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Comment Use a portable file system like ZFS (Score 1) 405

we do much the same thing. we have a backup nas that we then rsync to a set of "offsite" drives.

My recommendation would be to investigate ZFS. (picture software raid and LVM rolled into one with filesystem encryption and compression built in.) Easy to compile and install on linux.

We created a pool for the offsite drives, then rsync to that file system. "Export" the file system and take the drives out. (Hot swap in trays, buy extra trays for rotation drives.) When you need to put in the next set just put them in and import it. Order and placement does not matter as long as enough drives are in. You could even have one or two parity drives in case a drive fails.

We have a cron job that rsyncs to the offsite drives, then exports them and emails the admins that it is ready for rotation. We keep 2 sets, one is in all the time and the other rotates offsite. You can swap on whatever schedule you are comfortable with. With compression, depending on data you could easily cut your drive requirements in half. Turn on encryption to keep your porn safe while in transit. All you need is a hot swap JBOD chassis. you could backup directly to the removable filespace, or do what we do, backup to a set local (local to datacenter, not to machine) filespace and rsync it over regularly.

It is something else to learn, etc. But it is a system that works well.

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