★ Interleave is the process through which gaps are placed between two sectors on the platter of a disk.

★ This was done in earlier days when the computers were not quick enough to read continuous streams of data.

★ Without interleaving there would be no gaps between the sectors and data would arrive immediately before the reading unit is ready. Due to this to read the same data a complete rotation of the disk would be required again.

★ The interleaving ratio was not fixed and can be set by the end user depending on their system specs. Nowadays the ratio of interleaving is 1:1 i.e. no interleaving is used.