B r i e f
Licensing Microsoft Windows Server 2003 R2 to Run with Virtualization Technologies
VMwareESX Server, VMware VMotion, SWsoft Virtuozzo, and Microsoft System Center Virtualization
Machine Manager
May 2007
Corporate  Academic
Open License Open License Value  Select License  Academic Select  Enterprise Agreement
Summary
In this document, we discuss how the Microsoft® Windows Server® 2003 R2 operating system and other
Microsoft server products are licensed when used with virtualization technologies VMware ESX Server,
VMware VMotion, SWsoft Virtuozzo, and Microsoft System Center Virtual Machine Manager. In addition, we
also compare costs, both between different Windows Server editions and between the different virtualization
technologies.
Summary ......................................................................................................................................................................1
Introduction to Licensing Virtualization Technologies ........................................................................... 2
Understanding Virtualization Rights ............................................................................................... 3
Rights for Windows Server 2003 R2 Standard Edition, Enterprise Edition, and Datacenter Edition....... 3
Determining the Most Cost-Effective Edition of Windows Server....................................................... 4
Considerations for Clustering, Failing Over, and Moving Instances ................................................... 4
Client Access Licenses (CALs) and External Connectors (ECs) ....................................................... 6
Licensing for Virtualization Technologies............................................................................................ 7
Licensing for VMware ESX ........................................................................................................... 7
Licensing for VMware VMotion and Microsoft System Center Virtual Machine Manager ...................... 7
Licensing for SWsoft Virtuozzo.................................................................................................... 11
Comparing ESX Server, Virtuozzo, and Microsoft Virtual Server..................................................... 13
Additional Resources ..................................................................................................................... 14
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
1
Introduction to Licensing Virtualization Technologies
With the growing prevalence of virtualization technologies, many customers ask how they license Windows
Server products with these technologies. Although seemingly complex, licensing in this case is actually quite
simple. Before delving into licensing details and examples, however, it is useful to review some basic
licensing concepts to better understand how they apply in virtualized scenarios.
From the April 2007 Product Use Rights
(PUR):
Before you run any instance of the server
software under a software license, you
must assign that license to one of your
servers. That server is the licensed server
for that particular license. You may assign
other software licenses to the same
server, but you may not assign the same
license to more than one server. A
hardware partition or blade is considered
to be a separate server.
To run Microsoft server software on a server, you must first
assign the server a license. By assigning this license, you
are designating a server to run an instance of Microsoft
server software. In addition, you have the right to run as
many instances on that server as the software allows—
regardless of what kind of operating system environment
(OSE) is present.
There are two types of OSEs: physical and virtual. A
physical OSE is configured to run directly on a physical
hardware system and can be physical and/or virtual. A
virtual OSE is configured to run on a virtual—or otherwise
emulated—hardware system. This distinction is vital to
understanding how to license virtualization technologies;
regardless of the type, each instance running requires a
license.
To better understand the difference between physical and virtual
OSEs, consider the following: Windows Server 2003 R2 Standard
Edition permits one running instance at a time, while Enterprise
Edition permits up to five—one instance running in a physical
operating system environment and four instances running in a
virtual OSE. If you choose to run five instances at a time under the
Enterprise Edition license, the instance of the software running in
the physical OSE may only be used to run hardware virtualization
software and software to manage and service OSEs on the licensed
server.
Please note that you need separate licenses for OSEs that include
all or part of an operating system or that include all or part of a
virtual instance and enable separate machine identity or separate
administrative rights.
From the April 2007
Product Use Rights:
An “operating system
environment” is:
i. All or part of an operating
system instance, or all or part
of a virtual (or otherwise
emulated) operating system
instance that enables
separate machine identity
(primary computer name or
similar unique identifier) or
separate administrative
rights; and
ii. Instances of applications, if
any, configured to run on the
operating system instance or
parts identified above.
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
2
Understanding Virtualization Rights
The first step to understanding how to license virtualization technologies is to determine which Windows
Server edition is right for your organization based on how many physical and virtual OSEs you need. In this
section, we describe the number of OSEs each edition permits and the benefits of each. We also list other
licensing considerations you may take into account.
Rights for Windows Server 2003 R2 Standard Edition, Enterprise Edition, and Datacenter
Edition
When licensing Windows Server products, you should carefully consider the server’s peak capacity because
it must have licenses equal to or exceeding the number of running instances. For example, if you have one
Windows Server 2003 R2 Standard Edition license assigned to a server, the server may not run a second
instance of the software at the same time. If, for any reason, you need to run a second instance, you must
assign the server a second license.
