If you're familiar with Microsoft's Dfs add-on for Windows NT 4.0, or Windows 2000's (Win2K's) upgraded feature with the same name, you might notice that NTFS directory junctions have strong similarities to Dfs. However, NTFS directory junctions and Dfs have significant differences, and you use the features for different purposes. Table A provides a summary of the differences between these two technologies.

TABLE A: Comparison of Dfs Junction Points and NTFS Directory Junctions
Feature Dfs Junction Points NTFS Directory Junctions
Junction point origin Local network share Local NTFS directory
Junction point target Any network share Any valid local directory
Fault tolerance capabilities Yes (in Win2K) No
Recoverable Yes Yes (through Chkdsk)
Multiple-target capable Yes No
Clustering support Yes No
API Yes Yes
Graphical management tools Yes Minimal
Requirements Win2K or NT Server 4.0 Win2K with NTFS 5.5 (NTFS5)