Cloud storage out of computer storage?

hi,

right at the moment I'm using 3 storage apps in my mbp

it was stupid that I bought the 126 gb version cause the storage is gone

The problem is that the cloud storage (dropbox, Google drive and the third I'm using Mega)

takes from the computer storage itself

im looking for a hard disk that uses as a regular external hard disk and as a cloud

please tell me if such thing exists and if you know/ use one

thank you 🙂