Virtual storage devices
    21.
    发明申请
    Virtual storage devices 审中-公开
    虚拟存储设备

    公开(公告)号:US20080109632A1

    公开(公告)日:2008-05-08

    申请号:US12006624

    申请日:2008-01-04

    IPC分类号: G06F12/10

    摘要: Accessing stored data includes providing a virtual storage area having a table of pointers that point to sections of at least two other storage areas, where the virtual storage area contains no sections of data, in response to a request for accessing data of the virtual storage area, determining which particular one of the other storage areas contain the data, and accessing the data on the particular one of the other storage areas using the table of pointers. Accessing stored data may also include associating a first one of the other storage areas with the virtual storage area, where the virtual area device represents a copy of data of the first one of the other storage areas. Accessing stored data may also include causing all of the pointers of the table to initially point to sections of the first one of the other storage areas when the virtual storage area is initially associated with the first one of the other storage areas. The storage areas may be storage devices. The sections may be tracks.

    摘要翻译: 访问存储的数据包括提供虚拟存储区域,该虚拟存储区域具有指向表的指针表,该表指向虚拟存储区域不包含数据段的至少两个其他存储区域的区段,响应于​​访问虚拟存储区域的数据的请求 确定其他存储区域中的哪一个包含数据,以及使用指针表访问其他存储区域中的特定一个的数据。 访问存储的数据还可以包括将其他存储区域中的第一个与虚拟存储区域相关联,其中虚拟区域设备表示其他存储区域中的第一个的数据的副本。 访问存储的数据还可以包括当虚拟存储区域最初与其他存储区域中的第一个存储区域相关联时,导致表的所有指针最初指向其他存储区域中的第一个的区段。 存储区域可以是存储设备。 这些部分可以是轨道。

    Restoring virtual devices
    22.
    发明授权
    Restoring virtual devices 有权
    恢复虚拟设备

    公开(公告)号:US07266572B2

    公开(公告)日:2007-09-04

    申请号:US10306659

    申请日:2002-11-27

    IPC分类号: G06F12/00 G06F17/30

    摘要: Restoring data includes providing data in a first storage area that contains sections of data, providing data in a second storage area where the second type has, for each section of data thereof, at least one of: a pointer to a corresponding section of data of the first storage area and a pointer to corresponding section of data of a third storage area of the first type. In one embodiment, a sections of the first storage area are replaced with pointers to the third storage area. In other embodiments, sections of a fourth storage area of the first type are replaced with pointers to the third storage area and optionally with pointers to the first storage area. In another embodiment, data is copied from the second storage area to a third storage area of the second type.

    摘要翻译: 恢复数据包括在包含数据段的第一存储区域中提供数据,在第二类型具有的第二存储区域中为数据的每个部分提供数据,其中至少一个指针指向相应部分的数据 第一存储区域和指向第一类型的第三存储区域的数据的相应部分的指针。 在一个实施例中,第一存储区域的一部分被替换成指向第三存储区域的指针。 在其他实施例中,第一类型的第四存储区域的部分被替换为指向第三存储区域的指针,并且可选地指示到第一存储区域的指针。 在另一个实施例中,将数据从第二存储区域复制到第二类型的第三存储区域。

    Method and apparatus for making independent data copies in a data processing system
    25.
    发明授权
    Method and apparatus for making independent data copies in a data processing system 有权
    在数据处理系统中进行独立数据拷贝的方法和装置

    公开(公告)号:US07099875B2

    公开(公告)日:2006-08-29

    申请号:US10601359

    申请日:2003-06-23

    IPC分类号: G06F17/30

    摘要: A method for copying data from a source disk storage device to a destination disk storage device. In response to a copy command from a requesting host application identifying the storage locations in source and destination disk storage devices, an environment is established. Thereafter a calling system receives an immediate response that the copy operation is complete even though no data has been copied. Application programs may access storage locations in either the source or the destination disk storage device during the copy phase. A copy program transfers the date on a track-by-track basis to the storage locations in the destination disk storage device. Procedures assure that any data access to a particular track in either the source or destination disk storage devices by any application prior to the transfer of that track are accommodated to maintain data integrity.

    摘要翻译: 一种将数据从源盘存储装置复制到目的地盘存储装置的方法。 响应于来自请求主机应用程序的复制命令,识别源和目标磁盘存储设备中的存储位置,建立了环境。 此后,即使没有复制数据,呼叫系统也会立即收到复制操作完成的即时响应。 应用程序可以在复制阶段访问源或目标磁盘存储设备中的存储位置。 复制程序将逐日的日期传送到目标磁盘存储设备中的存储位置。 程序确保在传送该轨道之前由任何应用程序访问源磁盘存储设备或目标磁盘存储设备中的特定磁道的任何数据访问以维护数据完整性。