Patent ID: 7634507
Filing Date: 2009-12-15
Classification: G06F,Y10S

Abstract:
1. A method, comprising: creating a data log structure on a storage device coupled to an application server to store a backup data generated by a filter module in a continuous backup environment; buffering the backup data generated by the filter module through a memory module that transfers the backup data to the data log structure on the storage device based on an occurrence of an event; utilizing a paged memory of the memory module to buffer the backup data when a storage capacity of the memory module crosses a memory threshold in the continuous backup environment; distinguishing a write associated to the paged memory from at least one of the backup data and the data write of the application server at the filter module using the detection algorithm when the paged memory accesses at least one of a page file and a swap volume on the storage device to buffer the backup data; and allowing the write associated to the paged memory to pass through the filter module to prevent at least one of a system crash and the recursion loop that occurs when the filter module makes the redundant copy of the write during the transition of the write associated to the paged memory to the at least one of the page file and the swap volume on the storage device.