I don't think there are "full" nor "diferential" backup with Dirvish.
Dirvish builds directory stuctures containing references (links) to files on disk. Each snapshot can be considered a full backup. However overall disk space used is optimized by using hard links, which means that each single file (or version of file) will be stored on disk just once. This is why a Dirvish bank cannot span multiple filesystems (because hard links are not allowed across multiple filesystems). I hope that helps. > Am 09.03.2010 13:03, schrieb Ali Jawad: > >> Hm..I got slightly confused here...let's suppose I keep a 7 day backup >> history and 1 monthly backup. >> >> The 7 day backups are full backups and the monthly backup is a full >> backup ? Or are they differential / incremental ? >> > > If I've understood dirvish correctly, the monthly backup is the full > backup and the 7-day-backups are differential backups - but with added > hardlinks [1] to the files in the full (monthly) backup, so that they > look like a full backup if you go into the directory of the daily backup. > > -cord > > [1] http://en.wikipedia.org/wiki/Hard_link#Example > -- José Juan Montes Área de Sistemas - Aitire C./ Príncipe Nº 34, Principal, Oficina 3 36201 Vigo, Pontevedra Teléfono: +34 986 163 050 www.aitire.es
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