失性固态设备中的存储器单元的增加的磨损，和/或防止存储在非易失性存储器中的数据固态设备丢失。

10. 发明申请

US20200020357A1 DATA-CENTER DRIVE WITH SPLIT-ACTUATOR THAT INCREASES READ/WRITE PERFORMANCE VIA DATA STRIPING 审中-公开
公开(公告)号：US20200020357A1
公开(公告)日：2020-01-16
申请号：US16205711
申请日：2018-11-30
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Eric R. Dunn , Thorsten Schmidt
IPC分类号： G11B20/12 , G06F12/10 , G11B5/48 , G11B5/55 , G06F3/06
摘要： A method for writing data in a disk drive having actuators each controlling arms extending over disk surfaces, including: receiving a write command from a host; receiving from the host data; dividing the data into data blocks; determining: a first surface from the disk surfaces where data is written by a first head of an arm controlled by a first actuator of the actuators; and a second surface from the disk surfaces where data is written by a second head of an arm controlled by a second actuator of the actuators; determining storage blocks of each of the first and the second surface; and writing first data blocks of the divided data blocks to the determined storage blocks of the first surface using the first head while writing second data blocks of the divided data blocks to the determined storage blocks of the second surface using the second head.

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