windows server 2008

Windows Server 2008
From Wikipedia, the free encyclopedia This article or section contains information about computer software currently in development.
The content may change as the software development progresses.

Windows Server 2008
(Part of the Microsoft Windows family)
Screenshot

Screenshot of Windows Server 2008 Beta 3 (Build 6001)
Developer
Microsoft
Web site: www.microsoft.com/windowsserver2008/
Release information
Preview version: Release Candidate 1 (December 5, 2007) info
Source model: Proprietary software
License: Microsoft EULA
Kernel type: Hybrid kernel
Support status
Currently Under Development
Further reading
Features new to Windows Vista
Development of Windows Vista


Windows Server 2008 is the next server operating system from Microsoft. It is the successor to Windows Server 2003. Windows Server 2008 introduces most of the new features from Windows Vista to Windows Server. This is a similar relationship to that between Windows Server 2003 and Windows XP.

It was known as Windows Server Codename "Longhorn" until May 16, 2007, when Bill Gates announced its official title during his keynote address at WinHEC.[1]

Beta 1 was released on July 27, 2005, Beta 2 was announced and released on May 23, 2006 at WinHEC 2006 and Beta 3 was released publicly on April 25, 2007.[2] Release Candidate 0 was released to the general public on September 24, 2007[3] and Release Candidate 1 was released to the general public on December 5, 2007. Windows Server 2008 will be released to manufacturing in the first quarter of 2008 with the official launch taking place on February 27, 2008.[4]Contents [hide]
1 Features
1.1 Server Core
1.2 Active Directory roles
1.3 Terminal Services
1.4 Windows PowerShell
1.5 Self-healing NTFS
1.6 Hyper-V
1.7 Windows System Resource Manager
1.8 Server Manager
1.9 Other features
1.9.1 Core OS improvements
1.9.2 Active Directory improvements
1.9.3 Policy related improvements
1.9.4 Disk management and file storage improvements
1.9.5 Protocol and cryptography improvements
1.9.6 Improvements due to client-side (Windows Vista) enhancements
1.9.7 Miscellaneous improvements
2 Supported platforms
3 Editions
4 See also
5 References
6 External links
6.1 Microsoft
6.2 Others


[edit]
Features
See also: Features new to Windows Vista

Windows Server 2008 is built from the same code base as Windows Vista Service Pack 1; therefore, it shares much of the same architecture and functionality. As the code base is common, it automatically benefits from most of the technical, security, management and administrative features new to Windows Vista such as the new improved rewritten networking stack (native IPv6, native wireless, speed and security improvements); improved image-based installation, deployment and recovery; improved diagnostics, monitoring, event logging and reporting tools; new security features such as Bitlocker and ASLR; improved Windows Firewall with secure default configuration; .NET Framework 3.0 technologies, specifically Windows Communication Foundation, Microsoft Message Queuing and Windows Workflow Foundation; and the core kernel, memory and file system improvements. Processors and memory devices are modelled as Plug and Play devices, to allow hot-plugging of these devices. This allows the system resources to be partitioned dynamically using Dynamic Hardware Partitioning; each partition having its own memory, processor and I/O host bridge devices independent of other partitions.[5]

[edit]
Server Core

Perhaps the most notable new feature of Windows Server 2008 is a new variation of installation called Server Core. Server Core is a significantly scaled-back installation where no Windows Explorer shell is installed, and all configuration and maintenance is done entirely through command line interface windows, or by connecting to the machine remotely using Microsoft Management Console. Server Core also does not include the .NET Framework, Internet Explorer or many other features not related to core server features. A Server Core machine can be configured for several basic roles: Domain controller/Active Directory Domain Services, ADLDS (ADAM), DNS Server, DHCP Server, file server, print server, Windows Media Server, Terminal Services Easy Print, TS Remote Programs, and TS Gateway, IIS 7 web server and Windows Server Virtualization virtual server. This last role is projected to be available at most 180 days after release of Windows Server 2008.

