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    • 2. 发明授权
    • Efficiently creating a snapshot of a large consistency group using multiple commands including a snapshot preparation command
    • 使用多个命令(包括快照准备命令)有效地创建大型一致性组的快照
    • US08407435B2
    • 2013-03-26
    • US12237846
    • 2008-09-25
    • Shachar FienblitSheli Rahav
    • Shachar FienblitSheli Rahav
    • G06F12/16G06F13/00
    • G06F11/1466
    • Preparation of a snapshot for data storage includes receiving a first command to prepare to create a snapshot of a set of data stored on at least one source storage volume in a data storage system. The data storage system is prepared to expedite creation of the snapshot in response to the first command. A second command to create the snapshot is received subsequent to the first command. The snapshot is created, in response to the second command, by copying the set of data onto at least one target storage volume at an event time. The set of data may comprise a consistency group comprising a set of data blocks, and preparing the system to create the snapshot may include reserving resources, throttling an incoming data rate, starting a timer after receiving the first command, and/or copying data from a plurality of storage volumes into a memory cache.
    • 准备用于数据存储的快照包括接收第一命令以准备创建存储在数据存储系统中的至少一个源存储卷上的一组数据的快照。 准备数据存储系统以响应于第一个命令加快创建快照。 在第一个命令之后接收到创建快照的第二个命令。 响应于第二个命令,通过在事件时间将该组数据复制到至少一个目标存储卷来创建快照。 数据集可以包括包括一组数据块的一致性组,并且准备创建快照的系统可以包括预留资源,限制输入数据速率,在接收到第一命令之后启动定时器,和/或从 将多个存储卷存储到存储器高速缓存中。