<p>A backup control apparatus for periodic data backup, in a virtualized storage system having a point-in-time copy function operable to copy first data into a cascade, comprises a storage targeting component for selecting a target virtual disk for one of a full copy or an incremental copy of the first data; a periodic backup component for triggering a periodic point-in-time copy of the first data to a virtual disk in the cascade; a testing component for testing a status of the full copy, the incremental copy and the periodic point-in-time copy; and a cascade splitting component responsive to the status for splitting the cascade to remove a dependency relationship of one or more of the full copy, the incremental copy and the periodic point-in-time copy on the first data.</p>
申请公布号
WO2010145973(A1)
申请公布日期
2010.12.23
申请号
WO2010EP58046
申请日期
2010.06.09
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION;BEEKEN, CHRISTOPHER, BARRY;FUENTE, CARLOS, FRANCISCO;JEWELL, COLIN, ROBERT;SCALES, WILLIAM, JAMES
发明人
BEEKEN, CHRISTOPHER, BARRY;FUENTE, CARLOS, FRANCISCO;JEWELL, COLIN, ROBERT;SCALES, WILLIAM, JAMES