[edit]
Active Directory roles

Active Directory is expanded with identity, certificate and rights management services. Active Directory until Windows Server 2003 allowed network administrators to centrally manage connected computers, to set policies for groups of users, and to centrally deploy new applications to multiple computers. This role of Active Directory is being renamed as Active Directory Domain Services (ADDS).[6] A number of other additional services are being introduced, including Active Directory Federation Services (ADFS), Active Directory Lightweight Directory Services (ADLDS), (formerly Active Directory Application Mode, or ADAM), Active Directory Certificate Services (ADCS), and Active Directory Rights Management Services (ADRMS). Identity and certificate services allow administrators to manage user accounts and the digital certificates that allow them to access certain services and systems. Federation management services enable enterprises to share credentials with trusted partners and customers, allowing a consultant to use his company user name and password to log in on a client's network. Identity Integration Feature Pack is included as Active Directory Metadirectory Services. Each of these services represents a server role.

[edit]
Terminal Services

Windows Server 2008 features major upgrades to Terminal Services. Terminal Services now supports Remote Desktop Protocol 6.0. The most notable improvement is the ability to share a single application over a Remote Desktop connection, instead of the entire desktop. This feature is called Terminal Services Remote Programs. Other features new to Terminal Services include Terminal Services Gateway and Terminal Services Web Access (full web interface). With Terminal Services Gateway, authorized computers are able to connect securely to a Terminal Server or Remote Desktop from the Internet using RDP via HTTPS without implementing a VPN session first. Additional ports do not need to be opened in the firewall, RDP is tunneled through HTTPS. Terminal Services Web Access enables administrators to provide access to the Terminal Services Sessions via a Web interface. TS Web Access comes with an adjustable Webpart for IIS and Sharepoint, which advertises the possible applications and connections to the user. Using TS Gateway and TS Remote Programs, the whole communication is via HTTP(S) and the remote applications appear transparent to the user as if they are running locally. Multiple applications run in the same session to ensure that there is no need for additional licenses per user. Terminal Services Easy Print does not require administrators to install any printer drivers on the server, but guarantees successful client printer redirection and availability of all printer UI and properties for use in remote sessions. Terminal Services sessions are created in parallel, instead of a serial operation - the new session model can initiate at least four sessions in parallel, or more if a server has more than four processors.

[edit]
Windows PowerShell
Screenshot of a sample Windows PowerShell session.
Main article: Windows PowerShell

Windows Server 2008 is the first Windows operating system that will ship with Windows PowerShell, Microsoft's new extensible command line shell and task-based scripting technology.[7] PowerShell is based on object-oriented programming and version 2.0 of the Microsoft .NET Framework and includes more than 120 system administration utilities, consistent syntax and naming conventions, and built-in capabilities to work with common management data such as the Windows Registry, certificate store, or Windows Management Instrumentation. PowerShell's scripting language was specifically designed for IT administration, and can be used in place of cmd.exe and Windows Script Host.

[edit]
Self-healing NTFS

In previous Windows versions, if the operating system detected corruption in the file system of an NTFS volume, it marked the volume "dirty"; to correct errors on the volume, it had to be taken offline. With self-healing NTFS, an NTFS worker thread is spawned in the background which performs a localized fix-up of 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]

[edit]
Hyper-V
Hyper-V architecture
Main article: Hyper-V

Hyper-V is an implementation of operating system-level virtualization, forming a core part of Microsoft's virtualization strategy. This hypervisor virtualizes servers on an operating system's kernel layer. It can be thought of as partitioning a single physical server into multiple small computational partitions. Hyper-V will include the ability to act as a Xen virtualization hypervisor host allowing Xen-enabled guest operating systems to run virtualized. This will not be a part of Windows Server 2008 initially, and will ship within 180 days after it.[9] It will be available only on x64 versions of Windows Server 2008.

[edit]
Windows System Resource Manager
Main article: Windows System Resource Manager

Windows System Resource Manager (WSRM) is being integrated into Windows Server 2008. It provides resource management and can be used to control how much resources a process or a user can use based on business priorities. Process Matching Criteria, which is defined by the name, type or owner of the process, enforces restrictions on the resource usage by a process that matches the criteria. CPU time, bandwidth that it can use, number of processors it can be run on, and memory allocated to a process can be restricted. Restrictions can be set to be imposed only on certain dates as well.

[edit]
Server Manager

Server Manager is a new roles-based management tool for Windows Server 2008[10]. It is a combination of Manage Your Server and Security Configuration Wizard from Windows Server 2003. Server Manager is an improvement of the Configure my server dialog that launches by default on Windows Server 2003 machines. However, rather than serve only as a starting point to configuring new roles, Server Manager gathers together all of the operations users would want to conduct on the server, such as, getting a remote deployment method set up, adding more server roles etc and provides a consolidated, portal-like view about the status of each role.

