Web garden 和Web farm

An application pool that uses more than one worker process is called a Web garden.

An application is hosted by multiple servers then it is said to be web farm environment.

To configure a Web garden by using IIS Manager 1. In IIS Manager, expand the local computer, expand Application Pools, right-click the application pool, and then click Properties. 2. Click the Performance tab, and under Web garden, in the Maximum number of worker processes box, type the number of worker processes that you want to assign to the application pool. (You must type a number greater than 1 for the application pool to become a Web garden. 3. Click OK.

Configuring Web Gardens with IIS 6.0 (IIS 6.0) http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/659f2e2c-a58b-4770-833b-df96cabe569e.mspx?mfr=true