公开(公告)号：US20030056060A1

公开(公告)日：2003-03-20

申请号：US10090876

申请日：2002-03-04

Applicant: Seagate Technology LLC

Inventor： Mark D. Hertz ,  Philip E. Cloud ,  Travis D. Fox ,  Edwin S. Olds

IPC: G06F012/00

CPC classification number: G06F3/0659 ,  G06F3/0613 ,  G06F3/064 ,  G06F3/0676

Abstract: Method and apparatus for transferring data between a host device and a data storage device having a first memory space and a second memory space. The host issues access commands to store and retrieve data. The device stores write data associated with write commands in the first memory space pending transfer to the second memory space. An interface circuit evaluates relative proximity of first and second sets of LBAs associated with pending first and second write commands, and forms an adaptive bidirectional write skip mask when the sets of LBAs fit within a predetermined mask interval. The mask is preferably slidably adjustable to encompass both sets of LBAs and is preferably expandable to accommodate additional sets of LBAs. The data within the mask are treated as a combined write command and are thereafter written in an order corresponding to an order in which the data appear in the mask.

Abstract translation: 用于在主机设备和具有第一存储器空间和第二存储器空间的数据存储设备之间传送数据的方法和装置。 主机发出访问命令来存储和检索数据。 该设备将与写命令相关联的写数据存储在第一存储器空间中，等待传送到第二存储器空间。 接口电路评估与等待的第一和第二写入命令相关联的第一组和第二组LBA的相对接近度，并且当LBA组合在预定的屏蔽间隔内时形成自适应双向写入跳过掩码。 掩模优选地可滑动地调节以包含两组LBA，并且优选地可扩展以容纳另外的一组LBA。 掩码内的数据被视为组合写入命令，然后以与数据出现在掩码中的顺序相对应的顺序写入。

公开(公告)号：US20030200386A1

公开(公告)日：2003-10-23

申请号：US10303125

申请日：2002-11-22

Applicant: Seagate Technology LLC

Inventor： Mark D. Hertz ,  Stephen R. Cornaby ,  Travis D. Fox ,  Edwin S. Olds

IPC: G06F012/00

CPC classification number: G06F12/127 ,  G06F12/0862 ,  G06F12/0866

Abstract: A data storage device with a cache memory in communication with a control processor programmed with a data retention prioritization routine to effect data throughput with a host device. The data storage device includes an apparatus responsive to the control processor retrieving host data along with speculative data. The cache memory storing the host data in addition to the speculative data, wherein the speculative data includes both read on arrival data and read look ahead data. The control processor executing the data prioritization routine to prioritize removal of the host data from the cache memory prior to removal of the read on arrival data while maintaining persistence of the read look ahead data in the cache memory subsequent to removal of the read on arrival data.

Abstract translation: 一种数据存储设备，其具有与控制处理器通信的高速缓冲存储器，所述控制处理器利用数据保留优先级程序编程，以利用主机设备来实现数据吞吐量。 数据存储装置包括响应于控制处理器检索主机数据以及推测数据的装置。 高速缓存存储除了推测数据之外的主机数据，其中推测数据包括读取到达数据和预读数据。 执行数据优先级例程的控制处理器在去除读取到达数据之前优先从高速缓存存储器移除主机数据，同时在删除读取到达数据之后保持高速缓冲存储器中的读取的前瞻数据的持续性 。

公开(公告)号：US20030105919A1

公开(公告)日：2003-06-05

申请号：US10143235

申请日：2002-05-10

Applicant: Seagate Technology LLC

Inventor： Edwin S. Olds ,  Jack A. Mobley ,  Mark D. Hertz ,  Kenny T. Coker

IPC: G06F012/08

CPC classification number: G06F3/0601 ,  G06F2003/0697

Abstract: Method and apparatus for transferring data between a host device and a data storage device having a first memory space and a second memory space. The host issues access commands to store and retrieve data. The device stores commands in the first memory space pending transfer to the second memory space. An interface circuit evaluates relative proximity of first and second sets of LBAs associated with pending first and second commands, and delays promotion of later pending commands in front of earlier pending commands during an overlap condition. If the overlap is caused by performance enhancing features (PEF) the PEFs are disabled so the commands can be scheduled for disc access. Indicators are set in the commands to signal that a PEF has caused the overlap and that PEF can be disabled. Values are added to indicators in the commands such that the PEFs can be modified and avoid overlaps.

Abstract translation: 用于在主机设备和具有第一存储器空间和第二存储器空间的数据存储设备之间传送数据的方法和装置。 主机发出访问命令来存储和检索数据。 设备将命令存储在第一存储器空间中，等待传送到第二存储器空间。 接口电路评估与等待的第一和第二命令相关联的第一组和第二组LBA的相对接近度，并且在重叠条件期间延迟提前稍早的待命命令。 如果重叠是由性能增强功能（PEF）引起的，则PEF被禁用，因此命令可以被调度用于光盘访问。 在命令中设置指示信号，指示PEF已经引起重叠，并且可以禁用PEF。 将值添加到命令中的指示符中，以便可以修改PEF并避免重叠。