Comparison of Windows Server 2003 Editions
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Comparison of Windows Server 2003 Editions
Updated: March 28, 2003
Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server2003 with SP2
The following table describes features supported by the Microsoft Windows Server 2003 operating system, and
illustrates which editions of the operating system support which features.
= Feature included
= Feature partially supported
= Feature not included
Category Feature and Description StandardEdition
EnterpriseEdition
DatacenterEdition
WebEdition
Hardware
Specifications
64-bit Support for Intel Itanium-
based Computers(1)
Support for 64-bit processing deliversfar higher scalability than 32-bit file
servers by providing a greatly enlargedvirtual address space and paged pool
area, the ability to handle increasednumbers of users and connections, and
increased hardware reliability throughpredictive error checking and
notification of failures.
HardwareSpecifications
Hot Add Memory(2, 3)Hot Add Memory allows ranges of
memory to be added to a computer andmade available to the operating system
and applications as part of the normalmemory pool. This does not require
rebooting the computer and involves no
downtime. This feature only operateson servers that have hardware supportfor adding memory while the server is
operating. Most existing servers do nothave such hardware support and can be
damaged if memory is installed while
the power is on. It is recommended thatyou consult your server operator's
manual for more information.
HardwareSpecifications
Non-Uniform Memory Access(3)As processor clock rates continue to
increase and put pressure on processorbus architectures, scaling is addressed
by implementing multiple processorbuses. This can result in an architecture
consisting of processors and memoryarranged in smaller subsystems called
nodes. Processor access time tomemory in other nodes is longer than
access time to memory in the samenode. This results in Non-Uniform
Memory Access (NUMA) across thesystem. The longer access times to
other nodes can degrade softwareperformance. The operating system
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attempts to limit degradation by
scheduling threads from the sameprocess on processors that are in the
same node, and allocating all memoryrequests within the same node as the
processor making the request. Inaddition, an API is included to make
NUMA architecture information availableto application software. These features
ensure that memory accesses are localto a node wherever possible, and limit
software degradation caused by theNUMA architecture.
Hardware
Specifications
Datacenter Program
The Datacenter Program providescustomers with an integrated hardware,
software, and service offering, deliveredby Microsoft and qualified server
vendors such as original equipmentmanufacturers (OEMs).
Hardware
Specifications
2-GB RAM Maximum
RAM facilitates improved systemscalability and performance. The moreRAM added to a server beyond
minimum requirements, the morememory available for applications to
use. Designed for building and hostingWeb applications, Web pages, and XML
Web services, Windows Server 2003,Web Edition supports new systems with
up to 2 GB of RAM.
Hardware
Specifications
4-GB RAM Maximum
RAM facilitates improved systemscalability and performance. The more
RAM added to a server beyond
minimum requirements, the morememory available for applications touse. Designed for small organizations
and departmental use, Windows Server2003, Standard Edition supports new
systems with up to 4 GB of RAM.
HardwareSpecifications
32-GB RAM MaximumRAM facilitates improved system
scalability and performance. The moreRAM added to a server beyond
minimum requirements, the more
memory available for applications touse. Designed for demanding enterprise
applications, Windows Server 2003,Enterprise Edition supports new
systems with up to 32 GB of RAM.
HardwareSpecifications
64-GB RAM Maximum(4)RAM facilitates improved system
scalability and performance. The moreRAM added to a server beyond
minimum requirements, the morememory available for applications to
use. Designed for mission-criticalapplications, the 32-bit version of
Windows Server 2003, Datacenter
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Edition supports up to 64 GB of RAM on
x86-based computers. The 64-bitversion of Windows Server 2003,
Enterprise Edition supports systemswith up to 64 GB of RAM.
Hardware
Specifications
512-GB RAM Maximum(5)
RAM facilitates improved systemscalability and performance. The more
RAM added to a server beyondminimum requirements, the more
memory available for applications touse. The 64-bit version of Windows
Server 2003, Datacenter Editionsupports systems with up to 512 GB of
RAM.
Hardware
Specifications
2-Way Symmetric Multiprocessing
The Windows Server 2003 familysupports single or multiple CPUs that
conform to the symmetricmultiprocessing (SMP) standard. Using
SMP, the operating system can run
threads on any available processor,which makes it possible for applicationsto use multiple processors when
additional processing power is requiredto increase the capability of a system.
New features include SMP lockingperformance, improved registry
performance, and increased TerminalServer sessions. Designed for building
and hosting Web applications, Webpages, and XML Web services, Windows
Server 2003, Web Edition supports newsystems with up to two-way SMP.