The following outlines the maximum number of running instances each Windows Server 2003 R2 edition
permits:
Product
Maximum Permitted Running
Instances in a Virtual OSE per
License
Application in Virtualized
Environments
Windows Server 2003
R2 Standard Edition
One*
A single Standard Edition license server
permits you to run one instance of the
software in either a physical or virtual
OSE on that server. You need to assign a
Standard Edition license for each running
instance (in which case you may want to
choose a higher level edition).
Windows Server 2003
R2 Enterprise Edition
Four
Windows Server 2003
R2 Datacenter Edition
Unlimited
Windows Server 2003
Web Edition
One*
An Enterprise Edition license grants the
right to run one Enterprise server in one
physical OSE and up to four simultaneous
virtual OSEs. If you run all five permitted
instances at the same time, the instance
of the server software running in the
physical OSE may only be used to run
hardware virtualization software and
software to manage and service the
OSEs on the server.
When Datacenter Edition is licensed for
every physical processor in a server, the
server may run in both the physical OSE
and in an unlimited number of Windows
Server instances in virtual OSEs.
A single Web Edition license server
permits you to run one instance of the
software in either a physical or virtual
OSE on that server. You need to assign a
Web Edition license for each running
instance (in which case you may want to
choose a higher level edition).
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
3
Determining the Most Cost-Effective Edition of Windows Server
The most cost-effective edition of Windows Server for your specific virtualization needs depends on the
number of instances per processor that can run on the server. (Please note that Enterprise Edition and
Datacenter Edition may offer the ability to add instances, along with offering clustering and other
functionality not available in Standard Edition).

Standard Edition is the most cost-effective if you want to run up to three simultaneous instances in
a virtual OSE on the server.

Enterprise Edition is the most cost-effective if you want to run four simultaneous instances in a
virtual OSE per processor. Enterprise Edition is licensed by server—not per processor. But more
than one Enterprise Edition license may be assigned to a server to have the rights to run more than
four instances of Windows Server. For example, one license for Enterprise Edition for a oneprocessor server running four instances of Windows Server in a virtual OSE is slightly less
expensive than one Datacenter Edition processor license. And two licenses for Enterprise Edition
for a two-processor server running eight instances of Windows Server in a virtual OSE is slightly
less expensive than two-processor licenses for Datacenter Edition.

Datacenter Edition is most cost-effective for running more than four instances per processor. At
four instances per processor, Datacenter Edition is slightly more expensive than Enterprise Edition,
but provides room to add instances in a virtual OSE on the server at no additional cost.
Figure 1: The Windows Server Virtualization Calculator is a tool that can help you determine the number of Windows Server licenses and
estimated cost by edition for your virtualization scenarios to find the most cost-effective edition. It is available at:
http://www.microsoft.com/windowsserver2003/howtobuy/licensing/calculator.mspx.1
Considerations for Clustering, Failing Over, and Moving Instances
Higher availability and dynamic datacenters often need to run the same workload on two servers
simultaneously or run a workload on a primary server, but periodically move it to a second server in the case
of failure, load balancing, patching, or planned downtime.
In both scenarios, regardless of whether the workloads are running in physical or virtual OSEs, each server
must have the appropriate number of licenses assigned to it prior to it being used to run workload,
regardless of whether you plan to:

Always run on a single server.

Run in parallel on the server as a backup when the primary server fails.

Run the workload if the primary server is down.

Load balance when the primary server has high use.

Only run the workload during maintenance.
1
The illustration is based on Open Agreement Estimated Retail Prices in the United States and compares the license requirements and
estimated cost for instances of Windows Server running in virtual OSEs in four server configurations. The prices in the examples are in U.S.
dollars and represent an estimated retail price on March 1, 2007 for Open Business Agreements. The prices shown do not include any
applicable taxes. Any amounts should not be considered as a commercial proposal or offer from Microsoft. Microsoft provides this material
solely for informational purposes and actual prices and payment terms may vary.
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
4
Figures 2, 3, and 4 demonstrate three examples that are properly licensed.
WS
Clustered
Physical
Servers
WS
WS License
WS License
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Figure 2: The servers are clustered, each licensed with Windows Server (WS) and both running the same workload in parallel.
WS
.VHD
Clustered
Virtualized
Servers
WS
.VHD
WS License
WS License
~~~~~~~~~
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Figure 3: The servers are clustered, each licensed with Windows Server (WS) and both running the same virtualized workload in parallel.
