What is the difference between the administrative, root, and standard users on VPS v2?
The main difference between the different classes of users is based on permissions offered to the user. A normal user can only affect the files they own, whereas the administrative user can affect some system files. The administrative user is created at the time you provision your VPS v2. The root user has unlimited file and application access, including files owned by other users. Because of the power of the root user, this user does not have FTP or email access and can only access the account through SSH, either directly using an SSH key generated for the root user or indirectly by connecting through shell as the administrative user and then using the su command to become the root user. For more information on the abilities of different users, see the VPS v2 User’s Guide.