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this post was submitted on 29 Nov 2023
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Linux
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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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"Proper backups" imply that you have multiple backups and a backup strategy. That could mean, for instance, that you would do a full backup, then an incremental/differential backup each week and keep one backup for each month. A bad cable would cause you trouble, no doubt, but the impact would be lessened by having multiple backups points spread over months.
Redundancy is not backup. Read that again.
Redundancy is important for system resilience, but backup is crucial for continuity. Every filesystem is subject to bugs and ZFS is not special. Here's an article from a couple of days ago. If you're comfortable with no backups just because you have redundancy, more power to you. I wouldn't be.
I wasn't saying backups are useless or something.
I was saying there are situations that backups can't solve.
Sure, all the work you do between the moment of the filesystem failure and the last backup is gone. There's nothing that can be done to mitigate that fact, other that more frequent backups and/or a synchronized (mirror) system.
Backups are just a simple way to keep you from having to explain to your partner that you lost all the pictures and videos you took along the years.