this post was submitted on 14 Jul 2023
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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My local backups are handled by rdiff-backup to a mirror set of disks. That means my data is versioned but easily accessible for immediate restore, and now on three disks (my SSD, and two rotating rust drives). It also makes restores as simple as copying a file if I want the latest version, or an easy command if I want an older version. And testing backups is as easy as a diff command to compare the backup version with the live version.
Having your files just be files in your backup solution is very handy. At work I don't mind having to use an application like Veeam, because I'm being paid to do that. At home I want to see my backups quickly and easily, because I'd rather be working on my files than wrestling with backup software...
Remote backups are handled by SpiderOak, who have been fine for me for almost a decade. I also use them to synchronise my desktop and laptop computer. On my desktop SpiderOak also backs up some files in an archive area on the rotating rust mirror set - stuff that's large and I don't access often, so don't need to put on my laptop but do want backed up.
I also have a USB thumbdrive that's encrypted and used when I'm travelling to back up changes on my laptop via a simple rsync copy - just in case I have limited internet access and SpiderOak can't do its thing...
I did also have a NAS in the mix once, but I realised that it was a waste of energy - both mine and electricity. In normal circumstances my data is on 5 locations (desktop SSD, laptop SSD, desktop mirror set, SpiderOak's storage) and in the very worst case it's in two locations (laptop SSD, USB thumbdrive). Rdiff-backup to the NAS was simply overkill once I'd added the local mirror set into my desktop, so I retired it.
I'd added the local mirror set because I was working with large files - data sets and VM images - and backups over the network to the NAS were taking an age. A local set of cheap disks in my desktop tower was faster and yet still fairly cheap.
Here's my advice for your consideration:
Good luck with your backup strategy!
⬆️ for rdiff-backup since it keeps the last backup easily readable.
I had before (and I think I'll implement it again) snapshot capable filesystem where to I rsynced my stuff. Then once a day did a snapshot of the backups. It has the advantage of all the backups being easily readable as long as your backup filesystem is intact and your kernel can mount it.