发明名称 |
Maintaining and using information on updates to a data group after a logical copy is made of the data group |
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.
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申请公布号 |
US7506116(B2) |
申请公布日期 |
2009.03.17 |
申请号 |
US20050184358 |
申请日期 |
2005.07.19 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
HASELTON WILLIAM ROBERT;STAKUTIS CHRISTOPHER JOHN;STEARNS KEVIN MICHAEL |
分类号 |
G06F12/16;G06F17/30 |
主分类号 |
G06F12/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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