Hardware
Specifications
4-Way Symmetric Multiprocessing
The Windows Server 2003 familysupports single or multiple CPUs thatconform to the symmetric
multiprocessing (SMP) standard. UsingSMP, the operating system can run
threads on any available processor,which makes it possible for applications
to use multiple processors whenadditional processing power is required
to increase the capability of a system.New features include SMP locking
performance, improved registryperformance, and increased Terminal
Server sessions. Designed for smallorganizations and departmental use,
Windows Server 2003, Standard Edition
supports new systems with up to four-way SMP.
Hardware
Specifications
8-Way Symmetric Multiprocessing
The Windows Server 2003 familysupports single or multiple CPUs that
conform to the symmetricmultiprocessing (SMP) standard. Using
SMP, the operating system can runthreads on any available processor,
which makes it possible for applications
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to use multiple processors when
additional processing power is requiredto increase the capability of a system.
New features include SMP lockingperformance, improved registry
performance, and increased TerminalServer sessions. Designed for
demanding enterprise applications,Windows Server 2003, Enterprise
Edition supports new systems with upto eight-way SMP. This includes the 64-
bit edition of Windows Server 2003,Enterprise Edition.
Hardware
Specifications
32-Way Symmetric Multiprocessing
The Windows Server 2003 familysupports single or multiple CPUs that
conform to the symmetricmultiprocessing (SMP) standard. Using
SMP, the operating system can runthreads on any available processor,
which makes it possible for applicationsto use multiple processors when
additional processing power is requiredto increase the capability of a system.New features include SMP locking
performance, improved registryperformance, and increased Terminal
Server sessions. Designed for mission-critical applications, Windows Server
2003, Datacenter Edition supports newsystems with 8-way to 32-way SMP.
This includes the 64-bit edition ofWindows Server 2003, Datacenter
Edition.
HardwareSpecifications
64-Way Symmetric MultiprocessingThe Windows Server 2003 family
supports single or multiple CPUs thatconform to the symmetric
multiprocessing (SMP) standard. UsingSMP, the operating system can run
threads on any available processor,which makes it possible for applications
to use multiple processors whenadditional processing power is required
to increase the capability of a system.New features include SMP locking
performance, improved registry
performance, and increased TerminalServer sessions. Designed for mission-
critical applications, Windows Server2003, Datacenter Edition supports new
systems with up to 64-way SMP. The
support for over 32 processors is onlyavailable with the 64-bit edition ofWindows Server 2003, Datacenter
Edition.Microsoft also offers a 128-way SKU for
Windows Server 2003, DatacenterEdition so Windows can run on a 128-
processor computer. However, thelargest partition supported would be 64
processors.
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Directory
Services
Active Directory Directory Service
Active Directory is the directory servicefor Windows Server 2003, Standard
Edition; Windows Server 2003,Enterprise Edition; and Windows Server
2003, Datacenter Edition. It storesinformation about objects on the
network and makes this informationeasy for administrators and users to
find and use. Active Directory uses astructured data store as the basis for a
logical, hierarchical organization ofdirectory information.
Directory
Services
Microsoft Identity Integration
Server SupportMicrosoft Identity Integration Server
(MIIS) is a centralized service thatstores and integrates identity
information from multiple directories inan organization. The goal of this
metadirectory is to provide anorganization with a unified view of all
known identity information about users,applications, and network resources. Ametadirectory solves important
business issues that result from havinginformation stored in multiple, disparate
data repositories throughout anorganization. MIIS is available via
Microsoft Consulting Services (MCS) orvia an MIIS partner engagement.
Security Services Internet Connection Firewall
Internet Connection Firewall (ICF)provides Internet security in the form of
a firewall. Designed for use in the homeand small business, ICF provides
protection on computers directlyconnected to the Internet. This feature
is available for LAN or dial-up networks,virtual private networks (VPNs), and
Point-to-Point Protocol over Ethernet(PPPoE) connections. It also prevents
scanning of ports and resources (suchas file and printer shares) from external
sources.
Security Services Public Key Infrastructure,
Certificate Services, and SmartCards
By using Certificate Services andcertificate management tools, you can
deploy your own public key
infrastructure (PKI). With a PKI, youcan implement standards-basedtechnologies, such as smart card logon
capabilities, client authenticationthrough Secure Sockets Layer (SSL)
and Transport Layer Security (TLS),secure e-mail, digital signatures, and
secure connectivity using InternetProtocol security (IPSec). By using
Certificate Services, you can set up andmanage certification authorities (CAs)
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that issue and revoke X.509 v3
certificates. This means that you do nothave to depend on commercial client
authentication services, although youcan integrate commercial client
authentication into your PKI if youchoose.
