When some applications update very large files (1 terabyte or 2 terabytes) in Windows Server 2008 or in Windows Vista, you may receive an error status message from the ntfs.sys driver. The error status message may resemble one of the following error status messages:

0xc0000427 STATUS_FILE_SYSTEM_LIMITATION
0×299 ERROR_FILE_SYSTEM_LIMITATION

For example, when you perform the dbcc checkdb action on a large database file, you may receive the following error message:

The operating system returned error 665 (The requested operation could not be completed due to a file system limitation) to SQL Server during a write at offset [address] in file [file name].

Consider the following scenario:

• On a file server, you create a shared folder that contains NT file systems (NTFS) alternate data streams.
• On a Windows-based client computer that has a network connection to the file server, you enable the Offline Files feature on the shared folder. Therefore, the contents of the folder are cached locally on the client computer.
• On the client computer, you disconnect the network connection from the file server, and then you modify or rename the shared folder.
• You re-connect the client computer to the file server, and then you synchronize the shared folder to the file server.

In this scenario, the alternate data streams are lost.

This problem usually occurs when the client computer is running one of the following:

• Windows XP
• Windows Server 2003
• Windows Vista
• Windows Server 2008

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Keep reading →

In Windows Vista, the NTFS file system Discretionary Access Control Lists (DACLs) have been changed to enable data sharing and collaboration in data directories that are outside protected directories. Keep reading →

NTFS is the standard file system of Windows NT, including its later versions Windows 2000, Windows XP, Windows Server 2003, Windows Server 2008, and Windows Vista.

NTFS supersedes the FAT file system as the preferred file system for Microsoft’s “Windows”-branded operating systems. NTFS has several improvements over FAT and HPFS (High Performance File System) such as improved support for metadata and the use of advanced data structures to improve performance, reliability, and disk space utilization, plus additional extensions such as security access control lists (ACL) and file system journaling. The exact file system specification is a trade secret, although (since NTFS v3.00) it can be licensed commercially from Microsoft through their Intellectual Property Licensing program.

Consider the following scenario:

• You are running a Windows Vista-based computer.
• In Windows Explorer, you try to copy a file that contains extended attributes from an NTFS volume to a FAT volume.

In this scenario, you receive the following error message:

Copy File
Invalid MS-DOS function.
File Name
Type: File Type
Size: File Size
Data modified: Data
Try Again|Cancel

When you click Try Again, you receive the following error message:

Copy File
An unexpected error is preventing the operation. Make a note of this error code, which might be useful if you get additional help to resolve this problem:
Error 0×80004001: Not implemented
File Name
Type: File Type
Size: File Size
Data modified: Data
Try Again|Cancel

When you try to upgrade a computer to Windows Vista, the upgrade option is not available. You may receive a message that resembles the following:

Upgrade has been disabled.
To upgrade to Windows, the hard disk partition must be formatted as NTFS. To reformat the partition, cancel the installation, open a Command Prompt window, and then type c: /fs:ntfs.

A USB drive may not appear in the Windows Connect Now (WCN) Flash Configuration feature of Windows Vista when you click I have a USB thumb drive and then save the network settings. This behavior occurs if the USB drive uses the NTFS file system format.