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I am using a server 2003 as a file server what support 30-40 user simultaneously.

Users always report the response time of open folder is very slow and something will cause the explorer. I check the disk queue length using performance monitor, it always keep at full(100) level.

Is there are any way to check what caused the issue and how to fix it?

Thanks a lot!

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Try using Process Explorer ( to see what process thats eating up your I/O.

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I just check the I/O by processxp, here is the information Order by the most consuming I/O Reads 1. System 2&3 explorer.exe I/O Read Bytes 1. lsass.exe 2. spoolsv.exe I/O Write 1. System 2. lsass.exe I/O Write Bytes 1. System 2. spoolsv.exe – user9272 Jun 12 '09 at 9:08
Hmm.. so no applications eating up I/O then. How much RAM does the server have? Please enter ctrl+i in the process explorer and report back Total physical memory, Aviable and System Cache. – pauska Jun 12 '09 at 9:24

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