SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT FOR GENERATING A CONSISTENT POINT IN TIME COPY OF DATA
    10.
    发明申请
    SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT FOR GENERATING A CONSISTENT POINT IN TIME COPY OF DATA 有权
    用于在时间复制数据中产生一致点的系统,方法和计算机程序产品

    公开(公告)号:US20080098187A1

    公开(公告)日:2008-04-24

    申请号:US11550621

    申请日:2006-10-18

    IPC分类号: G06F12/00

    摘要: A method for generating a consistent point in time copy of data, the method includes: selecting at least one selected data block to be copied from a source volume to a target volume in response to a request to generate a consistent point in time copy of multiple data blocks; waiting until the source volume is ready to send the at least one selected data block to a remote volume while queuing at least one data block modify request; de-queuing the at least one queued modify requests while copying the at least one selected data block from the source volume to the target volume; wherein the copying includes utilizing a first copying mechanism to copy a first selected data block if a request to modify the first selected block is de-queued before the first selected data block is copied to the target volume; else, the copying includes using a second copying mechanism that is slower than the first copying mechanism.

    摘要翻译: 一种用于产生数据的一致的时间点副本的方法,所述方法包括:响应于产生多个一致的时间点副本的请求,选择要从源卷复制到目标卷的至少一个所选择的数据块 数据块 等待直到源卷准备好在排队至少一个数据块修改请求时将所述至少一个所选择的数据块发送到远程卷; 在将所述至少一个所选择的数据块从所述源卷复制到所述目标卷时,将所述至少一个排队的修改请求排队; 其中所述复制包括利用第一复制机构来复制第一所选择的数据块,如果在所述第一所选数据块被复制到所述目标卷之前,如果修改所述第一所选块的请求被排队,则复制所述第一复制机制; 否则,复印包括使用比第一复印机构慢的第二复印机构。