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.NET framework - side-by-side installation - IIS - 1.1 and 2.0 on Windows Server 2000

We have successfully setup .NET versions 1.1 and 2.0 to run on Windows Server 2003 running IIS 6.0.  It was pretty simple.  Download the frameworks, *create a second application pool*, tell 1.1 to run out of the default memory pool, tell 2.0 to run out of new pool, default port 80 to the default web site, direct second web site to use a different port such as 1080.  

Question: How do we accomplish the same feat on Windows 2000 Server running IIS 5.0 since there are no such pools?

We cannot risk crashing our production server which is runn 2000.  When we did not setup our 2003 box properly it would crash saying we cannot run two different processes in the same pool.

Is this even a concern for IIS 5.0 running under 2000?

Many thanks,

Keith
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rowek
Asked:
rowek
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1 Solution
 
sleep_furiouslyCommented:
In IIS 5.0, a workaround to get ASP.NET 1.1 and 2.0 to run in different pools is to give them different isolation levels; for example, run ASP.NET 1.1 applications as Medium (Pooled) and ASP.NET 2.0 applications as High (Isolated).
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rowekAuthor Commented:
Sounds like a good solution.  Quick followup - is this even necessary for Windows 2000 Server?  

I know 2003 throws an error message, but what about 2000?  Do you recommend we run the new 2.0 app in "High" isolation mode?

I will award points quickly.
Thanks, Keith
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sleep_furiouslyCommented:
It would be a problem on Windows 2000 as well -- there would be conflicts between the two frameworks.

It sounds like running the ASP.NET 2.0- app in High isolation mode would make sense for you because chances are you have more ASP.NET 1.1 apps, so you get more benefit from pooling those.  Also, your 1.1 apps are probably running in Medium currently since that is the IIS 5 default, and running the ASP.NET 2.0 in High isolation will help keep any problems with the new 2.0 apps from taking the whole IIS down.
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rowekAuthor Commented:
Perfect answer.  Thank you so much.
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rowekAuthor Commented:
Be sure to read KB296851 before attempting to set the isolation level to high.
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