Is there a way to create a directory structure and files inside a file on a 'base' filesystem'?

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http://unix.stackexchange.com – Current scripts create and delete multiple files over NFS. I have been told that this is the problem, so was thinking if the run directory the script ran in looked like a single file to NFS then I might alleviate the problem. I should add that we have hundreds of these scripts working in their own run directories but all over NFS at any one time, and we have a bottleneck due to the creation and deletion of many tens of files for each run directory. (HowTos)