OneFS NDMP also supports incremental forever (level 10) backup. You can run a full backup before resuming the differential incremental backups. All subsequent level 9 incremental backups will become cumulative incremental backups after performing a level 9 incremental backup. OneFS detects the changed files or directories by ctime (change time) or mtime (modification time) of objects. Thereafter, incremental backup backs up the changed files since the last full or lower-level backup. The first backup of a path must be a full backup. Level-based backup: OneFS NDMP supports full backups (level 0) and incremental (levels 1 to 9) backups.The features give users more flexibility for NDMP backups. OneFS provides the following NDMP features to back up files. Incremental backup: An incremental backup backs up changed files under the same path of a full backup.Full backup: A full backup backs up all files and directories under a path.OneFS NDMP supports tar and dump backup formats for backup. An NDMP backup session can either be a full backup or an incremental backup.
This section describes the NDMP features supported by OneFS.
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