When IIS 6.0 is running in worker process isolation mode, you can combine WEB applications into application pools. Application pools allow specific configuration settings to be applied to multiple application groups and allow worker processes to service these applications. You can specify any Web directory or virtual directory to the application pool.
By creating new application pools and assigning Web sites and Web applications to them, you can increase the efficiency and reliability of your servers and make other applications always available even when the new application pool terminates.
Important You must be a member of the Administrators group on the local computer or you must be delegated the appropriate permissions to perform the following steps. As a best practice for security, log on to the computer using an account that is not part of the Administrators group, and then run IIS Manager as an administrator using the Run as command. At the command prompt, type runas/user:administrative_accountname mmc%systemroot%\system32\inetsrv\iis.msc.
Create a new application pool
In IIS Manager, expand the local computer, right-click Application Pools, point to New, and then click Application Pools.
In the Application pool ID box, type a name for the new application pool.
Under Application pool settings, click Default settings for new application pools or use an existing application pool as a template.
If you selected use an existing application pool as a template, from the Application Pool Name list box, click the application pool that you want to use as a template.
Click OK.
How to create and isolate applications
To create an application, you specify the directory as the starting location for the application (the application root directory). You can then set the properties of the application. Each application can have a friendly name, which appears in IIS Manager and gives a way to differentiate applications. The application name is not used elsewhere.
The Web site defaults to the root-level application. When you create a Web site, a default application is created at the same time. You can use this root-level application or delete it, and you can replace it by deleting it and creating a new application.
Important You must be a member of the Administrators group on the local computer or you must be delegated the appropriate permissions to perform the following steps. As a best practice for security, log on to the computer using an account that is not part of the Administrators group, and then run IIS Manager as an administrator using the Run as command. At the command prompt, type runas/user:administrative_accountname mmc%systemroot%\system32\inetsrv\iis.msc.
in IIS Manager, expand the local computer, right-click the directory where the application starts, and then click Properties.
Click the home directory, virtual directory, or Directory tab.
in the Application Settings section, click Create. If you see the delete button (not the Create button), the application has been created.
in the Application Name box, type the name of the application.
Click OK. The
Quarantine application means that they are configured to run in a different process (memory space) than the WEB server and other applications. You can run IIS 6.0: Worker process isolation mode or IIS 5.0 isolation mode in one of the following isolation modes. IIS cannot run in both of these modes.
In a new installation, worker process isolation mode is the default mode for running the server. In this mode, you can isolate an application by adding it to an application pool that includes isolation settings. For more information about creating and configuring application pools, see Configuring Application pools.
Isolate the application in worker process isolation mode
in IIS Manager, expand the local computer, expand the Web Sites folder, right-click the application that you want to isolate, and then click Properties.
Click the home directory, virtual directory, or Directory tab (depending on your application).
in the Application Settings section, in the Application Pool list box, click Application Pools.
Click Apply, and then click OK.
IIS 5.0 isolation mode allows you to run an application that was developed for earlier versions of IIS in IIS 6.0.
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