Bvckup (not a typo)

Made by a little Swiss company, extremely light but very competent. Stays completely out of your way unless it absolutely must get your attention (which is usually never).

I think it’s paid only but it’s very reasonable. Works great in intermittent situations, I. E. It won’t blow up if it tries to run a scheduled backup and the source or target is disconnected etc… Works very well for me for a decade.

While true that the x nm nomenclature doesn’t match physical feature size anymore, it’s definitely not just marketing bs. The process nodes are very significant and very (very) challenging technological steps, that yield power efficiency gains in the dozens of % usually.

This would be really cool!