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    • 7. 发明授权
    • Storage system, remote copy and management method therefor
    • 存储系统,远程复制和管理方法
    • US08307178B2
    • 2012-11-06
    • US13209578
    • 2011-08-15
    • Nobuhiro MakiYuri HiraiwaYoshiyuki NishiKatsuhisa MiyataAkira Deguchi
    • Nobuhiro MakiYuri HiraiwaYoshiyuki NishiKatsuhisa MiyataAkira Deguchi
    • G06F12/16
    • G06F11/2064G06F3/0619G06F3/065G06F3/0653G06F3/067G06F11/2074
    • A copy source storage controller received write data added with a time and issued from a host computer transfers the write data with the time to a copy destination storage controller. If there are a plurality of copy destination storage controllers, a representative copy destination storage controller compares times of write data copied to the plurality of copy destination storage controllers, and writes the write data in copy destination logical volumes in the sequential order of time. The representative copy destination storage controller judges that integrity of the write data is established, if a communication procedure is established with the copy destination storage controller and if the statuses of the copy source/destination logical volumes are coincident. In remote copy which guarantees integrity of write data and traverses a plurality of storage controllers, it is possible to judge at an optional time point whether integrity of write data can be guaranteed.
    • 复制源存储控制器接收到从主计算机发出的随时间增加的写入数据,将写入数据随时间传送到复制目的地存储控制器。 如果存在多个复制目的地存储控制器,则代表性复制目的地存储控制器比较复制到多个复制目的地存储控制器的写入数据的时间,并且按顺序将写入数据写入复制目的地逻辑卷。 如果与复制目的地存储控制器建立通信过程以及复制源/目的地逻辑卷的状态是否一致,则代表性复制目的地存储控制器判断写入数据的完整性。 在保证写入数据的完整性并遍历多个存储控制器的远程复制中,可以在可选的时间点判断是否可以保证写入数据的完整性。