title: Time needed to split and combine a large file
body: <p>Suppose I have a really large file, for example 10TB, then I would like to archive and split it into several parts for easier transfer using 7-Zip. Suppose I would like to split into n parts, my question is what is the relationship between n and the time needed to split the file?</p>
  
  <p>The larger n is, the more time we need to split it or we need the same amount of time to split whatever number of parts I want?</p>
  
  <p>After the split, I will have to combine these parts to get the original file, now what is the relationship between n and the time needed to combine these n parts?</p>