Turning on software compression will optimize space usage. 

For a comprehensive description please review our documentation. 

Did you also have a particular dataset you're asking or is this just a general question?

@Emils No its more when do you use compressie on Client and when on MA. 

@Egor Skepko It all depends on resourcing, typically you want to offload the compression of the client to reduce the amount of CPU cycles used during backups, but that depends on the size of the MA and the amount of clients / streams running backups in parallel.

@Emils Ok thanks for the answer.