A profile is created in the PSConsole and includes SRA proxy server configuration information. An instance is a combination of a hostname and a profile.
For example, create a profile nameddefault. You can create a gateway instance on host A and a netlet proxy instance on host B with the same name, default. Both instances use the configuration information in the profile default, since the name of the instance and the profile are same.
In the above scenario, it is possible to use the same profile for multiple instances of SRA proxy servers on multiple hosts.