公开(公告)号：US07506116B2

公开(公告)日：2009-03-17

申请号：US11184358

申请日：2005-07-19

申请人： William Robert Haselton ,  Christopher John Stakutis ,  Kevin Michael Stearns

发明人： William Robert Haselton ,  Christopher John Stakutis ,  Kevin Michael Stearns

IPC分类号： G06F12/16 ,  G06F17/30

CPC分类号： G06F11/1451 ,  G06F11/1448 ,  G06F11/1469 ,  G06F2201/84 ,  Y10S707/99953

摘要： Provided are a method, system and program for maintaining and using information on updates to a data group after a logical copy is made of the data group. A first logical copy of a data group in a storage at a first point-in-time is established. The first logical copy maintains data to reconstruct the data group as of the first point-in time after the data group has been updated following the first-point-in time. Indication is made of regions of the data group updated at the storage after establishing the first logical copy. A second logical copy of the data group in the storage at a second point-in-time is established. The second logical copy maintains data to reconstruct the data group as of the second point-in time after the data group has been updated following the second point-in time. The indicated regions of the data group updated between the first and second points-in-time are saved in a change list.

摘要翻译： 提供了在对数据组进行逻辑复制之后维护和使用关于对数据组的更新的信息的方法，系统和程序。 建立在第一时间点的存储器中的数据组的第一逻辑副本。 第一个逻辑副本维护数据，以在数据组在第一个时间点之后被更新之后的第一个时间点重建数据组。 指示在建立第一逻辑副本之后在存储器处更新的数据组的区域。 建立在第二时间点的存储器中的数据组的第二逻辑副本。 第二逻辑副本维护数据以在第二时间点之后更新数据组之后的第二个时间点重建数据组。 在第一和第二时间点之间更新的数据组的指示区域保存在更改列表中。