For remote backup I use Arq, but I have found that to be very buggy. I'm considering switching to rclone: https://rclone.org/
With both of those backup solutions in place I should be ready for pretty much everything.
And more recently I made a backup to glacier, and it is trapped in "in progress", even though it appears that it may (or may not) be complete.
I haven't used it much, maybe 6 times, and 2 of the times it's had these catastrophic problems I'm talking about. I'm going to switch to another solution. I was considering rclone (like I mentioned) or Crashplan, ironically.
My main issue is that I went with free plan + my own server because transfers to their servers were really bad. But to supply your own storage, you have to install Crashplan on the server, which uses significant amount of RAM. So this rules out backuping to my NAS (not enough memory there, even though it's x86 and technically people ran Java on it).
The other issue is that file format is (AFAIK) closed, and also you an account and connection to Crashplan service, so I'm not completely sure that you really own the data. I didn't do much research here, though.