Step 1: Review WSUS Installation Requirements for Migrating from Software Update Services
Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2, Windows Server Update Services
The following are the baseline installation requirements for WSUS installations that use the default options. You can find hardware and software requirements for other installations in the “Deploying Microsoft Windows Server Update Services” white paper.
Hardware recommendations for a server with up to 500 client computers are as follows:
1 gigahertz (GHz) processor
1 gigabyte (GB) RAM
Software Requirements
The following is a list of required software for each operating system that supports WSUS. Ensure that the computer you will use for the WSUS server meets this list of requirements prior to your running WSUS Setup. If any of these updates require restarting the computer when installation is completed, you should restart your server prior to installing WSUS.
Windows Server 2003
The following software is required for running WSUS on Windows Server 2003:
Microsoft Internet Information Services (IIS) 6.0.
Background Intelligent Transfer Service (BITS) 2.0; go to the Download Center at https://go.microsoft.com/fwlink/?LinkId=47251.
Microsoft .NET Framework 1.1 Service Pack 1 for Windows Server 2003; go to the Download Center at https://go.microsoft.com/fwlink/?LinkId=47358.
An alternative is to go to Windows Update at https://go.microsoft.com/fwlink/?linkid=47370 and scan for Critical Updates and Service Packs. Install Microsoft .NET Framework 1.1 Service Pack 1 for Windows Server 2003.
Windows 2000 Server
The following software is required for running WSUS on Windows 2000 Server:
Windows 2000 Server Service Pack 4; go to the Download Center at https://go.microsoft.com/fwlink/?linkid=49072.
Microsoft Internet Information Services (IIS) 5.0. For instruction about how to install IIS, see the “Deploying Microsoft Windows Server Update Services” white paper or Help and Support Center in Windows 2000 Server.
Background Intelligent Transfer Service (BITS) 2.0; go to the Download Center at https://go.microsoft.com/fwlink/?LinkId=46794.
Database software that is 100-percent compatible with Microsoft SQL. To obtain Microsoft SQL Server 2000 Desktop Engine (MSDE 2000) Release A, go to the Download Center at https://go.microsoft.com/fwlink/?LinkId=47366.
Microsoft Internet Explorer 6.0 Service Pack 1; go to the Download Center at https://go.microsoft.com/fwlink/?LinkId=47359.
Microsoft .NET Framework Version 1.1 Redistributable Package; go to theDownload Center at https://go.microsoft.com/fwlink/?LinkId=47369.
Microsoft .NET Framework 1.1 Service Pack 1; go to the Download Center at https://go.microsoft.com/fwlink/?LinkId=47379.
An alternative is to go to Windows Update at https://go.microsoft.com/fwlink/?linkid=47370 and scan for Critical Updates and Service Packs. Install Microsoft .NET Framework 1.1 Service Pack 1 for Windows 2000 Server.
Disk Requirements and Recommendations
To install WSUS, the file system of the server must meet the following requirements:
Both the system partition and the partition on which you install WSUS must be formatted with the NTFS file system.
A minimum of 1 GB free space is required for the system partition.
A minimum of 6 GB free space is required for the volume where WSUS stores content; 30 GB is recommended.
A minimum of 2 GB free space is required on the volume where WSUS Setup installs Windows SQL Server 2000 Desktop Engine (WMSDE).