Fail over or
Migrate VM
WS
.VHD
WS
.VHD
WS License
WS License
~~~~~~~~~
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Figure 4: Both servers are licensed with Windows Server (WS). The workload is moved from the first server to the second server.
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
5
Client Access Licenses (CALs) and External Connectors (ECs)
Most Microsoft servers require Client Access Licenses (CALs) and have an optional external connector
(EC). The CAL and EC requirements are the same for both physical and virtual OSEs. CALs are required for
each device or user that accesses an instance of server software directly or indirectly. You do not need
CALs for up to two devices or users to access your instances as long as they are only administering them.
In addition, Windows Server 2003 R2 Standard Edition, Enterprise Edition, and Datacenter Edition do not
require CALs or ECs for users or devices that access your software instances through the Internet without
being authenticated or otherwise individually identified through any means. CALs and ECs cannot be
reassigned on a short-term basis.
Users and devices licensed with a CAL can access any instances (physical and virtual) running on any
physical server. Outside of the exceptions above, each physical server that requires external user access
must be assigned an EC. Each EC permits external users to access any instance running on a server
whether it be in a physical or virtual OSE. You do not need additional ECs for each virtual instance on a
physical server.
Please note that multiplexing hardware, software, or connections does not reduce the number of CALs
required to access servers.
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
6
Licensing for Virtualization Technologies
Once you understand how to license Windows Server products according to how many instances you need
to run, you can learn about the specific licensing requirements of various virtualization technologies. In
addition to providing specific details and scenarios for each, we also compare overall licensing costs.
Licensing for VMware ESX
If a server is running VMware ESX as a virtualization technology, Windows Server is not deployed as a host
operating system in the physical OSE. However, a license is still required for every instance running in a
virtual OSE.
If you have assigned a single license of Windows Server Standard Edition to the server running ESX, then
you may run one instance at a time of Windows Server Standard Edition. If you have assigned a single
license of Windows Server Enterprise Edition to the server running ESX, then you may run up to four
instances at a time of Windows Server. You may not run a fifth instance under the same Enterprise Edition
license because that right requires that the fifth instance be running hardware virtualization software and
software managing and servicing the OSEs on the server. However, Datacenter Edition permits unlimited
running of instances in virtual OSEs.
Licensing for VMware VMotion and Microsoft System
Center Virtual Machine Manager
From the April 2007 PUR:
VMotion, System Center Virtual Machine Manager, and Windows
Server Clustering all move instances of virtual OSEs between
physical servers. However, the licenses remain with the physical
server to which they are assigned. When an instance is moved to
a new physical server, the new server must have the appropriate
licenses.
You may reassign a software license, but
not on a short-term basis (i.e., not within
90 days of the last assignment). You may
reassign a software license sooner if you
retire the licensed server due to
permanent hardware failure. If you
reassign a license, the server to which you
reassign the license becomes the new
licensed server for that license.
With a few exceptions, described in the box to the side regarding
PUR, software licenses may only be reassigned to new hardware
after 90 days. However, the dynamic movement of virtual OSEs
between licensed servers is not restricted in any way. As long as
the servers are licensed—and are not running more instances
simultaneously—you are free to use VMotion and System Center
Virtual Machine Manager to move virtualized instances between
licensed servers at will.
Reassignment of License
Server Repartitioning (Windows Server
Datacenter Edition). You may reassign
licenses sooner than permitted above,
when you:
 Reallocate processors from one
licensed hardware partition to another.
 Create two or more partitions from
one licensed hardware partition.
 Create one partition from two or more
licensed hardware partitions.
These exceptions are in effect as long as:
i. Each hardware partition is fully licensed
prior to repartitioning; and
ii. The total number of licenses and
processors remains the same.
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
7
X
WS
.VHD
X
B
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
A
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
4 Licenses
4 Licenses
WS License
WS License
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
Figure 5: If each server has four licenses for Windows Server 2003 R2 Standard Edition and the second server is already running three
instances of Windows Server 2003 R2 Standard Edition in a virtual OSE, then VMotion or System Center Virtual Machine Manager
(Windows Server Clustering Services, scripting, or manual administration) may move one (Example A) instance of Standard Edition from
the first server to the second server. But it may not move a second instance (Example B above), because moving the second instance
would cause the second server to become underlicensed.
