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Advantages of Windows 2003
1. Domains can be renamed or moved to a different level in an AD tree.
2. Schema attributes can be deleted as well as added.
3. Any Domain Controller can cache the Global Catalog thus preventing user logon problems if no Global Catalog server is available.
4. AD Replication can be set not to use compression.
5. Cross-Forest Transitive Trusts can be created.
6. Many administrative tools allow drag-and-drop and there are more configuration and management wizards.
7. Most services are disabled by default in 2003 instead of enabled as in Windows 2000.2003
allows partial synchronizations of the Global Catalog 2000 had always to have full synchronizations.
8. Support for IPv6. Ping and Tracert have extra IPv6 options.
9. Supports XML web services.
10. A new service called Volume Shadow Copy takes periodic snapshots of a hard drive making it easier to take backups and recover deleted files. Users can even be allowed to recover previous versions of files by themselves by using the Previous Versions client.
11. A Global Catalog server can be built from backup media instead of by replication.
12. IPSec Nat Traversal – NAT-T – allows IPSec VPN clients and servers to pass through NAT firewalls. This is likely to lead to the wider adoption of L2TP VPNs.
13. Distributed File System DFS has had significant improvements made to it. For example DFS replicas can now be prestaged to avoid excessive initial file replication.
14. Multiple DFS Roots per server can be created (Enterprise and Datacenter editions only).
15. Print queue redundancy can be achieved by storing them on multiple servers.
16. Active Directory Migration Tool v.2.0 can now migrate users, computers, groups and passwords from an NT domain and can also perform the cross-forest migration of objects.
17. Terminal Server allows clients to map their local drives and printers
18. The FTP server allows different default directories to be assigned to different users.
19. There’s a Security Configuration and Analysis tool to check a server’s security settingsDNS AD-integrated zones are stored in the Application Partition of a forest so aren’t replicated to domain controllers which aren’t DNS servers.
20. Regedit.exe and Regedt32.exe have been amalgamated into a single utility which takes the best features of each. Both files still exist but run the same utility.
21. The DNS server has added flexibility with the new options of stub zones and conditional forwarding.
22. Internet Information Server 6 (IIS 6) has the ability to keep worker processes from different websites and web applications separate so that if one application crashes then other websites running on the same server remain unaffected.
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