OPTIMIZING AUTOMATIC DELETION OF BACKUP FILES

摘要

Various methods and systems are described for reclaiming used data storage space in a data storage system. In one embodiment, a system is provided for reclaiming space in a non-volatile memory storing a backup file. Here, a memory-reclaiming module stores information about the backup file in the non-volatile memory and synchronizes the information in the non-volatile memory with a copy of the information in a volatile memory. A policy that governs a deletion of the backup file is accessed. The memory-reclaiming module also retrieves the copy of the information from the volatile memory and deletes the backup file based on the policy and the copy of the information.