Windows Server 2008 includes features such as Active Directory, FailOver Clustering, Self-healing NTFS, and Hyper-V. It allows for centralized management of computers and deployment of applications. Server roles and features can continue running with little downtime, and administrators can test clusters of servers. The operating system includes mechanisms for background repair of data structures without taking servers offline, and for partitioning physical servers into virtual computational partitions. It also provides resource management capabilities to control user and process usage based on business priorities.

2.  It automatically comes with most of the technical,
security, management and administrative features new
to windows vista such as the rewritten networking
stack improved image-based intallation, deplyoment
and recovery: improved diagnostics, monitoring, event
logging and reporting tools.

3.  Server Core
Active Directory Role
 FailOver Clustering
Self-healing NTFS
Hyper-V
Windows System Resource Manager
Server Manager

4.  Includes a Variation of Installation.
 Notepad and some Control Pannel Applets, such as
Regional Settings, are Available in Server Core.
 Server Core does not Include the NET Framework,
Internet Explorer, Windows PowerShell or many other
features not related to core server feature.

5. • It is allowed network administrators to centrally
manage connected computers, to set policies for
groups of users, and to centrally deploy new
applications to multiple computers.

6.  Most server features and roles can be kept running
with little to no downtime.
 An administrator can run a set of focused tests on a
collection of servers that are intended to use as nodes
in a cluster.

7.  A worker thread is spawned in the background which
performs a localized fix-up of a damaged data
structures, with only the corrupted files/folders
remaining unavailable without locking out the entire
volume and needing the server to be taken down.

8.  A Partitioning a single physical server into a multiple
small computational patrions.
 It has a ability to act as a Xen virtualization hypervisor
host allowing Xen-enabled guest operating system to
run Virtualized.

9.  It provides resource management and can be used to
control the amount of resources a process or a user can
be use based on business priorities.
 Restrictions can be set to be imposed only on certain
dates as well.

10.  A combination of Manage your Server and Security
Configuration Wizard SCW from Server 2003.
 An improvement of the Configure my Server dialog
the launches bu default on Windows Server 2003
machines.