I do have a test UU Shard in a virtual machine, not sure if that qualifies me as UU admin
Admittedly, the dataserver of an Alcugs/TPOTS Shard works exactly the same as a UU one. However, as D'Lanor pointed out, I do not use the patching functionality. On the DI server, there is a huge directory containing all the prp, age, sdl, ... files for all available ages in their appropriate folder (to make organizing easier, they are not all in one folder, but rather separated in one Uru folder structure for each age). A python script is reading all those files, and doing some magic (involving Java and native C++ apps... yeah, it's quite messy^^), to create a consistent dataserver out of it (so the files end up on the server twice: uncompressed in the dataserver source folder, and compressed available for download). If the client sees that a file is outdated, it just re-downloads it entirely.
I wrote together most of what I know about dataservers at
http://alcugs.almlys.org/AlcugsDataserver, but I could never find any documentation or tools for the patching functionality.