Patent ID: 8464010
Filing Date: 2013-06-11
Classification: G06F

Abstract:
1. A method for ensuring periodic data backup control in a virtualized storage system having a point-in-time copy function operable to copy first data into a cascade and comprising steps of: creating an incremental map of production data using storage from a physical storage associated with a target virtual disk; selecting, by a storage targeting component, the target virtual disk for one of a full copy or an incremental copy of the first data; triggering, by a periodic backup component, a periodic point-in-time copy of the first data to a virtual disk in the cascade; testing, by a testing component, a status of the full copy, the incremental copy and the periodic point-in-time copy; and responsive to the status, splitting, by a cascade splitting component, 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, and to insert a second target virtual disk between the first data and the full copy, the incremental copy, and the periodic point-in-time copy, wherein: