Services for UNIX vs Windows Server 2003 R2 UNIX Interoperability
Services for UNIX is a software package which helps integrating UNIX systems in your Windows environment. With Services for UNIX 3.5 (which is the latest version of this product line) you get the following components -
Read more aboure these components here.
Services for UNIX 3.5 is the latest version of this product line and also the last one. Well, that doesn't mean these components will not be there and will not be improved.
Windows Server 2003 R2 already ships with improved version of some of the above components. These components are categorized as -
With Windows Server 2003 R2, you can run these components in 64-bit (AMD64) systems.
Client for NFS, Server for NFS, User Name Mapping and Server for NFS Authentication make Microsoft Services for Network File System. Identity Management for UNIX (IdMU) comprises of Server for NIS and Password Synchronization. Interix has been renamed Subsystem for UNIX-based Applications.
So as you can see Gateway for NFS, Windows Remore Shell Service, Server for PCNFS and Telnet server couldn't make their way to R2. Although, you can still configure and use SUA telnetd and rshd for remote shell access.
NFS components in R2 also have improved performance benefits. Some major changes which are introduced in these components in R2 are -
Complete list of what's new in R2 can be found here.