公开(公告)号：AT557346T

公开(公告)日：2012-05-15

申请号：AT10724831

申请日：2010-06-09

Applicant: IBM

Inventor： BEEKEN CHRISTOPHER ,  FUENTE CARLOS ,  JEWELL COLIN ,  SCALES WILLIAM

IPC: G06F11/14

Abstract: 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 at least one of the full copy, the incremental copy and the periodic point-in-time copy on the first data.