On Tuesday 27 May 2014 23:35:26 Alan McKinnon wrote: > On 27/05/2014 17:12, J. Roeleveld wrote: > > I have a yearly (full), monthly, weekly and daily. Each incremental is > > against the most recent one of itself or longer period. > > That means having to keep multiple snapshots active, which I prefer to > > avoid. > > > > But, it is a good idea for backing up desktops and laptops. > > I'm curious why you have yearly snapshots. I've yet to find any sane > production system where a yearly backup had any worth at all. Even > monthly is pushing it... > > Or do you do it to have a decent start point for incrementals?
It's to have a decent start point for incrementals. Below are the 2 biggest shares on the NAS: /dev/xvda17 7.1T 5.9T 1.2T 84% /data/unsorted /dev/xvda16 3.0T 2.4T 517G 83% /data/software It is impossible to do a full backup on a daily or even weekly basis. Previously, I had 1 full backup and then a daily incremental. This appears like a good idea, untill you need to restore the filesystem from backups when the crash occured 2 years later. That is 1 full backup and over 700 incrementals.... Currently, I do the following: Every year, a full backup Then, every month, I have an incremental based on either the yearly or previous monthly. Ditto for the weekly (but then based on monthly or weekly) And again for the daily. -- Joost