[edit]
Other features

Other new or enhanced features include:

[edit]
Core OS improvements
Fully multi-componentized operating system.
Improved hot patching, a feature that allows non-kernel patches to occur without the need for a reboot.
Support for being booted from Extensible Firmware Interface (EFI)-compliant firmware on x86-64 systems.

[edit]
Active Directory improvements
A new "Read-Only Domain Controller" operation mode in Active Directory, intended for use in branch office scenarios where a domain controller may reside in a low physical security environment. The RODC holds a non-writeable copy of Active Directory, and redirects all write attempts to a Full Domain Controller. It replicates all accounts except sensitive ones. In RODC mode, credentials are not cached by default. Moreover, only the Domain Controller running the PDC-Emulator needs to run Windows Server 2008. Also, local administrators can log on to the machine to perform maintenance tasks without requiring administrative rights on the domain.
Restartable Active Directory allows ADDS to be stopped and restarted from the Management Console or the command-line without rebooting the domain controller. This reduces downtime for offline operations and reduces overall DC servicing requirements with Server Core. ADDS is implemented as a Domain Controller Service in Windows Server 2008.

[edit]
Policy related improvements
All of the Group Policy improvements from Windows Vista. Group Policy Management Console (GPMC) is built-in. The Group Policy objects are indexed for search and can be commented on.[11]
Policy-based networking with Network Access Protection, improved branch management and enhanced end user collaboration. Policies can be created to ensure greater Quality of Service for certain applications or services that require prioritization of network bandwidth between client and server.
Granular password settings within a single domain - ability to implement different password policies for administrative accounts on a "group" and "user" basis, instead of a single set of password settings to the whole domain.

[edit]
Disk management and file storage improvements
The ability to resize hard disk partitions without stopping the server, even the system partition. (Note: this only applies to simple and spanned volumes. Stripes cannot be extended or shrunk.)
Shadow Copy based block-level backup which supports optical media, network shares and Windows Recovery Environment.
DFS enhancements - SYSVOL on DFS-R, Read-only Folder Replication Member. There is also support for domain-based DFS namespaces that exceed the previous size recommendation of 5,000 folders with targets in a namespace. [12]
Several improvements to failover clusters (High-availability clusters).[13]
Internet Storage Naming Server (iSNS) enables central registration, deregistration and queries for iSCSI hard drives.

[edit]
Protocol and cryptography improvements
Support for 128- and 256-bit AES encryption for the Kerberos authentication protocol.
New cryptography (CNG) API which supports elliptic curve cryptography and improved certificate management.
Secure Socket Tunneling Protocol, a new Microsoft proprietary VPN protocol.
AuthIP, a Microsoft proprietary extension of the IKE cryptographic protocol used in IPsec VPN networks.
Server Message Block 2.0 protocol in the new TCP/IP stack provides a number of communication enhancements, including greater performance when connecting to file shares over high-latency links and better security through the use of mutual authentication and message signing.

[edit]
Improvements due to client-side (Windows Vista) enhancements
Searching Windows Server 2008 servers from Windows Vista clients delegates the query to the server, which uses the Windows Search technology to search and transfer the results back to the client.
In a networked environment with a print server running Windows Vista, clients can render print jobs locally before sending them to print servers to reduce the load on the server and increase its availability.
Event forwarding aggregates and forwards logs of subscribed Windows Vista client computers back to a central console. Event forwarding can be enabled on the client subscribers from the central server directly from the event management console.
Offline Files are cached locally so that they are available even if the server is not, with copies seamlessly updating when the client and server are reconnected.

[edit]
Miscellaneous improvements
Windows Deployment Services replacing Automated Deployment Services and Remote Installation Services. Windows Deployment Services (WDS) support an enhanced multicast feature when deploying operating system images. [14]
Internet Information Services 7 - Increased security, xcopy-deployment, improved diagnostic tools, delegated administration.
An optional "Desktop Experience" component provides the same Windows Aero user interface as Windows Vista, both for local users, as well as remote users connecting through Remote Desktop.

