In order to collect File Server error log files, you must update the web.config file (delivered in the FileServer directory).
The following example shows how to collect level 3 debugs for General and Core file server components.
...
<system.diagnostics>
<switches>
<add name="General" value="3" />
<add name="Performance" value="0" />
<add name="Core" value="3" />
</switches>
<trace autoflush="true" indentsize="1">
<listeners>
<add name="fileOut" type="System.Diagnostics.TextWriterTraceListener" initializeData=".\SPF40FStrace.log" />
<add name="GeneralfileOut" type="System.Diagnostics.TextWriterTraceListener" initializeData=".\SPF40FSGeneralTrace.log" />
<add name="CorefileOut" type="System.Diagnostics.TextWriterTraceListener" initializeData=". \SPF40FSCoretrace.log" />
</listeners>
</trace>
</system.diagnostics>