Possible Duplicate:
Can you help me with my software licensing question?
What is Minimum Windows Server licence to run a SQL server for use in a web farm. Can I run a SQL on a Server2008 Web edition?
Possible Duplicate:
Can you help me with my software licensing question?
What is Minimum Windows Server licence to run a SQL server for use in a web farm. Can I run a SQL on a Server2008 Web edition?
The MSDN website has a detailed description of all the Operating System requirements for the various editions of SQL Server 2008 from the Express right through the Data Center editions. The requirements for the OS change as you move through the versions. Express will run on consumer operating systems, but it appears that most of the versions of Windows Server have a corresponding edition of SQL Server 2008.
It depends on the SQL Server version and license type, from "Standard" to "Enterprise."
The latest version, SQL Server 2008, runs as "Standard" even on Windows XP Service Pack 2. The minimum Windows Server version is Windows Server 2003 (with SP2).
SQL Server 2008 Enterprise requires a Server operating system, Windows Server 2003 or 2008.
Windows Server 2008 Web allows you to install all versions of SQL Server 2008, while you can only install SQL Server Express on the Windows Server 2003 Web Edition (SP2). It has some limitations: