Storage system snapshot assisted by SSD technology
    1.
    发明授权
    Storage system snapshot assisted by SSD technology 有权
    存储系统快照由SSD技术协助

    公开(公告)号:US08200922B2

    公开(公告)日:2012-06-12

    申请号:US12316902

    申请日:2008-12-17

    IPC分类号: G06F12/00

    摘要: A method and apparatus for taking a snapshot of a storage system employing a solid state disk (SSD). A plurality of mapping tables in the SSD store data needed to create a one or more point in time snapshots and a current view of the SSD. In response to a write command, the SSD executes its normal write process and updates its mapping tables to indicate the current view of the SSD and additionally retains the original data in a table of pointers to the original data, as the snapshot of an earlier state of the SSD. In the preferred embodiment, the innate ability of SSDs to write data to a new location is used to perform a point-in-time copy with little or no loss in performance in performing the snapshot.

    摘要翻译: 一种用于拍摄采用固态盘(SSD)的存储系统的快照的方法和装置。 SSD中的多个映射表存储创建一个或多个时间点快照和SSD的当前视图所需的数据。 响应于写入命令,SSD执行其正常写入处理并更新其映射表以指示SSD的当前视图,并且将原始数据另外保留在指向原始数据的指针表中,作为较早状态的快照 的SSD。 在优选实施例中,SSD用于将数据写入新位置的固有能力用于执行时间点复制,而在执行快照时性能很少或没有损失。

    Storage system snapshot assisted by SSD technology
    2.
    发明申请
    Storage system snapshot assisted by SSD technology 有权
    存储系统快照由SSD技术协助

    公开(公告)号:US20100153620A1

    公开(公告)日:2010-06-17

    申请号:US12316902

    申请日:2008-12-17

    IPC分类号: G06F12/16 G06F12/00 G06F12/02

    摘要: A method and apparatus for taking a snapshot of a storage system employing a solid state disk (SSD). A plurality of mapping tables in the SSD store data needed to create a one or more point in time snapshots and a current view of the SSD. In response to a write command, the SSD executes its normal write process and updates its mapping tables to indicate the current view of the SSD and additionally retains the original data in a table of pointers to the original data, as the snapshot of an earlier state of the SSD. In the preferred embodiment, the innate ability of SSDs to write data to a new location is used to perform a point-in-time copy with little or no loss in performance in performing the snapshot.

    摘要翻译: 一种用于拍摄采用固态盘(SSD)的存储系统的快照的方法和装置。 SSD中的多个映射表存储创建一个或多个时间点快照和SSD的当前视图所需的数据。 响应于写入命令,SSD执行其正常写入处理并更新其映射表以指示SSD的当前视图,并且将原始数据另外保留在指向原始数据的指针表中,作为较早状态的快照 的SSD。 在优选实施例中,SSD用于将数据写入新位置的固有能力用于执行时间点复制,而在执行快照时性能很少或没有损失。