Data Organization:I. Organizing Tracks by Sectors (Cont’d)
If there is a lot of free room on a disk, it may be possible to make a file consist entirely of contiguous clusters. ==> the file consists of one extent. ==> the file can be processed with a minimum of seeking time.
If one extent is not enough, then divide the file into more extents.
As the number of extents in a file increases, the file becomes more spread out on the disk, and the amount of seeking necessary increases.