I asked about the differences between the levels of backup and I got (sofar) two different answers (thanks to you both), so I still do not know for sure:
Nicolas Ecarnot wrote: > Level n backup is a backup where you save what has changed since the > last level n backup. period. Gertjan van Oosten wrote: > A level N backup includes all files modified since the last level M > backup where M < N. So a level 1 backup includes all files changed > since the last level 0 backup; a level 2 backup includes all files > changed since the last level 1 backup (or if there was no such backup, > it includes all files changed since the last level 0 backup), etc. > A level 0 backup includes all files, period. That are two different ways, the first I normally call INCREMENTAL, the second I normally call DIFFERENTIAL. I prefer the second, because mostly you will not need every tape, but only the first (full) and the last, and not all others in between. Some more questions: - in theory you can get an infinite level (no limit) backup ? - the more low-level backups you see (0 and 1), the better Amanda can handle the dumpcycle and tape capacity ? Or the other way round, Amanda will try to make as much level 0 backups as possible but based on the dumpcycle and capacity she will choose to do more level 1,2,3,4 backups in between ? tia Jeroen Heijungs Het Muziektheater Amsterdam