incremental backup


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incremental backup

(operating system)
A kind of backup that copies all files which have changed since the date of the previous backup. The first backup of a file system should include all files - a "full backup". Call this level 0. The next backup could also be a full level 0 backup but it is usually much quicker to do a level 1 backup which will include only those files which have changed since the level 0 backup. Together the level 0 and level 1 backups will include the latest version of every file. Level 1 backups can be made until, say, the backup tape is nearly full, after which we can switch to level 2. Each level includes those files which have changed since the last backup at a lower level. The more levels you use, the longer it will take to restore the latest version of a file (or all files) if you don't know when it was last modified.

Compare differential backup.
References in periodicals archive ?
The advantage of taking an incremental backup rather than a full backup is that it can usually be made more quickly, and it occupies less storage space (either on disk or tape).
New features such as Smart Sector backup of XFS data volumes, incremental backup with remote consolidation, an improved graphical user interface and Inline Data Deduplication Compression, streamline the backup process saving you time and making more efficient use of storage space.
3 tb data) on an arcserve d2d incremental backup schedule.
According to the company, the software can help users to comprehensively backup network data, including schedule backup, full backup, incremental backup, differential backup into local hard drives, external hard drives, CD/DVD, tape device and other storage devices.
In the event of a recovery, the full backup tape is restored followed by the incremental backup tapes.
Each incremental backup includes only the log of the operations since the last backup: when the database needs to be restored, Arkeia restores the last total backup of the database information as well as the MySQL binary logs.
Once connected, the unit's exclusive patent-pending "Automatic Launcher" technology initiates either a full or incremental backup as designated by the user or IT manager.
There are database agents, image-based agents to backup millions of files as one large image, block level incremental backup agents to increase the speed of the image-based agents, open-file agents, and a host of other similar agents.
Economies of incremental backup - Due to the additional time penalties of incremental tape restores and because tape restores frequently fail, many IT departments keep copies of full (Level 0) backups in their tape libraries.
More specifically, incremental backup points track the changes of the index file and the changes at the sector-level.
The only software product to provide data protection for Oracle on Open VMS, "SDP provides the power of centralized backup/archive management, online backup and restore, incremental backup, and automated storage management functions," said STORServer President John Pearring.
Complete and multiple incremental backup images of the entire appliance server are automatically created.

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