On Wed, 15 Sep 2004 14:14:08 -0500, Eli Carter <eli.carter@xxxxxxxx> wrote: > Use rdiff-backup (mentioned in other comments). > Set up some simple policy on how long to keep which backups. > Provide a simple 'restore lost file from backup' GUI (and commandline) > utilities. > > The "simple" policy I would advocate would be to keep incremental > backups on this schedule: > One per day for the last week. > One per week for the last month[1] > One per month for the last N months, where N <= 14 [2], and have N > automatically fluctuate as disk space on the server is consumed and > freed. (May warn the user when it is about to be decreased.) > [1] Define "month" to mean "4 weeks" for simplicity. > [2] For a year, N = 52/4 = 13, and add one so you can get last April's > tax return you inadvertantly deleted. rdiff-backup doesn't allow for that finegrained of a policy currently. removing of old incrementals is only exposed with a "remove later than this point" option. You'd have to hook into current rdiff-backup development discussions about the likelyhood of that feature being expanded to allow for culling of increments in dateranges while leaving some. For example i run rdiff-backup nightly, and then tell it to remove increments older than 1 month old. There is no way for me to tell it things like "remove everything older than 1 month except for 1 increment as close to the start of each month as possible" -jef"rdiff-backup --make-me-a-sandwich"spaleta
