The process of creating a split archive, also known as "spanning," is typically done for several practical reasons: Zipping and Splitting Large Files - Zanda Knowledge Base
: The primary filename chosen by the user who created the archive. 037.7z.001
: Identifies this as Volume 1 in a sequence. For the data to be usable, it must be accompanied by subsequent parts like 037.7z.002 , 037.7z.003 , and so on. Why Files are Split The process of creating a split archive, also
: Indicates that the original content was compressed using the 7z format , which often utilizes the high-ratio LZMA compression algorithm . also known as "spanning