You are welcome.
I don’t recall offhand how to upload files without compression, but it is most definitely possible. I typically just put the file on a webserver that the root server can access and use that as the URL for the prefetch statement. This method has the advantage of the file being cached in the root server’s webcache which will roll over and delete old files automatically instead of being placed in the root server’s upload directory where it will never be deleted automatically and will need manual pruning to keep down in size over time. As long as the root sever’s webcache is large enough, it will not roll over quickly. This is also true if your top level relays have large caches, then even if the root server cache ends up deleting old files, the top level relays could still have a copy to serve up. This is part of why I like the idea of a single top level relay with a very large cache, particularly if you can’t put a lot of storage on the root server. Related: FillDB Buffer Size Issue - #4 by jgstew
Interesting. Definitely not the method I have used in the past.