title: What is the difference between running under system account and user account?
body: <p>I am new to TeamCity and currently installing it.</p>
  
  <p>It was asking whether I want to be running the server under a "user account" or "the SYSTEM account" / running the agent under a "user account" or "the SYSTEM account".</p>
  
  <p>I assumed that since my version control (clearcase) is configured to my employee id, I should select user account.</p>
  
  <p>Is my assumption correct? When should either the SYSTEM account or a user account be used? What is the difference between them?</p>