I finally decided to use a single dedicated server instead of several distinct web hosting services for the different blogs I run.
I picked a Dedibox server and added a backup option to have access to an extra storage space on another computer. There are two things I want to backup :
- my website files
- my databases
For the database backups, I downloaded and tweaked (not much) the script shared by William Durand.
Everything is called daily by cron and, depending on the day of week, a full or incremental archive is created. After having one of my blog hacked, I really had to get busy working on a backup solution for my data.