K42.7z (Fully Tested)

Tell gzip/bzip2/7z/etc not to compress already-compressed files?

The 7z command is a powerful archiving tool that supports multi-threaded compression (LZMA2) and split archiving. Here is a write-up summarizing key technical considerations when using 7z: K42.7z

7z allows for non-solid mode, which is beneficial when specific files within a large archive need to be accessed quickly, as it reduces the need to decompress the entire archive. 7z provides multi-core compression

You can skip compression while still including files by setting the compression level to 0 (store). K42.7z

For large file sets, 7z provides multi-core compression, making it faster than many single-threaded alternatives. More details on using 7z with block devices ?