Retention Policy help needed
do I just need to set "delete versions older than 1 month from backup date" and "always keep the latest version" ? — P72endragon
Yes, that should work fine for the setup you mentioned.
If I did want to only keep a specific number of versions, I believe I'd set "keep number of versions for each file" - but how does that interact with the age setting? If a file changed regularly and hit the number limit before the age limit, would the earlier versions be removed to keep the version count down? Conversely, if the file didn't change very often, would versions older than the age limit be removed even if that meant being below the "number of versions to keep"? — P72endragon
That is absolutely correct, the retention doesn't have some "main parameter", these options work in conjunction with each other.
When a file has been deleted from the system, I need to keep it in the backup storage for a month. I think this is "delay purge" and "delete files that have been deleted locally" settings, but I've never managed to understand what they mean and how to use them. Can anyone help me with these? — P72endragon
Well, this option does what it is actually written in the description. When you delete a file, the software will check its existence in source and trigger a month-long countdown, there will also be a note that some files will be deleted in X days. After that time the files will be deleted from storage side.
The other thing that confuses me about them is when I'm configuring a hybrid backup with a NAS for local storage and an Amazon Glacier account for Cloud storage, the retention policy page doesn't have a "delete files that have been deleted locally" setting, only the "delay purge" (doing a local storage only, I get both options) — P72endragon
This option is not yet available for hybrid backups, we'll introduce it later, it's already in the works.
So, to achieve your desired results I'd configure retention like on the screenshot below
That should be enough. Let me know if I missed anything.