I'm currently using Amazon's Cloud Drive for backups with Arq, see: http://arqbackup.com/ - It's a pretty sweet deal, if it lasts, however no unlimited service is truly unlimited. For example Microsoft's OneDrive was also unlimited at first.
However, if you end up doing this, it's a pretty bad idea to use your account for anything else but backups. Especially Amazon's Cloud Drive. And I also can't speak for how durable the stored data is and it's a good idea if important data is backed up in two places.
However, if you end up doing this, it's a pretty bad idea to use your account for anything else but backups. Especially Amazon's Cloud Drive. And I also can't speak for how durable the stored data is and it's a good idea if important data is backed up in two places.