In the Admin Console for FileMaker Server 10, I can find a setting labeled: Maximum Number of Files to Host [ 50 ] and this is a setting that I can increase to a larger number if I need to.
I don't have a copy of Server 9, but if I did, I'd launch the admin console for that version and see if I had the same option.
Given the way FileMaker files can now have multiple tables in one file, 50 files represents a very large number of files. We exceeded this limit with FileMaker 5.5, but have since merged files down to where each system on a given server is implemented with 5 or fewer files.
You're awesome Phil! I found it - thanks!
What is the maximum number you can save for the "Maximum number of files to host" setting?
Under our FM Server 11 it appears to be 125.