On Fri, 2004-12-24 at 23:40 -0500, Adam Aube wrote: > Joao Clemente wrote: > > > In the latest thread about "Synchronize two servers" it was > > talked about incremental backups. Well, can you quick-start me > > in this topic? > > An incremental backup is done by backing up all files that have changed > since the last full or incremental backup. How this file list is tracked > depends on the backup program used (some might use a filesystem flag, > others might use modification timestamps). > > The downside of incremental backups is that, to do a full restore, you need > the last full backup and ALL the incremental backups since the last full. > > A better alternative is a differential backup, which is all files that have > changed since the last full backup. This is much easier to restore, because > all you need is the last full backup and the last differential backup.
Note that "differential" is not a universally-used term. For example, the VMS "BACKUP /INCREMENTAL" is what you call a differ- ential backup. -- ----------------------------------------------------------------- Ron Johnson, Jr. Jefferson, LA USA PGP Key ID 8834C06B I prefer encrypted mail. "Basically, I got on the plane with a bomb. Basically, I tried to ignite it. Basically, yeah, I intended to damage the plane." RICHARD REID, tried to blow up American Airlines Flight 63
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