5. NTFS Transactions, Compression, and Encryption

• NTFS maintains a transaction log and change journal

  • in the event of a failure NTFS automatically restores the consistency of the file system.

• NTFS can natively compress and encrypt files without the use of a separate application.

• The file is

  • encrypted/compressed during the file write, and

  • decrypted/uncompressed during the file read operation

• Compression/Encryption is transparent to user.