The following scenarios demonstrate how to properly license three dual-processor servers to use with
VMotion and System Center Virtual Machine Manager to move instances between the three servers. The
first scenario (Figure 6) shows the “standard” running state of the three servers where the three servers are
each licensed with four licenses of Windows Server 2003 R2 Standard Edition and are running four
instances of Windows Server 2003 R2 Standard Edition in a virtual OSE.
The second, third, and fourth scenarios (Figures 7, 8, and 9) show the VMotion or System Center Virtual
Machine Manager moving two instances from the first server to the second server and the remaining two
instances to the third server. In the second scenario (Figure 7), the second and third servers are underlicensed. The third and fourth scenarios (Figures 8 and 9) show two options to properly license the migration
of instances of Windows Server.
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
8
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
4 Licenses
4 Licenses
4 Licenses
WS License
WS License
WS License
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
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Figure 6: The three servers are properly licensed to run four instances of Windows Server, because they are each licensed with four
licenses of Windows Server 2003 R2 Standard Edition.
X X
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
X X
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
4 Licenses
4 Licenses
4 Licenses
WS License
WS License
WS License
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
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Figure 7: The instances of Windows Server running in a virtual OSE may not be moved from the first server to the second or third server,
because the second and third servers are each licensed with four instances of Windows Server and are already running four instances of
Windows Server before the attempted migration.
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
9
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
4 Licenses
6 Licenses
6 Licenses
WS License
WS License
WS License
~~~~~~~~~
~~~~~~~~~
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Figure 8: Two of the instances of Windows Server may be moved from the first server to the second, and the remaining two instances may
be moved from the first server to the third; the second and third servers each have six licenses and were only running four instances of
Windows Server prior to the migration.
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
10
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
WS
.VHD
2 WS
Datacenter
Licenses
2 WS
Datacenter
Licenses
2 WS
Datacenter
Licenses
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
Figure 9: Instead of licensing the servers with enough Windows Server 2003 R2 Standard Edition licenses to meet the largest number of
simultaneously running instances of Windows Server, the processors in the servers could be licensed with Windows Server 2003 R2
Datacenter Edition to allow an unlimited number of instances of Windows Server to run simultaneously in virtual OSEs. Because each
server has two processors, two Windows Server 2003 R2 Datacenter Edition licenses are required for each server. Windows Server 2003
R2 Datacenter Edition licensing provides the flexibility to move instances of Windows Server without concern about maintaining license
compliance.
Licensing for SWsoft Virtuozzo
On a single physical server, SWsoft Virtuozzo software creates running instances of Windows Server in
virtual OSEs that run on top of Windows Server. These running instances—also referred to as a “silo,”
“isolated partition,” or “VE” (Virtualized Environment)—act as the host operating system. They share the
same kernel of the host Windows Server operating system, but have isolated registry settings, operating
system libraries, operating system processes, and application software. These virtual OSEs also enable
separate machine identity or administration rights.
As with other virtualization technologies, each physical and virtual running instance of Windows Server
requires a Windows Server license. But because every instance shares the same kernel as the host
operating system, Virtuozzo is technically unable to run more than one edition of Windows Server on the
physical server. As a result, you must choose a single edition when using Virtuozzo for both physical and
virtual OSEs.
Furthermore, all instances are exposed to all physical processors in the server. For example, the instances
on a two-processor server would each have two virtual processors, and the instances on a four-processor
server would each have four virtual processors. This distinction is important for Microsoft server applications
that are licensed on a “per processor” licensing model, such as Microsoft SQL Server™ 2005 and Microsoft
BizTalk™ Server 2006. Finally, it is important to note that because Virtuozzo instances share the same
kernel, you cannot take advantage of “downgrade” rights.
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
11
BizTalk
WS
BizTalk
WS
BizTalk
WS
Virtuozzo
Windows Server
Proc
Proc
4 WS
Licenses
6 BizTalk
Licenses
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
Figure 10: With Virtuozzo, a two-processor server with three running instances of BizTalk Server in virtual OSEs must have six processor
BizTalk Server licenses.
BizTalk
WS
BizTalk
WS
BizTalk
WS
Virtuozzo
Windows Server
Proc
Proc
4 WS
Licenses
2 SQL EE
Licenses
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
~~~~~~~~~
Figure 11: A two-processor server with three instances of BizTalk 2006 Enterprise Edition running in virtual OSEs only needs two processor
licenses of BizTalk Enterprise Edition due to the unlimited virtualization rights of BizTalk Enterprise Edition when the physical processors
are licensed.
