virtual directory make file copy operation extremely slow on UNC Path (IIS 7.5 bug?)

Posted by user144737 on Server Fault See other posts from Server Fault or by user144737
Published on 2012-11-09T03:49:26Z Indexed on 2012/11/09 5:05 UTC
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Filed under:

windows-server-2008-r2

|

Performance

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iis7.5

When i create a website/virtual directory pointing to UNC path, its make our file copy extremely slow on the UNC path.

6 seconds for file copy (~13 M) on the UNC path without any virtual directory/website pointing to it.

over 1 mins. for file copy (same files ~13M) on the same UNC path with virtual directory/website pointing to it.

All file copy operation run on web server side.

Our setting as below: Web server - Windows Server standard R2 2008 / IIS 7.5 File server - Windows Server standard 2003

I have tested this case on 3 servers (Windows Server standard R2 2008 / IIS 7.5) and got same result. I also tested this case on 2 windows 2003 / IIS 6, it won't slow down the file copy.

Is it IIS 7.5 bug? any patch/hotfix to solve this case? Thank you.

Gordon

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