Run SQL Server Agent and Database Engine as Network Service or System

It's 开发者_如何学JAVAbeen 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.

I'm about to finish the wizard asking me a plethora of questions, and I'm at the Service Accounts tab under Server Configuration, it's asking me if I want to use NT AUTHORITY\NETWORK SERVICE or NT AUTHORITY\SYSTEM to run either SQL Server Agent or SQL Server Database Engine.

My question is, what is the different between these accounts?

Thanks

Follow the screenshots here: http://sqlblog.com/blogs/andy_leonard/archive/2008/07/15/installing-sql-server-2008-rc0.aspx

The best solution is to use a separate Active Directory account.