Hello All, I would like to ask a general Amanda backup 'strategy' question here, given by backup 'goals' below. I have a configured and working Amanda set-up but I want to try and fit a backup policy that I believe is best suited to our site around Amanda.
I have an 8-tape (DLT 35/70gb each) auto changer library linked to Amanda via mtx, this works well. I want to do a full backup of various file systems on a remote host once a week and then, ideally, incremental backups once a day to that same tape. At the end of a week's backup, the tape should switch. One week's backup is far less than a single tape's capacity. I would like to be able to hold 8 weeks worth of backups on tape, that is one tape a week and then reuse the oldest tape. I'm not sure this is possible with Amanda.. as I believe I can't append the daily incremental backups onto the same tape as the full backups. Is it the case that if I want to run Amanda every day that I would also have to use a tape every day, thus meaning the tapes in the library are all used after a week. I'm fixed in the number of tapes I can use and can't add/replace them, so they would get reused after a week and wouldn't provide much of a 'backup horizon'. If this isn't possible does anyone have some suggestions? I was thinking I could do the incremental backups to a hard disk area on the tape server each night and then run Amanda once a week to archive the full backups plus the HDD incremental ones. Many thanks in advance for everyone's thoughts. William.
