How to limit storage for each sub-site

Hello,
I want to limit Storage for each sub-site. I know Pro Sites can do that by limiting storage size for each site level. Is there any other way to do that? For example, any membership plugin? or a plugin that limit storage on sub-sites basis, which means I can set any storage size for different subsites (100 subsites may have 100 different storage size)

Thanks very much!
Regards
YZ