Understanding Why Disk Defragementation is important
Disk defragmentation is the process that put fragmented files together continuously. Think of it this way, let say if all the materials that you need to do a project is in different place you would first have to gather all that materials and place it in a single location this would take some time to do. This is what happen when you open a file and the file is fragmented. The hard drive head would have to retrieved all the data associated with the file which is located in different area of the hard drive and put it together so that is can execute your command to open the documents. Although this process seems fast with the naked eyes, but it is consider slow at which the computer process your open command. You might not see the different depend on your computer but it is best that the hard drive be defrag so that each part of a file is located in a continuous area on the disc.
Master File Table (MFT) contained frequently used system files and indexes. By default NTFS reserves zone, 12.5% of volume size for MFT and does not allow writing there any user's data. MFT can become fragmented and can grow beyond the 12.5% reserve zone. The cause is when file are deleted. When files are deleted, NTFS does not always use its space in MFT to store new one. NTFS just mark the MFT entry as deleted and allocated new entry for the new file.
REMEMBER: The more MFT fragmentation, the more the HDD heads movements to access the data, the less overall performance of file system.
Related Link: MyDefrag
Master File Table (MFT) contained frequently used system files and indexes. By default NTFS reserves zone, 12.5% of volume size for MFT and does not allow writing there any user's data. MFT can become fragmented and can grow beyond the 12.5% reserve zone. The cause is when file are deleted. When files are deleted, NTFS does not always use its space in MFT to store new one. NTFS just mark the MFT entry as deleted and allocated new entry for the new file.
REMEMBER: The more MFT fragmentation, the more the HDD heads movements to access the data, the less overall performance of file system.
Related Link: MyDefrag