Should I use personal or commercial license?

Hello. I’m running small home server. Movies, photo backup etc. I would like to add backup on it but I’m using this server also to store some projects for clients because I work as a contractor b2b and have my own indie projects(mostly solo developed mobile games backup). So this server has a mixed use. Can I buy personal license or should I go for commercial if I store there anything work related?

Yes, if any file to be backed up is work related then a commercial license is needed.