Divya's Blog

Internet Information Service’s isolation levels

Posted on: May 15, 2011


IIS has three level of isolation:-

  1. LOW (IIS process)
  2. Medium pooled scenario
  3. High isolation scenario

LOW (IIS process):

  • In this main IIS process and ASP.NET application run in same process.
  •  So if any one crashes the other is also affected.

Example : It is possible to  host yahoo, hotmail .amazon and google on a single PC. So all application and the IIS process runs on the same process. In case any website crashes it affects every one.


Medium (Pooled):

  • In Medium pooled scenario the IIS and web application run in different process.
  • So in this case there are two processes process1 and process2.
  • In process1 the IIS process is running and in process2 we have all Web application running.

High (Isolated):

  • In high isolated scenario every process is running is there own process.
  • In given figure of high isolated scenario,there are five processes and every one   individual application.this requires heavy memory capacity with high fidelity.

                                       High isolation scenario


Medium pooled scenario

LOW IIS process scenario

                                                                  

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