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
12
Comparing ESX Server, Virtuozzo, and Microsoft Virtual Server
To demonstrate the number and estimated cost of Windows Server licenses with ESX, Virtuozzo, and virtual
Server, we have compiled a chart showing different licensing options.2
Windows Server 2003 R2 Standard Edition
Running
Instances of
Physical
Windows
Scenario
Processors in Server in a
Number
the Server
Virtual OSE
1
2
4
2
2
8
3
2
10
4
2
20
Windows Server 2003 R2 Enterprise Edition
Running
Instances of
Physical
Windows
Scenario
Processors
Server in a
Number
in the Server Virtual OSE
1
2
4
2
2
8
3
2
10
4
2
20
5
4
20
Windows Server 2003 R2 Datacenter Edition
Running
Physical
Instances of
Scenario
Processors
Windows
Number
in the Server Server in a
Virtual OSE
1
2
4
2
2
8
3
2
10
4
2
20
5
4
20
Windows Server 2003 R2 Standard Edition Licenses /
Estimated Cost
VMware ESX
4 / $2,876
8 / $5,752
10 / $7,190
20 / $14,380
SWsoft Virtuozzo
5 / $3,595
9 / $6,471
11 / $7,909
21 / $15,099
Microsoft Virtual
Server
5 / $3,595
9 / $6,471
11 / $7,909
21 / $15,099
Windows Server 2003 R2 Enterprise Edition Licenses /
Estimated Cost
VMware ESX
1 / $2,334
2 / $4,668
3 / $7,002
5 / $11,670
5 / $11,670
SWsoft Virtuozzo
1 / $2,334
2 / $4,668
3 / $7,002
5 / $11,670
5 / $11,670
Microsoft Virtual
Server
1 / $2,334
2 / $4,668
3 / $7,002
5 / $11,670
5 / $11,670
Windows Server 2003 R2 Datacenter Edition Licenses /
Estimated Cost
VMware ESX
SWsoft Virtuozzo
Microsoft Virtual
Server
2 / $4,762
2 / $4,762
2 / $4,762
2 / $4,762
4 / $9,524
2 / $4,762
2 / $4,762
2 / $4,762
2 / $4,762
4 / $9,524
2 / $4,762
2 / $4,762
2 / $4,762
2 / $4,762
4 / $9,524
To create additional scenarios, please visit the Windows Server Virtualization Calculator tool at:
http://www.microsoft.com/windowsserver2003/howtobuy/licensing/calculator.mspx.
2
The prices in the examples are based on Open Agreement Estimated Retail Prices in the United States
and are shown in U.S. dollars. Prices shown do not include any applicable taxes, or the cost of ESX or
Virtuozzo. Any amounts should not be considered as a commercial proposal or offer from Microsoft.
Microsoft provides this material solely for informational purposes and actual prices and payment terms may
vary.
© 2007 Microsoft Corporation. All rights reserved.
Microsoft, BizTalk, and Windows Server are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries. Actual license prices and payment terms may vary. Prices for licenses acquired
through Microsoft resellers are determined by the reseller.
13
Please note that to determine the total number of Windows Server 2003 R2 Standard Edition licenses
needed for Virtuozzo and Virtual Server, you should add one license of Windows Server 2003 R2 Standard
Edition for the host operating system.
Additional Resources
Microsoft Virtualization Solutions:
http://www.microsoft.com/windowsserversystem/virtualization/default.mspx
Volume Licensing Briefs:

Licensing Microsoft Server Products with Virtual Machine Technologies (Brief):
http://download.microsoft.com/download/6/8/9/68964284-864d-4a6d-aed9f2c1f8f23e14/virtualization_brief.doc

Licensing Microsoft Server Products with Virtual Machine Technologies (White Paper):
http://download.microsoft.com/download/6/8/9/68964284-864d-4a6d-aed9f2c1f8f23e14/virtualization_whitepaper.doc

Multicore and Hyperthreading Processor Licensing:
http://download.microsoft.com/download/f/1/e/f1ecd771-cf97-4d98-9a1bb86e3f24e08f/multicore_hyperthread_brief.doc

Step-up Licenses: http://download.microsoft.com/download/a/6/9/a69a4aa0-717a-4f73-bbcd9d7451fddbbc/stepup_license_v4.doc
Volume Licensing Glossary: http://www.microsoft.com/licensing/resources/glossary.mspx
Volume Licensing Product Use Rights: http://www.microsoftvolumelicensing.com/userights/PUR.aspx
Windows Server Virtualization Calculator:
http://www.microsoft.com/windowsserver2003/howtobuy/licensing/calculator.mspx
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