IndX file system - Transactional File System, This feature will be very interesting to application developers. In Vista has been possible to include file operations in a transaction with the standard functionality 2 - x phase commit (2 phase commit transaction). For example, if you need to simultaneously create or modify some files, and the situation when a file is modified, and the other was unable to be modified is not permitted. These operations can be combined into one transaction, and in case of error in all of the files involved in the transaction will remain in its original state. Another example - if you want to create a file, and add information about it in a database, you can do so within a distributed transaction.

Secure File System (Encrypting File System - EFS)
Windows Vista provides new opportunities for the protection of data on computer disks. EFS provides the ability to protect files, directories or entire drives using data encryption. The keys for encryption algorithms can be stored on smart cards, making the system even more resistant to hacking.

If your computer is equipped with hardware support for Trusted Platform Module (TPM), the users can use technology protection discs BitLocker Drive Encryption. PM T is a special chip, which allows you to store encryption keys, passwords and digital certificates. Technology BitLocker protects against copying data when transferring to another computer disk, or a different operating system boot from a floppy disk or CD.

Automatic generation of shadow copies - Volume Shadow Copy
Have you ever accidentally delete or modify an important document? I have faced similar situations. In Windows Vista can now be quickly revert to a previous copy of the shadow copy. Shadow copy of the document is created automatically when you modify a file, so that if a document accidentally deleted or modified, it could be quickly restored. Previously, the technology was available only in Windows Server. Now, Vista users can also use all these advantages.