A file is a unit of data in the file system that a user can access and manage.A file must have a unique name in its directory.

A directory is a hierarchical collection of directories and files.

NTFS (New Technology File System)

  • 1993
  • Most common file system for windows end user system.
  • Most windows servers use NTFS as well.

FAT XX (File Allocation Table)

  • 80s
  • Now mainly used for removable storage devices under 32GB capacity.