ARCH is the processor architecture the package was compiled to run on. RELEASE is the release number of the package based on that version, and is set by the packager, who might not be the original software developer (4.el8).
VERSION is the version number of the original software (8.30).
Compute a cyclic redundancy check (CRC) checksum for the downloaded files and compare the checksum numbers against the numbers posted on the OTN website (where you downloaded the file.