Terminal Services Remote Desktop for Administration
With Remote Desktop for Administration(formerly known as Terminal Services in
Remote Administration mode), you canadminister a computer from virtually
any computer on your network. Basedon Terminal Services technology,
Remote Desktop for Administration isspecifically designed for server
management.
Terminal Services Terminal Server
Terminal Server lets you deliverWindows-based applications or the
Windows desktop itself to virtually
any computing device, including thosethat cannot run Windows. For example,a user can access a virtual Windows XP
Professional desktop and x86-basedWindows applications from hardware
that cannot run the software locally.Terminal Server provides this capability
for both Windows-based and nonWindows-based client devices. When a
user runs an application on TerminalServer, all of the application execution
takes place on the server, and onlykeyboard, mouse, and display
information traverses the network.Note
y Terminal Server mode is notincluded on computers running
Microsoft Windows Server 2003,
Web Edition; however, Remote
Desktop for Administration is
available on Windows Server
2003, Web Edition.
Terminal Services Terminal Server Session Directory
Terminal Server Session Directory
allows users to easily reconnect to adisconnected session in a load-balancedTerminal Server farm. Session Directory
is compatible with the Windows Server2003 Network Load Balancing service,
and is supported by third-party externalload-balancer products from
manufacturers such as F5 Networks(formerly F5 Labs) and Radware.
Note
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y The Session Directory Serviceruns on all editions of Windows
Server 2003; however, to
participate in a Session Directory,
the server must be running
Windows Server 2003, Enterprise
Edition or Windows Server 2003,
Datacenter Edition (including the
64- bit editions of the Windows
Server 2003 family).
ClusteringTechnologies
Network Load BalancingPreviously known as Windows NT Load
Balancing Service (WLBS), NetworkLoad Balancing distributes incoming
TCP/IP traffic among multiple servers.
Your clustered applications, especiallyWeb server applications, can handlemore traffic, provide higher availability,
and provide faster response times.
ClusteringTechnologies
Cluster ServiceA cluster is a group of independent
computers, called nodes, that work
together to run a common set ofapplications and provide high
availability. If one node on the clusterfails, the application can be failed over
to the next node. Server clusters of upto eight nodes are available only in
Windows Server 2003, EnterpriseEdition and Windows Server 2003,
Datacenter Edition.
Communicationsand Networking
Services
Virtual Private Network SupportYou can give users ready access to your
organization's network even when theyare out of the office and reduce the
cost of this access by implementing avirtual private network (VPN). The VPN
connection creates a secure tunnelacross the Internet into the private
network. There are two types ofVPNtechnologies in the Windows Server
2003 family: Point-to-Point TunnelingProtocol (PPTP), which employs user-
level Point-to-Point Protocol (PPP)
authentication methods and MicrosoftPoint-to-Point Encryption (MPEE) for
data encryption; and Layer TwoTunneling Protocol (L2TP) with Internet
Protocol security (IPSec). L2TP employsuser-level PPP authentication methods
and computer-level certificates withIPSec for data encryption. On Windows
Server 2003, Web Edition and WindowsServer 2003, Standard Edition, you can
create up to 100 PPTP ports and up to
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100 L2TP ports. However, Windows
Server 2003, Web Edition, can acceptonly one VPN connection at a time.
Windows Server 2003, StandardEdition, can accept up to 1,000
concurrent VPN connections via theports. If 1,000 VPN clients are
connected, further connection attemptsare denied until the number of
connections falls below 1,000. WindowsServer 2003, Enterprise Edition and
Windows Server 2003, DatacenterEdition support unlimited concurrent
users.
Communicationsand Networking
Services
Internet Authentication ServiceInternet Authentication Service (IAS) is
the Microsoft implementation of aRemote Authentication Dial-in User
Service (RADIUS) server and proxy. Asa RADIUS server, IAS performs
centralized connection authentication,authorization, and accounting for many
types of network access includingwireless, authenticating switch, andremote access dial-up and virtual
private network (VPN) connections. As aRADIUS proxy, IAS forwards
authentication and accountingmessages to other RADIUS servers. You
can configure IAS in Windows Server2003, Standard Edition, with a
maximum of50 RADIUS clients and amaximum of 2 remote RADIUS server
groups. With IAS in Windows Server2003, Enterprise Edition, and Windows
Server 2003, Datacenter Edition, youcan configure an unlimited number of
RADIUS clients and remote RADIUSserver groups. In addition, you can
configure RADIUS clients by specifyingan IP address range.
