For automation, scripting, or handling advanced structures, the CLI ( 7z.exe ) is best.
-v1g : Splits the output into 1GB chunks ( BTB.7z.001 , BTB.7z.002 , etc.). Summary of Advanced Switches : Recursively include subfolders. BTB.7z
LZMA2 (optimal for multi-core processors) or LZMA. or handling advanced structures