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Server Operating Systems from HAPPYWARE

Discover the perfect selection of server operating systems at HAPPYWARE, tailored to meet your needs – from Windows Server to Red Hat Enterprise Linux, Suse Linux Enterprise Server, CentOS Server, and more.

Server-Betriebssysteme
Microsoft Windows Server

Microsoft Windows Server

Buy Windows Server 2025 or Windows Server Downgrade Kit

Here you will find the server operating system Windows Server, buy online now.

Microsoft Windows Server
Red Hat Enterprise Linux Server

Red Hat Enterprise Linux

Red Hat Enterprise Linux (RHEL) for enterprise use with support and training opportunities

Buy REHL 8 Server software with Standard or Premium Support

Red Hat Enterprise Linux
Suse Linux Enterprise Server

Suse Linux Enterprise Server

Suse Linux Enterprise Server ideal for enterprise customers with appropriate support and maintenance phases

The multimodal operating system Suse Linux Enterprise: stable, secure and available Linux server software.

Suse Linux Enterprise Server
Cent OS Server Software

Cent OS Server

CentOS: Community Enterprise Operating System e.g. for your web server!

Your perfect Linux server with CentOS operating system, installed by us ready to use!

Cent OS Server

Here you'll find Server Operating Systems

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  • Up to 6 years warranty
  • Individual configuration
  • Used Rack Servers
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Windows Server 2025 Datacenter - Add-On Licence for 2 cores Microsoft Windows 2025 Data Center Core Add-Ons
  • Microsoft Windows Server 2025 Datacenter
  • Add-On licence for 2 additional cores
  • 64-Bit Architecture
  • Language: German
  • Core-based
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €709.00 *
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Windows Server 2025 Standard - Add-On Licence for 16 Cores
  • Microsoft Windows Server 2025 Standard
  • Add-On licence for 16 additional cores
  • 64-Bit Architecture
  • Language: German
  • Core-based
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €1,169.00 *
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Windows Server 2025 Datacenter - Add-On Licence for 4 cores Microsoft Windows 2025 Data Center Core Add-Ons
  • Microsoft Windows Server 2025 Datacenter
  • Add-On licence for 4 additional cores
  • 64-Bit Architecture
  • Language: German
  • Core-based
  • 512 MB, recommended 16GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €1,479.00 *
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Windows Server 2025 Datacenter - Add-On Licence for 16 cores Microsoft Windows 2025 Data Center Core Add-Ons
  • Microsoft Windows Server 2025 Datacenter
  • Add-On licence for 16 additional cores
  • 64-Bit Architecture
  • Language: German
  • Core-based
  • 512 MB, recommended 16GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €5,609.00 *
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Windows Server 2025 Datacenter - License for 24 Cores OEM
  • Microsoft Windows Server 2025 Datacenter
  • Licence for 24 Cores
  • OEM, DVD, 64-Bit
  • Language: German
  • Core-based
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €8,589.00 *
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Windows Server 2025 Standard - License for 1 Device CAL UK
  • Microsoft Windows Server 2025 Standard
  • 1 Device-CAL
  • 64-Bit Architecture
  • Language: UK English
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €54.00 *
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Microsoft Windows Server 2025 Standard - License for 1 User CAL
  • Microsoft Windows Server 2025
  • 1 User-CAL
  • 64-Bit Architecture
  • Language: UK English
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €64.00 *
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Windows Server 2025 Standard - Add-On Licence for 2 Cores Microsoft Windows Server 2025 Standard Core Add-on
  • Microsoft Windows Server 2025 Standard
  • Add-On licence for 2 additional cores
  • 64-Bit Architecture
  • Core-based
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €139.00 *
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Windows Server 2025 Standard - Add-On Licence for 2 Cores Microsoft Windows Server 2025 Standard Core Add-on
  • Microsoft Windows Server 2025 Standard
  • Add-On licence for 2 additional cores
  • 64-Bit Architecture
  • Language: UK English
  • Core-based
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €159.00 *
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Windows Server 2025 Standard - License for 5 Device CALs UK
  • Microsoft Windows Server 2025 Standard
  • 5 Device-CALs
  • 64-Bit Architecture
  • Language: UK English
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €209.00 *
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Windows Server 2025 Standard - Add-On Licence for 4 Cores Microsoft Windows Server 2025 Standard Core Add-on
  • Microsoft Windows Server 2025 Standard
  • Add-On licence for 4 additional cores
  • 64-Bit Architecture
  • Language: UK English
  • Core-based
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €269.00 *
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Windows Server 2025 Standard - Add-On Licence for 4 Cores Microsoft Windows Server 2025 Standard Core Add-on
  • Microsoft Windows Server 2025 Standard
  • Add-On licence for 4 additional cores
  • 64-Bit Architecture
  • Language: German
  • Core-based
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €299.00 *
long delivery time
Details
long delivery time
Windows Server 2025 Standard - Add-On Licence for 4 Cores Microsoft Windows Server 2025 Standard Core Add-on
  • Microsoft Windows Server 2025 Standard
  • Add-On licence for 4 additional cores
  • 64-Bit Architecture
  • Language: UK English
  • Core-based
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €299.00 *
long delivery time
Details
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Windows Server 2025 - Licence for 10 Device CALs OEM Microsoft Windows Server 2025 Device CALs
  • Microsoft Windows Server 2025
  • 10 Device-CALs
  • 64-Bit Architecture
  • Language: Multilingual
  • 512 MB, recommended 16GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €359.00 *
long delivery time
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Windows Server 2025 Datacenter - Add-On Licence for 2 cores Microsoft Windows 2025 Data Center Core Add-Ons
  • Microsoft Windows Server 2025 Datacenter
  • Add-On licence for 2 additional cores
  • 64-Bit Architecture
  • Language: UK English
  • Core-based
  • 512 MB, recommended 4GB RAM
  • 1.4 GHz Min Processor, 32GB of available disk storage
From €749.00 *
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