Terminal Server is running slow because I/O - Resolution with screenshots

Situation: The client is running TS 2003. Recently, the TS is running every slow with log showing some I/O error.

Troubleshooting: 1. After running Microsoft Performance Monitor, we found Avg Length is stuck at 100 as shown below.

2. We use Process Explorer (http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx) to see which applications have the highest I/O reads and writes".

We also use another program called FileMon (http://technet.microsoft.com/en-us/sysinternals/bb896642.aspx)

It seems to us utility “Unlocker” software may cause the problem. After  we uninstalled "Unlocker” and defragged both discs, the disk queue length dropped down to more normal levels.

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