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    • 2. 发明授权
    • Device, method, and computer program product for data migration
    • 用于数据迁移的设备,方法和计算机程序产品
    • US08009541B2
    • 2011-08-30
    • US12643194
    • 2009-12-21
    • Kazuhiro OzekiShinobu FujiharaHiroshi ItagakiTakeshi Ishimoto
    • Kazuhiro OzekiShinobu FujiharaHiroshi ItagakiTakeshi Ishimoto
    • G11B7/00G11B5/09
    • G06F3/061G06F3/0647G06F3/0653G06F3/0686
    • A device, method, and computer program product are provided for migrating pieces of data from a first recording location to a second recording location based on access frequency. The device comprises an obtaining unit for obtaining, for each of the pieces of data, first information indicating the number of times any data has been read from the first recording location after the piece of data is written to the first recording location and second information indicating the number of times the piece of data has been read from the first recording location. Moreover, the device comprises a tracking unit for tracking access frequency with respect to each of the pieces of data using the first information and the second information. Furthermore, the device comprises a determining unit for determining recording positions of each of the pieces of data in the second recording location based on the tracked access frequency.
    • 提供了一种设备,方法和计算机程序产品,用于基于访问频率将数据片段从第一记录位置迁移到第二记录位置。 所述设备包括:获取单元,用于为每个所述数据获取指示在将所述数据写入所述第一记录位置之后从所述第一记录位置读取任何数据的次数的第一信息,以及指示 从第一记录位置读取数据的次数。 此外,该设备包括跟踪单元,用于使用第一信息和第二信息来跟踪相对于每条数据的访问频率。 此外,该设备包括:确定单元,用于基于跟踪的访问频率确定第二记录位置中的每个数据段的记录位置。
    • 4. 发明申请
    • DEVICE, METHOD, AND COMPUTER PROGRAM PRODUCT FOR DATA MIGRATION
    • 用于数据移动的设备,方法和计算机程序产品
    • US20110149707A1
    • 2011-06-23
    • US12643194
    • 2009-12-21
    • KAZUHIRO OZEKIShinobu FujiharaHiroshi ItagakiTakeshi Ishimoto
    • KAZUHIRO OZEKIShinobu FujiharaHiroshi ItagakiTakeshi Ishimoto
    • G11B9/00
    • G06F3/061G06F3/0647G06F3/0653G06F3/0686
    • A device, method, and computer program product are provided for migrating pieces of data from a first recording location to a second recording location based on access frequency. The device comprises an obtaining unit for obtaining, for each of the pieces of data, first information indicating the number of times any data has been read from the first recording location after the piece of data is written to the first recording location and second information indicating the number of times the piece of data has been read from the first recording location. Moreover, the device comprises a tracking unit for tracking access frequency with respect to each of the pieces of data using the first information and the second information. Furthermore, the device comprises a determining unit for determining recording positions of each of the pieces of data in the second recording location based on the tracked access frequency.
    • 提供了一种设备,方法和计算机程序产品,用于基于访问频率将数据片段从第一记录位置迁移到第二记录位置。 所述设备包括:获取单元,用于为每个所述数据获取指示在将所述数据写入所述第一记录位置之后从所述第一记录位置读取任何数据的次数的第一信息,以及指示 从第一记录位置读取数据的次数。 此外,该设备包括跟踪单元,用于使用第一信息和第二信息来跟踪相对于每条数据的访问频率。 此外,该设备包括:确定单元,用于基于跟踪的访问频率确定第二记录位置中的每个数据段的记录位置。
    • 7. 发明授权
    • Method for controlling an external storage system having multiple external storage devices
    • 用于控制具有多个外部存储装置的外部存储系统的方法
    • US07181640B2
    • 2007-02-20
    • US10348672
    • 2003-01-22
    • Takeshi IshimotoTohru Sumiyoshi
    • Takeshi IshimotoTohru Sumiyoshi
    • G06F11/00
    • G06F3/068G06F3/0617G06F3/0635G06F3/0658
    • An external storage device is part of a ring-like first route formed by connecting multiple external storage devices to each other via communication channels. The external storage device comprises a first connection unit having a first input port and a first output port, and a second connection unit having a second output port and a second input port that are connected to a first input port and a first output port of an adjacent external storage device on the first route, respectively, to form one communication channel of the first route. When both connection units are enabled, information received by the first input port and the second input port is sent from the second output port and the first output port, respectively. When one of the connection units is disabled, information received by the input port of an enabled connection unit is sent from the output port of the enabled connection unit. If a communication failure has been detected in one communication channel of the first route, connections to the first spare communication channel are enabled, and connections to the failure-detected communication channel are disabled.
    • 外部存储设备是通过经由通信信道将多个外部存储设备彼此连接而形成的环状第一路由的一部分。 外部存储装置包括具有第一输入端口和第一输出端口的第一连接单元和具有连接到第一输入端口和第二输出端口的第二输出端口和第二输入端口的第二连接单元, 分别在第一路线上相邻的外部存储设备,以形成第一路由的一个通信信道。 当两个连接单元被使能时,分别从第二输出端口和第一输出端口发送由第一输入端口和第二输入端口接收的信息。 当禁用其中一个连接单元时,从启用的连接单元的输出端口发送由启用的连接单元的输入端口接收到的信息。 如果在第一路由的一个通信信道中检测到通信故障,则启用与第一备用通信信道的连接,并且禁用与故障检测通信信道的连接。