
18
The following table lists the number of instances per license that you can run at the same time in a virtual operating
system environment within a physical server.
Windows Server 2008 Virtual operating system environment instances
Standard 1
Enterprise 4
Datacenter Any number
Itanium
®
Any number
48. Can I downgrade Windows Small Business Server 2011 to Small Business Server 2008 or 2003?
As noted on Microsoft’s Windows Small Business Server 2011 licensing site, a downgrade from Small Business
Server 2011 to Small Business Server 2003 is not supported. If the customer wants Small Business Server and
needs to run an application that’s only supported on Windows Server 2003 R2, then:
• If the server is already running the application, the customer should leave that server alone and add a Small
Business Server 2011 server. If AD is running on the Windows Server 2003 R2 server, then the customer may
want to transfer the AD settings to Small Business Server 2011. The Small Business Server 2011docs include a
section on migrating from Small Business Server 2003 to Small Business Server 2011, which covers how to
migrate a Windows Server 2003 R2 AD domain to Small Business Server 2011.
• If the application is not already running, then the customer should run the application under Windows Server
2003 R2 in a virtual machine (VM), either on a second server or on the Small Business Server (with Small Business
Server also running in a VM). It is best that the customer get a VAR’s advice on how to do this.
For the customer who wishes to downgrade from Small Business Server 2011 to Small Business Server 2008:
• There is no fulfillment process for FPP or OEM Small Business Server 2011 customers to obtain downgrade
media/keys for Small Business Server 2008.
• Open License Small Business Server 2011 customers may obtain downgrade Small Business Server 2008.
media/keys via the Microsoft Volume Licensing Service Center (VLSC).
An FPP or OEM Small Business Server 2011 customer may reuse the software and key from a previously purchased
Small Business Server 2008 license under downgrade rights for a newly purchased Small Business Server 2011
license. Whenever reusing previously purchased software/key to fulfill downgrade rights for a new license, the
customer will be prompted to phone a Microsoft Activation Center. Once the customer explains that the
software/key is being reused under downgrade rights for a new license, the Microsoft Activation Center will provide
the customer with an activation code.
Here are the most common Small Business Server downgrade scenarios:
• Replace/Upgrade a Small Business Server 2008 server: in this case, the customer should continue using Small
Business Server 2008, but needs to upgrade or replace the server it’s running on. The customer should buy a
Small Business Server 2011 license with the new server. If Small Business Server 2011 was licensed via FPP or
OEM, then the customer would reuse the existing Small Business Server 2008 media/key to install it on the new
server, activating it via phone as described above. The Small Business Server 2008 documentation explains how
to migrate to Small Business Server 2008 from Small Business Server 2008.
• A new Small Business Server customer needs to run an ISV application on the Small Business Server, but the
application is currently only supported on Windows Server 2008, not Windows Server 2008 R2. Such customers
should purchase Open License Small Business Server 2011 and obtain downgrade Small Business Server media
and a key via VLSC.
49. Can I downgrade from Small Business Server 2011 Standard Edition to Small Business Server 2008 Standard
Edition?
• Yes. You are eligible to downgrade from Small Business Server 2011 Standard Edition to Small Business Server
2008 Standard Edition. Customers need to obtain genuine Windows Small Business Server 2008 Standard Edition
media and a corresponding product key.
• The media should come from a prior, legally licensed version and have been obtained from the OEM or
retail channels.
• Additionally, end users who are licensed separately through Microsoft Volume Licensing programs may use their
VL media and product key.
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