Communications
and NetworkingServices
Network Bridge
Network Bridge provides an easy wayfor you to connect different LAN
segments, allowing users to bridgeconnections between different
computers and devices on their
network, even when they connect to thenetwork through different methods.
Network bridge is supported in WindowsServer 2003, Standard Edition and
Windows Server 2003, Enterprise
Edition.
Communications
and NetworkingServices
Internet Connection Sharing
By using the Internet ConnectionSharing (ICS) feature of Network
Connections, you can connect yourhome network or small office network
to the Internet. For example, you mighthave a home network that connects to
the Internet through a dial-upconnection. By enabling ICS on the
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computer that uses the dial-up
connection, you can provide networkaddress translation (NAT), addressing,
and name resolution services for all thecomputers on your network.
Communications
and NetworkingServices
IPv6
Internet Protocol version 6 (IPv6) is asuite of Internet standard protocols that
will become the next generation ofnetwork layer protocols for the Internet.
IPv6 is designed to solve many of theproblems of the current version of IP
(known as IPv4) with regard to addressdepletion, security, autoconfiguration,
extensibility, and more.
File and Print
Services
Distributed File System
Distributed File System (DFS) isenhanced for Windows Server 2003,
Enterprise Edition and Windows Server2003, Datacenter Edition by allowing
multiple DFS roots on a single server.
You can use this feature to hostmultiple DFS roots on a single server,reducing administrative and hardware
costs of managing multiple namespacesand multiple replicated namespaces.
Using Active Directory, DFS shares canbe published as volume objects and
administration can be delegated.Windows Server 2003, Standard Edition
supports only one DFS root. DFS ispartially supported in Windows Server
2003, Web Edition, where it is possibleto access DFS files and act as a node in
DFS tree, but only 10 concurrentincoming server message block (SMB)
connections are permitted.
File and Print
Services
Encrypting File System
Encrypting File System (EFS)complements other access controls and
provides an additional level ofprotection for your data. EFS runs as an
integrated system service on all disks(including clustered disks), making it
easy to manage, difficult to attack, andtransparent to the user.
File and PrintServices
Shadow Copies for Shared FoldersShadow Copy Restore (Previous
Versions) provides point-in-time copiesfor network folders. Users can easily
access previous versions of their filesthrough Windows Explorer by right-
clicking a file or folder.
File and PrintServices
Removable StorageRemovable Storage makes it easy to
track your removable storage media(tapes and optical discs) and to manage
the hardware libraries (such aschangers and jukeboxes) that contain
them. Because removable optical discs
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and tapes are less expensive per
megabyte than hard disks, RemovableStorage and Remote Storage can
decrease your costs.
File and PrintServices
Remote StorageRemote Storage uses criteria that you
specify to automatically copy little-usedfiles to removable media. If hard disk
space drops below specified levels,Remote Storage removes the cached
file content from the disk. If the file isneeded later, the content is
automatically recalled from storage.Remote Storage now supports
migration to magneto-optical media.Remote Storage is not available in
Windows Server 2003, Standard Editionor Windows Server 2003, Web Edition.
File and PrintServices
Fax ServiceFax Service lets users send and receive
faxes by using a modem or a fax board.
You can also send faxes by using yournetwork. You can print to fax from anyapplication, send a cover page, and
track and monitor fax activity. Newwizards simplify configuration and fax
sending. Also, developers can writeapplications using the new fax APIs to
automatically send faxes from theirapplications.
File and PrintServices
Services for MacintoshServices for Macintosh provides
Macintosh users with access to filesstored on a computer running Windows
Server 2003. The file server is
accessible over TCP/IP networks andover AppleTalk networks. Print servicesallow Macintosh clients to print to
Windows NT or Windows 2000basedprint shares via the AppleTalk protocol.
In addition to the print server, there isa 300 dpi PostScript RIP engine that
allows Macintosh-generated PostScriptprint jobs to be sent to non-PostScript
printers, such as inkjet printers.
Management
Services
IntelliMirror Management
TechnologiesTo help reduce costs, administrators
need high levels of control over portableand desktop systems. IntelliMirror
management technologies provide thiscontrol on client systems running
Windows 2000 Professional or WindowsXP Professional. You can use
IntelliMirror to define policies based onbusiness roles, group memberships,
and locations. With these policies,Windows 2000 Professional desktops
and Windows XP Professional desktopsare automatically reconfigured to meet
a specific user's requirements each time
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that user logs on to the network,
regardless of where the user logs on.
