redirect http to https

Hi  , yes you can achieve it using single virtual server. For this, you can use port list option where you can add multiple services in a single port list group. In your case, it would be 80 and 443. And This port list group will be mapped on the vServer. With this, single virtual server will listen on multiple ports. Once it is done, with the help of irule, you can manage redirections when request is coming on port 80.

Hope it helps!