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    Techniques for data prefetching
    1.
    发明授权
    Techniques for data prefetching 有权
    数据预取技术

    公开(公告)号：US08667224B1

    公开(公告)日：2014-03-04

    申请号：US12004300

    申请日：2007-12-20

    Applicant: Rong Yu ,  Orit Levin-Michael ,  John W. Lefferts ,  Pei-Ching Hwang ,  Peng Yin ,  Yechiel Yochai ,  Dan Aharoni ,  Qun Fan ,  Stephen R. Ives

    Inventor： Rong Yu ,  Orit Levin-Michael ,  John W. Lefferts ,  Pei-Ching Hwang ,  Peng Yin ,  Yechiel Yochai ,  Dan Aharoni ,  Qun Fan ,  Stephen R. Ives

    IPC: G06F12/00

    CPC classification number: G06F12/0862 ,  G06F2212/6024

    Abstract: Described are techniques for processing a data operation in a data storage system. A front-end component of the data storage system receives the data operation. In response to receiving the data operation, the front-end component performs first processing. The first processing includes determining whether the data operation is a read operation requesting to read a data portion which results in a cache miss; and if said determining determines that the data operation is a read operation resulting in a cache miss, performing read miss processing. Read miss processing includes sequential stream recognition processing performed by the front-end component to determine whether the data portion is included in a sequential stream.

    Abstract translation: 描述了用于处理数据存储系统中的数据操作的技术。 数据存储系统的前端组件接收数据操作。 响应于接收到数据操作，前端组件执行第一处理。 第一处理包括确定数据操作是否是请求读取导致高速缓存未命中的数据部分的读取操作; 并且如果所述确定确定数据操作是导致高速缓存未命中的读取操作，则执行读出未命中处理。 读未命中处理包括由前端组件执行的顺序流识别处理，以确定数据部分是否包括在顺序流中。

    Techniques for fault tolerant data storage
    2.
    发明授权
    Techniques for fault tolerant data storage 有权
    容错数据存储技术

    公开(公告)号：US07577866B1

    公开(公告)日：2009-08-18

    申请号：US11167704

    申请日：2005-06-27

    Applicant: Qun Fan ,  Ofer E. Michael

    Inventor： Qun Fan ,  Ofer E. Michael

    IPC: G06F11/00

    CPC classification number: G06F11/1076 ,  G06F2211/1057 ,  G06F2211/1059

    Abstract: Described are techniques for performing data recovery processing for two failed devices included in a set of devices. It is determined whether the two failed devices are each one of the data devices, a horizontal parity device, or a diagonal parity device. Each of the data devices is partitioned into N−1 data segments. The horizontal parity device includes N horizontal parity segments each including parity information for a horizontal grouping of N−1 of the data segments. The diagonal parity device includes N diagonal parity segments each including parity information for a diagonal grouping of N−1 of the data segments. Recovery processing is performed to recover two failed devices in accordance with the diagonal parity device, the horizontal parity device, and the data devices.

    Abstract translation: 描述了用于对包括在一组设备中的两个故障设备执行数据恢复处理的技术。 确定两个故障设备是否是数据设备，水平奇偶校验设备或对角奇偶校验设备中的每一个。 每个数据设备被划分为N-1个数据段。 水平奇偶校验设备包括N个水平奇偶校验段，每个水平奇偶校验段包括数据段N-1的水平分组的奇偶校验信息。 对角奇偶校验装置包括N个对角奇偶校验段，每个奇偶校验段包括数据段N-1的对角线分组的奇偶校验信息。 执行恢复处理以根据对角奇偶校验设备，水平奇偶校验设备和数据设备来恢复两个故障设备。

    Mirrored memory
    3.
    发明授权
    Mirrored memory 有权
    镜像记忆

    公开(公告)号：US07472221B1

    公开(公告)日：2008-12-30

    申请号：US10812291

    申请日：2004-03-29

    Applicant: Jerome J. Cartmell ,  Qun Fan ,  Steven T. McClure ,  Robert DeCrescenzo ,  Haim Kopylovitz ,  Eli Shagam

    Inventor： Jerome J. Cartmell ,  Qun Fan ,  Steven T. McClure ,  Robert DeCrescenzo ,  Haim Kopylovitz ,  Eli Shagam

    IPC: G06F12/00

    CPC classification number: G06F12/06 ,  G06F11/2069 ,  G06F11/2087

    Abstract: Accessing data memory includes writing data to a first memory location and to a second memory location in response to a request to write data to a memory address that corresponds to both locations, where the first and second memory locations are mirrored, in response to a request to read data from the memory address, reading data from the first memory location or the second memory location based on load balancing, and accessing data from the second memory location in response to a request to access data at the memory address when memory hardware corresponding to the first memory location has failed. Accessing the data memory may include requesting access to a specific one of the first and second memory locations. The memory address may contain a portion that is common to both the first memory location and the second memory location. Hardware coupled to the memory may cause data written using the memory address to be automatically written to the first memory location and the second memory location.

