Now for new features in Windows 2000 Server-this is based on Release Candidate 2.0, which contains almost every feature of the final release.
1) Windows 2000 (Professional & Server) now uses a new file system known as NTFS 5.0. The new NTFS 5.0 file system includes features that are not compatible with previous versions of NTFS. For example, NTFS 5.0 can encrypt files, and it can also support the FAT32 file system. Previous versions of NTFS did not support the FAT32 file system.
2) When installing Windows NT Server 4.0, you can select to install it as a PDC, BDC, member server, or stand-alone server. However, when installing Windows 2000 Server, there is now only 1 option: You can only install Windows 2000 Server as a member server. Then you can promote it to a domain controller using the "DCPROMOTE" utiltiy later on. PDCs and BDCs are no longer part of Windows 2000.
3) One of the main features of Windows 2000 Server is called Active Directory. Trust relationships (domain models) under Active Directory are always transitive. For example, if DomainA trusts DomainB, then DomainB will automatically trust DomainA. This was not the case under NT 4.0. Under NT 4.0 if DomainA trusts DomainB, then DomainB does not automatically trust DomainA; if you want DomainB to trust DomainA, then you had to configure a 2 way trust under NT 4.0. Under Windows 2000 Server, trust relationships are transitive, thus simplified. Also, under Active directory, Microsoft uses DNS ( Domain Name System) to resolve computer names by default. In fact, the entire active directory structure is based on DNS, or even DDNS (Dyanmic DNS) if you configure it. Microsoft has embraced the TCP/IP protocol and DNS as its default networking language and name resolver.
