engine: What's the solution for making the data on the SSD safe? Backup, for sure, but...
I use SD and hard disks in a quite practical way. My backup software of choice is EaseUS Backup Free (an specific version for personal choice). It can backup everything the day and hours I set it to, even wake the laptop in the middle of the night and perform a full, partial or incremental backup without my intervention, or do so when I choose to.
My laptop has an SD card slot. For some time I used it to backup my HD, it's practical, convenient and fast. You can get quite large SD cards for cheap but depending your work, space might end up becoming an issue for stuff 128G/256G+
I built a HDD caddy (you can also buy them for cheap), this way I could perform FAST backups SSD to HDD with just a click without plugging USB devices. This-is-fast. Depending on your hardware you might find USB3+ faster, but as said depends on your hardware. I could also swap the caddy and insert my DVD drive, restart is recommended.
Also have a router with USB, it's quite easy to perform backups within my network to any USB external media. It's not my favorite because of the lower speed compared to HDD in caddy or USB, and I don't fancy the concept of data permanently connected to the network. But yes, it is a practical option, if WIFI is too slow I just plug the Ethernet cable.
My personal choice and ritual at present time is using two external hard disks, simple USB interface, fast, incremental.
engine: I use DVDs, some going back many, many years.
tangor: In fact, on the shelf above my computer sits 12 50-dvd capacity plastic
I used to do that,
I don't anymore. Optical drives can fail even if you don't touch or use them at all, the brand might be a factor yes, but overall optical drives are subject to fungus damage, careful with the topic, it's an easy read and also easy to underestimate, in fact that's the usual "
oh no that's not a problem here, I store my discs in...". Truth is you don't need to SEE evident damage, spots or stains on the optical drives to suffer data loss. Experienced this myself and on diff workplaces. The data loss experienced covered 5+ years old discs, on some cases less (due to the environment).
Backups can often be "static", meaning people perform the backup and assume it's safe, but won't test periodically the target data. Any backup is safe as long as you can actually recover all the data.