To activate S-Drive, you need to have your Amazon Access Key and Amazon Secret Key information.
To generate your keys, you need to have an Amazon Web Services (AWS) account with an Amazon Simple Storage (S3) subscription.
If you did not create AWS and S3 accounts and access/secret keys yet, follow the instructions in Sign Up for Amazon Services: AWS and S3, first. Then, follow instructions in Generating Amazon Access and Secret Keys tutorial.
Make sure you have your Amazon Acces Key and Amazon Secret Key information is ready.

You can follow below instructions to activate S-Drive.