CLOUD-BASED HIERARCHICAL SYSTEM PRESERVATION

摘要

The efficient backing up of a hierarchical system in cloud blob storage. The hierarchical structure of the system as it existed at a prior instance in time is reconstructed. A change journal that represents changes in the file system that prior instant in time is then used to formulate an updated file system hierarchy as it exists at a second instant in time. An updated injected representation of the file system, and updated file system reversal information is then formulated and provided to cloud blob storage. The injected representation of the file system is a one-to-one function of the content of the file system, in that the reversal information can be used to recover the content of the file system. Injected representations of various nodes in the system hierarchy may also be remotely stored.

主权项

1. A method for remotely preserving content of a parent node in a hierarchical system into cloud blob storage, the method comprising:
an act of performing a statistically injective function on content of a child node of a hierarchical system to formulate a child injected representation of the child node, as well as child reversal information usable to reverse the child injected representation back into the content of the child node; an act of performing a statistically injective function on at least the child injected representation and an attribute of the child node to formulate a parent injected representation of the parent node, and parent reversal information usable to reverse the parent injected representation of the parent node into the child injected representation and the attribute of the child node; an act of providing the parent injected representation and the parent reversal information to cloud blob storage; and an act of providing the child injected representation and the child reversal information to the cloud blob storage.