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Friday, March 23, 2012

Difference of several file systems

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1. FAT 16 (File Allocation Table 16)


Actually before FAT16, notified before any file systems on MS-DOS that is FAT12, but because many lack the emerging FAT16. FAT16 itself was introduced by MS-DOS in 1981. Initially, the system is designed to manage file floppy disk, and has been amended several times, so it is used to set harddrive file. FAT16 is compatible advantage in almost every operating system, either Windows 95/98/Me, OS / 2, Linux and even Unix. But behind it all the biggest problem of FAT16 is having the capacity of a fixed number of clusters in the partition. So the bigger hard drive, the greater the cluster size. In addition, the lack of one FAT16 does not support compression, encryption and access control in a partition

2. FAT 32 (File Allocation Table 32)

FAT32 system began in the know on the Windows 95 SP2 and the development of more than FAT16. FAT32 offers the ability to accommodate a larger number of clusters in the partition. It also developed the ability to drive is better than FAT16.However FAT32 has a weakness that is not owned FAT16 is limited Operating System that can recognize FAT32. Unlike FAT16 can be known by virtually all operating systems. But it does not matter if you are running FAT32 on Windows XP because Windows XP does not matter what file system in use on that partition.

3. NTFS (New Technology File System)


NTFS on first introduced in Windows NT and the file system that is completely different compared to FAT technology. NTFS offers better security, file compression, clusters, and even support data encryption. NTFS is the default file system for Windows XP and Windows if you do a regular upgrade you will be asked whether you want to upgrade to NTFS or keep using FAT. But if you are upgrading to Windows XP and NTFS do not make changes did not matter because you can convert it to NTFS at any time. But remember that if you are using NTFS will arise a problem if you want to downgrade to FAT without losing data.

On NTFS generally not compatible with other Operating System installed on the same computer (Double OS) is not detected even when you do a StartUp Boot using the floppy. For it is recommended to you to provide a small partition that uses the FAT file system at the beginning of the partition. This partition allows you to save the Recovery Tool if get into trouble.

 

4. Ext2 - Second Extended File System 2


Ext2 was first developed and integrated in the Linux kernel, and is now also being developed for use on other operating systems. The goal is to create a powerful file system, which can implement those files from UNIX semantics, and has an advanced service features.


Abilities :

  • Ext2 File system capable of supporting multiple file types from UNIX standard, such as regular files, directories, device special files and symbolic links.
  • Able to set the Ext2 file-system file that is created in a large partition.
  • Ext2 File system capable of generating file names are long. Maximum of 255 characters.
  • Ext2 require several blocks to super user (root).


5. Ext3 - Third Extended File System


Ext3 is a journalled file system, journalled file system designed to help protect data in it. With a journalled filesystem, then we no longer need to check the consistency of data, which will take very long for my disk.

Ext3 is a filesystem that was developed for use on the Linux operating system.Ext3 is the result of improvement of Ext2 Ext2 into better shape by adding a variety of advantages.


Excess :

  • Ext3 does not support the process of checking the file system, even when the system is not cleaned experiencing "shutdown", except in some very rare hardware errors.
  • Things like this happen because the data is written or stored into a disk in a way that its file system is always consistent.
  • The time required to recover EXT3 file system after the system is not cleaned off
  • Regardless of the size of the file system or file number, but depends on the size of the "journal" used to maintain consistency. Journal of the size of the initial (default)
  • It takes about 1 second to recover (depending on the speed of hardware).

Ext2 and Ext3 comparison :

  • In general, the principles of the Ext2 with Ext3.
  • Method of file access, data security, and the use of disk space between the file system is almost the same.
  • The fundamental difference between the two file systems is the concept of journaling file system that is used in Ext3.
  • The concept of this journaling Ext2 and Ext3 has led to a difference in terms of durability and data recovery from damage.
  • The concept of Ext3 journaling is causing a lot faster than Ext2 in performing data recovery from damage.
  • Ext3 does not support the process of checking the file system, even when the system is not cleaned experiencing "shutdown", except in some very rare hardware errors.
  • Things like this happen because the data is written or stored into a disk in a way that its file system is always consistent.
  • The time required to recover EXT3 file system after the system is not cleaned off
  • Regardless of the size of the file system or file number, but depends on the size of the "journal" used to maintain consistency. Journal of the size of the initial (default)
  • It takes about 1 second to recover (depending on the speed of hardware).


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