ManagementServices
Group Policy ResultsGroup Policy Results allows
administrators to see the effect a GroupPolicy setting has on a targeted user or
computer. Included in the Group PolicyManagement Console, Group Policy
Results provides administrators with apowerful and flexible base-level tool to
plan, monitor, and troubleshoot GroupPolicy.
Group Policy Results uses WindowsManagement Instrumentation (WMI),
making the information available toadministrators via the console and
directly to other managementapplications via WMI.
ManagementServices
Windows ManagementInstrumentation Command Line
Windows Management Instrumentation
(WMI) provides unified access to themanagement functions of local andremote systems. By adding command-
line access to WMI, administrators candirectly access these management
functions and create queries based onthis data. You can monitor local and
remote Windows Server 2003 andWindows XP systems directly, to view
results through the command line or toretrieve the management data in XML
format and processed into built-in orcustom XSL output formats. WMI
follows the specifications of theindustry-standard Common Information
Model (CIM) defined by the DistributedManagement Task Force (DMTF).
ManagementServices
Remote OS InstallationRemote OS Installation uses Group
Policy, Remote Installation Services,and Pre-Boot eXecution Environment
(PXE) server hardware to re-image aserver with a clean install of a Windows
Server 2003based environment. Thisfeature can also be used to re-image
Windows 2000 and Windows XPdesktops.
Administrators can use Remote OSInstallation and IntelliMirror together to
simplify the task of exchanging or
bringing new computers into thenetwork environment:
y Remote OS Installation canestablish a full initial working set
image directly to the computer
hardware.
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language runtime and a unified set of
class libraries that include WindowsForms, ADO.NET, ASP.NET, and other
capabilities. The .NET Frameworkprovides a fully managed, protected,
and feature-rich application executionenvironment, simplified development
and deployment, and seamlessintegration with a wide variety of
programming languages.
.NET ApplicationServices
Internet Information Services 6.0Internet Information Services (IIS) 6.0
is a full-featured Web server thatprovides the foundation for the
Windows Server 2003 family andexisting Web-based applications and
XML Web services. IIS 6.0 offersdedicated application mode, which runs
all application code in an isolatedenvironment. IIS 6.0 also supports Web
gardens, in which a set of equivalentprocesses on a computer each receive a
share of the requests normally servedby a single process, achieving bettermultiprocessor scalability.
.NET Application
Services
ASP.NET(2)
ASP.NET is the engine for Web-basedapplications and XML Web services. It
brings rapid application development tothe server. Part of the class library in
the .NET Framework, ASP.NET pagesuse a compiled, event-driven
programming model that improvesperformance and enables the separation
of application logic and user interface.
.NET ApplicationServices Enterprise UDD
I ServicesUniversal Description, Discovery, andIntegration (UDDI) is an industry
specification for publishing and locatinginformation about Web services. Some
products in the Windows Server 2003family include UDDI Services, a Web
service that provides UDDI capabilitiesfor use within an enterprise or across
organizations. UDDI Services is notincluded with Windows Server 2003,
Web Edition. In addition, WindowsServer 2003, Standard Edition, supports
only stand-alone installations of UDDIServices. Distributed installation
support is available with Windows
Server 2003, Enterprise Edition andWindows Server 2003, DatacenterEdition. In a stand-alone installation of
UDDI Services, both the UDDI Webserver component and the UDDI
database component are installed on asingle server. In a distributed
installation, UDDI components aredistributed across multiple servers.
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Multimedia
Services
Windows Media Services
Windows Media Services providestreaming audio and video over
corporate intranets and the Internet. InWindows Server 2003, Enterprise
Edition and Windows Server 2003,Datacenter Edition, Windows Media
Services delivers advanced streamingfunctionality such as multicasting,
wireless network support, Internetauthentication, server plug-ins, and
cache/proxy APIs.
(1) Applies to 64-bit versions only.
(2) Not supported in 64-bit versions of Windows Server 2003.
(3) Might be limited by lack of support by OEM hardware.
(4) Both the 32-bit version of Windows Server 2003, Datacenter Edition and the 64-bit version of Windows Server2003, Enterprise Edition support up to 64 GB of RAM.
(5) The 64-bit version of Windows Server 2003, Datacenter Edition supports up to 512 GB of RAM.