TLDR: I want to avoid data corruption on my small server by occasionally writing archived data from one disk across to another. From lurking on this forum this seems to be a simple way to avoid the quiet corruption of data that can happen if you simply leave it there and don't access it for years.
I'm running Ubuntu Server and just writing a cron script to activate rsync and copy data across every three months seems like an adequate way to do this. I'm thinking of keeping three copies of everything, and overwriting the oldest copy when I run out of space.
Does this sound reasonable? I'm not terribly technical and just don't get round to making multiple backups every month.
Detail: I have an old Microserver with a range of hard drives (512GB to 1TB) that ended up being surplus over time. About 12GB of drive space altogether, with 8GB being two 4GB external USB drives. This is about twice as much capacity as I need at the moment.
In addition I have about 4GB of "loose" external HDDs for cold storage.