But i am lost whith policy retention.
Actually my setings are
intervalle pour la sauvegarde incrémentielle de fichiers:12 hours
Intervalle pour la sauvegarde complète de fichiers: 7 days
Nombre maximal de sauvegardes fichiers incrémentielles: 7
Nombre minimal de sauvegardes fichiers incrémentielles: 2
Nombre maximal de sauvegardes fichiers complètes: 4
Nombre minimal de sauvegardes fichiers complètes: 2
I notice that i have actually whith this policy about 1 month retention
Whith 1600Go maximum used on my backup store (on a 3TB Disk)
i would like change my policy fir having better retention
Ideally i would like to have
2 backups per day during 1 month (inc ?)
1 backup per month during 12 Month (full ?)
How can i set my policy to have this ?
I think
interval increm : 12 hours
interval full : 31 days
Mini incr : 62
max inc : 62
Mini full : 12
Maxi Full : 12
Do you think 3TB will be enough for this policiy ?
A little math is necessary:
Full Backup = X (Gb: Current + growth rate over last year / 12)
Incremental = Y (Gb: Max Size Changes)
If (X * 12) + (Y * 62) = Z
If Z > 3,000 then 3TB isn’t adequate
Yes, there is some wiggle room. But do you want to plan your backups around wiggle room?
For retention strategies like you are thinking about, perhaps go away from full/inc and use the archival feature. Think about how long and how often you want to archive data for and then add archival rules for that?