incremental backup - définition. Qu'est-ce que incremental backup
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Qu'est-ce (qui) est incremental backup - définition

BACKUP CONTAINING ONLY CHANGES SINCE THE LAST BACKUP
Incremental backups

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. (2004-03-01)
Incremental backup         
An incremental backup is one in which successive copies of the data contain only the portion that has changed since the preceding backup copy was made.Description of Full, Incremental, and Differential Backups.
backup         
  • From left to right, a [[DVD]] disc in plastic cover, a USB flash drive and an [[external hard drive]]
COPY OF COMPUTER DATA TAKEN AND STORED SO THAT IT MAY BE USED TO RESTORE THE ORIGINAL
Back up; Backups; Data backup; Backup and Recovery; Continuous backup; Near Continuous Backup; Near Continuous Data Protection; Backup copy; Backup & recovery; Backup storage; Backup types; Backup disk; Backup device; Backup tape; Full backup; Back-up; Back-Up; Back-Ups; BackUps; BackUp; Continuous Vaulting; Near continuous backup; Near-continuous backup; Near-continuous data protection; Near continuous data protection; Enterprise client-server backup; Backup and disaster recovery appliance; BDR appliance; BDR device; Backup and Disaster Recovery appliance; Backup copying
<operating system> ("back up" when used as a verb) A spare copy of a file, file system, or other resource for use in the event of failure or loss of the original. The term commonly refers to a copy of the files on a computer's disks, made periodically and kept on {magnetic tape} or other removable medium (also called a "dump"). This essential precaution is neglected by most new computer users until the first time they experience a disk crash or accidentally delete the only copy of the file they have been working on for the last six months. Ideally the backup copies should be kept at a different site or in a fire safe since, though your hardware may be insured against fire, the data on it is almost certainly neither insured nor easily replaced. See also backup software, differential backup, incremental backup, full backup. Compare archive, source code management. (2004-03-16)

Wikipédia

Incremental backup

An incremental backup is one in which successive copies of the data contain only the portion that has changed since the preceding backup copy was made. When a full recovery is needed, the restoration process would need the last full backup plus all the incremental backups until the point of restoration. Incremental backups are often desirable as they reduce storage space usage, and are quicker to perform than differential backups.