Does it make sense to use OJS as an institutional repository?

Hello, my institution is going to offer an institutional repository for scientific publications. We have searching a tool for that purpose, and we decided that DSpace is the best option at the moment. Anyway, my boss is convinced that OJS could be a better option… but I haven´t find any case…
Please, could you tell me if OJS could be used as an institutional repository, and which problems could we have if we try to use it for that purpose?
Thank you for your help.
Best regards