Installation Guide

3. Setting Up Windows Server 2008 R2
Express5800/R120d-1E, R120d-2E Installation Guide (Windows)
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Chapter 1 Installing Windows
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Setup Items to confirm
License authentication is required depending on the installation of Windows.
For details, refer to 3.8 License Authentication.
Note
 Activate within 30 days following installation.
 A virtual product key is used when installing in a virtual
environment. It is not used when directly installing an operating
system to a physical server.
―
License
authentication