SYSTEM AND METHOD FOR BACKUP STORAGE GARBAGE COLLECTION

A storage for storing backups of virtual machines includes a persistent storage and a garbage collector. The persistent storage stores the backups. The garbage collector identifies an end of a backupgeneration session; in response to identifying the end of the backup generation session, the garbage collector performs a date analysis to identify a set of potentially stale backups of the backups; performs a continuity chain analysis of each backup of the set of potentially stale backups to identify a set of stale backups; and deletes each backup of the set of stale backups. 一种用于存储虚拟机的备份的存储装置包含永久性存储装置和垃圾收集器。所述永久性存储装置存储所述备份。所述垃圾收集器识别备份生成会话的结束；响应于识别所述备份生成会话的结束，所述垃圾收集器执行日期分析以识别所述备份的可能失效备份集；执行对所述可能失效备份集中的每个备份的连续性链分析以识别失效备份集；且删除所述失效备份集中的每个备份。