K, 18 jaan 2012 kirjutas Horacio <[email protected]>:
In my configuration file I have tapecycle 30 dumpcycle 7 days runspercycle 7 storing on 30 virtual disks of 10GB each and running amdump every day in the morning. As I understand this will make one full backup a week and 6 incremental backups the other days of the week. This is ok but using amrecover history (see below) I can see it only keeps 29 days of backup data.
I counted 30 backups in the output you posted.
If I want one year of backup data do I need to create 365 virtual disks and set tapecycle to 365?? What if I need to keep 10 years of backup data due to client requirements?
If you need to be able to restore your data into the state as it was on any given day within past year, then yes, you need to have a backup for each day. That makes 365 backups per year or approximately 3650 backups for 10 years (keep in mind the leap years).
I myself have two Amanda configurations - one that runs on every weekday and keeps backups for ca 6 months, and another that runs full backup of everything twice a year and is kept "forever".
-- Toomas Aas
