Elizabeth Schwartz wrote: > This is a somewhat loose question but we're still in the brainstorming > stage.... > > We're currently outsourcing all our backups to central IT, who uses > Legato. This is expensive. We'd like to cut our backup costs while > continuing to take advantage of the Legato team's infrastructure for > full/archival/DR backups. > > Seems like the currently popular open source backup options are Amanda > and Bacula. Rsync also becomes a contender if we're doing > disk-to-disk. > > Am I correct in thinking that amanda uses /etc/amandates, bacula uses > /etc/dumpdates, Legato uses its own database, and rsync checks the > files on disk against the existing archive, so none of these systems > would run interference with each other? > Am I missing any obvious good choices? > > rdiff-backup uses rsync and differentials so you can have <n> versions of your backups but the differences are stored as compressed files instead of taking up gobs of space. If the only change is a few files, then the only thing in the next backup is a few compressed files of differences. This makes it very easy to retrieve differences and see a history of changes.
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