1. Disk Fragmentation Refers to the condition of a disk in which files are divided into pieces scattered around the disk. Occurs naturally when frequently modifying, creating or deleting files. Results in slow data access speed

3. Problems Increases system boot-up time Increases response time of applications or programs Increases time during installation of software Worsens delay of system response time or user input

4. FAT (File Allocation Table) A table that the operating system uses to locate files on a disk. Due to fragmentation, a file may be divided into many sections that are scattered around the disk. The FAT keeps track of all these pieces. Versions of the FAT format – FAT12 – FAT16 – FAT32

6. NTFS NTFS is the standard file system of Windows NT, including Windows 2000, Windows XP, and all their successors to date. NTFS supersedes the FAT file system as the preferred file system for Microsoft’s Windows operating systems, NTFS has several improvements over FAT.

7. New Technology File System (NTFS) High-reliability Security and Access Control Braking Size Barriers Storage Efficiency Long File Names Networking

8. Advantages of NTFS over FAT The capability to recover from some disk- related errors automatically which FAT32 doesn't have. Improved support for larger hard disks. Better security because you can use permissions and encryption to restrict access to specific files to approved user. Faster access speed. NTFS minimizes the number of disk accesses required to find a file.

9. Conclusion Disk fragmentation would reduce performance and reliability of our computer over time. Disk defragmentation should be performed regularly (weekly). NTFS has more advanced features and is in overall better than the FAT file system.

10. THE END THANK YOU Presented By Sam Ka Wai

11. References: http://www.webopedia.com/TERM/F/fragmentation.html http://files.diskeeper.com/pdf/The_effects_of_fragmentation_on_reliabili ty.pdf http://files.diskeeper.com/pdf/The_effects_of_fragmentation_on_reliabili ty.pdf