: This indicates that this is the second volume in a sequence. You cannot open this file by itself; you need part 1, part 3, and so on.
The "story" behind these files is usually one of necessity. People split large archives into 5GB chunks for several practical reasons: 5gb].part2.rar
: This typically represents the intended total size or a specific chunk size (5 Gigabytes). : This indicates that this is the second