On Tuesday 20 October 2009 16:34:10 Adam Williams wrote: > I'm doing this because it's what management wants, to be able to restore > a file from any backup, so the backups will have to span indefinitely. > There are times when i've been asked to restore a file that was last > touched by a user 3, 5, etc years ago and at some more recent point was > deleted. And to carry that out, I'm asking if I have the proper > configuration for that. I am open to suggestions on how often I should > be doing full and incremental backups.
Hi Adam, Storing indefinitely is only a disk capacity issue. The question is: to what granularity do you want old backups kept? Do you want to be able to recover the file 2 years, 3 months, and 2 days ago, and also the one 2 years, 3 months, and 3 days ago? If so you have no choice but to take a backup every day and set retention to a very high level. On the other hand, if it is acceptable to dailies for 2 months, and then weeklies after that for 6 months, and then only monthlies - that can easily be done with FullKeepCnt, FullKeepCntMin, FullAgeMax, and the Incr equivalents. For instance, for my fulls I go back about 5 months, but in decreasing granularity, with: $Conf{FullPeriod} = '6.97'; $Conf{FullKeepCnt} = [ '4', '3', '4' ]; That is 4 weeks, then 3 period of 2 weeks, then 4 periods of 4 weeks. But if you want just want dailies for 5 years, the settings would be: $Conf{FullPeriod} = '6.97'; $Conf{FullKeepCnt} = '260'; $Conf{FullKeepCntMin} = '260'; $Conf{FullAgeMax} = '1825'; $Conf{IncrPeriod} = '0.97'; $Conf{IncrKeepCnt} = '1560'; $Conf{IncrKeepCntMin} = '1560'; $Conf{IncrAgeMax} = '1825'; This will actually keep files for longer (one day longer for each day the PC misses a backup). You could set the KeepCnt, KeepCntMin, and AgeMax variables to higher if you want longer. Regards, Tyler -- "About astrology and palmistry: they are good because they make people vivid and full of possibilities. They are communism at its best. Everybody has a birthday and almost everybody has a palm." -- Kurt Vonnegut, "Wampeters, Foma and Granfalloons" ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/