I used to save files under the default name and rename on my PC, but got too lazy. I'm up to NewFile9.csv, having suffered from the scope refusing to recognize USB flash drives until I rebooted and lost my saved trace (DSRemote wouldn't connect to my scope over USB or Ethernet, I resorted to using the dreadful Windows UltraScope software to export a CSV) (somehow UltraScope manages to be as slow on a Ryzen 5600X as the DS1054Z software on the decade-old microcontroller), later stopped recognizing my drive mid-save (the progress bar hung indefinitely, the flash drive idle LED turned off) until I replugged the drive and tried saving again, and minutes-long CSV save times and randomly unchecking all but one save channel (I couldn't find good tools to parse .trc and .wfm files into PulseView-readable files).