备份版本 meaning in English

backuversion

Number of days to retain a backup version after that version becomes inactive
备份版本变为非活动后保留该版本的天数
Maximum number of backup versions to retain for files that still exist on the client
为仍然存在于客户机上的文件保留的最大备份版本号。
Maximum number of backup versions to retain for files that have been deleted on the client
为已从客户机上删除的文件保留的最大备份版本号
Number of days to retain the last backup version of an object that has been deleted on the client
保留已从客户机上删除的某一对象的最新备份版本的天数