[edit]
Supported platforms

Most editions of Windows Server 2008 will be available in x64 (64-bit) and x86 (32-bit) versions. Windows Server 2008 for Itanium-based Systems will support IA-64 processors. The IA-64 version will be optimized for high workload scenarios like database servers and Line of Business (LOB) applications. As such it will not be optimized for use as a file server or media server. Microsoft has announced that Windows Server 2008 will be the last 32-bit Windows server operating system.[15]

[edit]
Editions

Windows Server 2008 will be available in the editions listed below,[16] similar to Windows Server 2003.
Windows Server 2008 Standard Edition (x86 and x86-64)
Windows Server 2008 Enterprise Edition (x86 and x86-64)
Windows Server 2008 Datacenter Edition (x86 and x86-64)
Windows Web Server 2008 (x86 and x86-64)
Windows Storage Server 2008 (x86 and x86-64)
Windows Small Business Server 2008 (Codenamed "Cougar") (x86-64) for small businesses
Windows Essential Business Server 2008 (Codenamed "Centro") (x86-64) for medium-sized businesses [17]
Windows Server 2008 for Itanium-based Systems (IA-64)

Server Core is available in the Standard, Enterprise and Datacenter editions. It is not available in Web edition or in the Itanium edition. It is important to note that Server Core is simply a server role supported by some of the editions, and not a separate edition by itself. As of Beta 3, each edition has a separate evaluation DVD.

[edit]
See also
Development of Windows Vista
Windows Server System
List of Microsoft software codenames

[edit]
References
^ Miller, Michael J. (2007-05-15). Gates at WinHec 2007: Windows Server 2008, Rally, Home Server and More. Forward Thinking. Retrieved on 2007-07-09.
^ Lowe, David (2007-04-25). Beta 3 is Go!. Windows Server Division WebLog. Microsoft. Retrieved on 2007-04-25.
^ Ralston, Ward (2007-09-24). Windows Server 2008 Rc0 Released!. Windows Server Division WebLog. Microsoft. Retrieved on 2007-09-24.
^ Nate Mook. New Windows Server, Visual Studio, SQL Server to Launch in February. BetaNews. Retrieved on 2007-07-11.
^ Dynamic Hardware Partitioning Architecture. MSDN. Retrieved on 2007-07-23.
^ Hynes, Byron (November 2006). The Future of Windows: Directory Services in Windows Server 2008. TechNet Magazine. Retrieved on 2007-05-02.
^ Snover, Jeffrey (2007-03-28). Announced: PowerShell to Ship in Windows Server 2008. Blog of Windows PowerShell team. Microsoft. Retrieved on 2007-04-06.
^ Loveall, John (2006). Storage improvements in Windows Vista and Windows Server 2008 (PowerPoint). Microsoft Corporation. Retrieved on 2007-07-09.
^ Microsoft Extends Virtualization Strategy, Outlines Product Road Map. Microsoft (2006-05-22). Retrieved on 2007-07-09.
^ Server Manager. Windows Server 2008 Technical Library. Microsoft TechNet (2007-06-25). Retrieved on 2007-05-02.
^ Keith Ward. Top 10 Overlooked Windows Server 2008 Features, Part 2. Redmond Developer News.
^ Breaking the 5K Folder “Barrier” in Domain-Based Namespaces: Filing Cabinet blog
^ Failover Clustering with Windows Server 2008. Microsoft (2007-01-17). Retrieved on 2007-07-09.
^ Multicasting OS deployments with Windows Server 2008
^ Heaton, Alex (2007-05-18). On 64-bit and Windows Client. Windows Vista Team Blog. Retrieved on 2007-07-09.
^ Windows Server 2008 Product Editions. Microsoft (2007-04-25). Retrieved on 2007-07-09.
^ Annoucing Windows Essential Business Server

[edit]
External links

[edit]
Microsoft
Official site for Windows Server 2008
Microsoft TechCenter for Windows Server 2008
New Networking Features in Windows Server 2008 and Windows Vista — lengthy article from Microsoft Technet covering new networking features in detail
Changes in Functionality from Windows Server 2003 with SP1 to Windows Server 2008
Windows Server 2008 Technical Overview

[edit]
Others
Screenshots of Server Components from Latest Longhorn Builds
ZDnet UK article
News.com
winsupersite.com Preview
winsupersite.com Preview 2
Windows Server 2008 Updates site