    Abstract translation: 响应于响应于请求向第一存储器位置和第二存储器位置写入数据到第二存储器位置和第二存储器位置的响应于将数据写入与两个位置对应的存储器地址的请求，其中第一和第二存储器位置被镜像 从存储器地址读取数据，基于负载平衡从第一存储器位置或第二存储器位置读取数据，以及当对应于存储器地址的存储器硬件的存储器硬件的响应于访问存储器地址上的数据的请求时，从第二存储器位置访问数据 第一个内存位置失败。 访问数据存储器可以包括请求访问第一和第二存储器位置中的特定的一个。 存储器地址可以包含第一存储器位置和第二存储器位置两者共同的部分。 耦合到存储器的硬件​​可能导致使用存储器地址写入的数据被自动写入第一存储器位置和第二存储器位置。

    Multilevel speed regulation jack
    6.
    发明授权
    Multilevel speed regulation jack 失效
    多级调速千斤顶

    公开(公告)号：US07040091B2

    公开(公告)日：2006-05-09

    申请号：US10755852

    申请日：2004-01-12

    Applicant: Qun Fan

    Inventor： Qun Fan

    IPC: F16D31/02

    CPC classification number: B66F3/42 ,  F15B3/00 ,  F15B7/04

    Abstract: A multilevel speed regulation jack includes an input oil cylinder, an output oil cylinder, and a fluid conduit member between the cylinders. The output oil cylinder includes a cylinder body containing an annular space and a tube piston, which fits in the annular space. A sliding sleeve of the tube piston is movably positioned in the annular space. An annular in-flow oil chamber is formed between the end annular surface of the tube piston and the cylinder body, and a central in-flow oil chamber is formed between the inner central surface of the piston and the cylinder body. The fluid conduit member includes at least two parallel fluid channels connected to the central in-flow oil chamber and the annular in-flow oil chamber, respectively. A control valve in one of the fluid channels opens/closes the channel. The jack can automatically switch between different jacking speeds based on the load sensed by the system and therefore has a high jacking efficiency.

    Abstract translation: 多级调速千斤顶包括输入油缸，输出油缸和气缸之间的流体导管构件。 输出油缸包括容纳环形空间的圆筒体和装配在环形空间中的管状活塞。 管活塞的滑动套筒可移动地定位在环形空间中。 在活塞的端部环形表面和气缸体之间形成环形的流动油室，并且在活塞的内部中心表面和气缸体之间形成有中心流入式油室。 流体导管构件包括至少两个平行的流体通道，其分别连接到中心流入油室和环形流入油室。 一个流体通道中的控制阀打开/关闭通道。 基于系统感测到的负载，千斤顶可以在不同的起动速度之间自动切换，因此具有高的起重效率。

    Multilevel speed regulation jack and method of operation
    10.
    发明授权
    Multilevel speed regulation jack and method of operation 失效
    多级调速千斤顶及其操作方法

    公开(公告)号：US06748740B2

    公开(公告)日：2004-06-15

    申请号：US10253964

    申请日：2002-09-24

    Applicant: Qun Fan

    Inventor： Qun Fan

    IPC: F16D3102

    CPC classification number: B66F3/42 ,  F15B3/00 ,  F15B7/04

    Abstract: A multilevel speed regulation method for a jack and a multilevel speed regulation jack use a hydraulic speed regulation line which includes at least two parallel hydraulic sub-lines extending between the input and output cylinders and the pressure applied by the output cylinder against the load is taken as the control signal to control the opening and closure of the hydraulic sub-lines or their combination at different speed levels. Application of the method in this invention provides the jack with the capability to automatically transfer between different speed levels in the case of different loads, and thus the lifting efficiency is improved. Additionally, this invention also provides a multilevel speed regulation jack, in which a hydraulic speed regulation line of at least three speed levels is connected in series between the input and output cylinders. This hydraulic speed regulation line consists of at least two parallel hydraulic sub-lines. The jack in this invention is capable of transferring between different lifting speeds, and thus the lifting efficiency of the jack is enhanced.

    Abstract translation: 用于千斤顶和多级速度调节千斤顶的多级速度调节方法使用液压调速线，其包括在输入和输出气缸之间延伸的至少两个并联的液压子线，并且由输出气缸抵抗负载施加的压力被采取 作为用于控制液压副线或其组合在不同速度水平下的打开和关闭的控制信号。 本发明方法的应用提供了千斤顶在不同载荷情况下能够在不同速度水平之间自动转换的能力，从而提高提升效率。 此外，本发明还提供了一种多级速度调节千斤顶，其中至少三个速度水平的液压调速线串联连接在输入和输出气缸之间。 该液压调速线由至少两根平行的液压子线组成。 本发明的千斤顶能够在不同的提升速度之间传递，从而增强了千斤顶的提升效率。

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