title: Run SQL Server Agent and Database Engine as Network Service or System
body: <p>It's been a long time since I've had to install SQL Server.  I'm doing it for a source control system called Plastic SCM on my system.</p>
  
  <p>I'm about to finish the wizard asking me a plethora of questions, and I'm at the <code>Service Accounts</code> tab under <code>Server Configuration</code>, it's asking me if I want to use <code>NT AUTHORITY\NETWORK SERVICE</code> or <code>NT AUTHORITY\SYSTEM</code> to run either <code>SQL Server Agent</code> or <code>SQL Server Database Engine</code>.</p>
  
  <p>My question is, what is the different between these accounts?</p>
  
  <p>Thanks</p>