For my laptop: I use backblaze for everything. I have timemachine setup on a small server (running zfs and snapshotting). I also use arq to backup more important stuff an extra time to S3.
For servers with data, which currently is just postgres - Heroku pg backups. We download, verify and archive them on S3 and to local server.
> I have timemachine setup on a small server (running zfs and snapshotting).
Are you talking about the Apple Time Machine app here? I'd be curious to hear about your setup if so. Right now I'm using time machine to a USB attached HDD, because my last foray into network attached volumes + time machine (using linux/samba as the volume host) was pretty painful.
I also like the idea of ZFS and periodic array scrubbing to detect invisible failures, which most RAIDesque configurations ignore.
For servers with data, which currently is just postgres - Heroku pg backups. We download, verify and archive them on S3 and to local server.