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Business Requirements for File Services

Business requirements include:
High availability
Geographic distribution
File storage management
• Access to file services is a critical service in a Windows Server 2008 network environment

SMB Enhancements in Windows Server 2008

SMB 2.0:
• Is supported by Windows Vista and Windows Server 2008
• Provides better performance over WAN links and VPNs
• Recovers better from short interruptions in network availability

What Is Distributed File System?

Publish files
Collect files
Loose collaboration
DFS scenarios:
• DFS enables replication from one server to another
New DFS Features in Windows Server 2008
New Namespaces features are:
• Access-based enumeration
• Cluster support for stand-alone namespaces
• Windows Server 2008 mode to enable to new features
New DFS Replication features are:
• Content freshness check
• Improved handling of unexpected shutdowns
• Faster replication and better bandwidth utilization
• Propagation report to test replication
• Replicate now option
Interoperability with Previous Versions of DFS
Interoperability considerations:
• Namespaces within the same DFS root can use different replication types
• Namespace features are limited by the DFS version being used
• Windows Server 2003 and Windows Server 2000 use FRS for replication
• Windows Server 2003 R2 and Windows Server 2008 use DFS replication or FRS replication
• Each set of replicated folders can use only one type of replication
• Use the appropriate tool to manage each type of  replication
Guidelines for Designing DFS Namespace Availability
• Increase availability for domain-based namespaces by using multiple namespace servers
• Increase availability for stand-alone namespaces by using failover clustering
• Increase availability for folders by using multiple targets
• Use stand-alone namespaces when there are more than 5,000 folders

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