Microsoft

Microsoft P73-05966 Windows Server Standard 2012 R2 5-CLT

Name: Microsoft P73-05966 Windows Server Standard 2012 R2 5-CLT
Brand: Microsoft
SKU: P73-05966

Windows Server 2012 R2 Standard with 5 CALs delivers enterprise-grade infrastructure management at a cost-effective price point.

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Overview

Microsoft Windows Server Standard 2012 R2 (P73-05966) is an enterprise-class server operating system designed to support small-to-midsize business infrastructure. This edition bundles five Client Access Licenses, allowing a limited number of users or devices to connect to the server out of the box. Built on a 64-bit architecture, it delivers core server roles including Active Directory, DNS, DHCP, file and print services, and Hyper-V virtualization with support for up to two virtual instances on a single physical host.

The platform emphasizes streamlined IT service delivery with features such as Server Manager for centralized role management, PowerShell for automation, and integration with Windows Azure for hybrid cloud scenarios. While it was a highly capable release at launch, organizations should note that both mainstream and extended support from Microsoft have ended, meaning no new security updates are provided. This makes it best suited for isolated or non-internet-facing workloads, lab environments, or situations where upgrading to a newer server OS is not yet feasible.

Key Features

Enterprise-class

Simple and cost-effective

Application focused

User-centric

Specifications

Brand

Microsoft

Model

P73-05966

Edition

Windows Server Standard 2012 R2

Architecture

64-Bit

Language

English

License

5 Client Access Licenses (CALs)

Media

DVD

Pros & Cons

👍 Pros

Includes five CALs in the box, reducing initial licensing costs
Supports Hyper-V with two virtual OS instances on Standard edition
Mature and stable platform with well-documented management tools
Supports cloud integration with Windows Azure for hybrid deployments
64-bit architecture allows addressing of up to 4 TB of RAM

👎 Cons

End of mainstream support has passed, with extended support also ended in October 2023
Limited to two Hyper-V virtual instances compared to unlimited on Datacenter edition
Five included CALs may not be enough for growing organizations, requiring additional purchases
Does not support newer security features available in Server 2016 and later editions

Frequently Asked Questions

What does the 5-Client Access License (5-CAL) include?

This edition includes five Client Access Licenses, meaning up to five users or devices can legally access the server's services. Additional CALs must be purchased separately if more users need access.

Is this a full license or an upgrade?

This is a full OEM license for Windows Server Standard 2012 R2, delivered on DVD media with a product key for a fresh installation.

Does Windows Server 2012 R2 support Hyper-V virtualization?

Yes, the Standard edition includes Hyper-V and allows up to two virtual instances of Windows Server on a single licensed physical server.

What is the maximum amount of RAM supported by this edition?

Windows Server 2012 R2 Standard supports up to 4 TB of RAM, making it suitable for memory-intensive server workloads.

Is this a 32-bit or 64-bit operating system?

This is a 64-bit only operating system. There is no 32-bit version of Windows Server 2012 R2.