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Advantages Of Storing Files

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State two advantages of storing files using the techniques of linked list allocation using index.

Advantages Of Storing Files

  • The main idea behind allocation is effective utilization of file space and fast access of the files. There are three types of allocation:
      • contiguous allocation
      • linked allocation
      • indexed allocation
  • Method of Storing File
      •  Contiguous allocation: this scheme used in early systems, allocation using first fit and a need for compaction. 
         Advantage: Simple – only starting location (block #) and length (number of blocks) are required. Advantage is its ease of direct access because every part of the file is stored in the same compact area.
        Disadvantage: Difficulty in finding space for a new file, Wasteful of space, Suffer from the problem of external fragmentation


        Contiguous allocation

      •  Link- List Noncontigous Allocation:

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