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Product Description   
Windows Server 2019 Datacenter - Additional 16-Core Add-On License

This edition is designed for highly virtualized data center and cloud environments. This uses a Core-based licensing model & requires the purchase of WS CALs.

Why Data center Edition?
 Deliver enhancements to core Windows Server functionality.
 Enable developers to create cloud native apps and modernize traditional apps using containers and micro-services.
 Increase security and reduce business risk with multiple layers of protection built into the operating system.
 Continues to enable high density virtualization.
 Adds advanced software-defined data center capabilities.
 Adds advanced software-defined storage capabilities.

Datacenter Key Features:
 Core Windows Server Functionality.
 Hybrid integration.
 Hyper-converged infrastructure.
 Unlimited OSEs/Hyper-V Containers.
 Unlimited Windows Server Containers.
 Host Guardian Service.
 Unlimited Storage Replica.
 Shielded Virtual Machines.
 Software defined networking.
 Software defined storage.

Datacenter and Standard Edition per-Core Licensing
Windows Server 2019 Datacenter and Standard editions are licensed by physical core. Licenses are sold in 2-packs and 16-packs.

Minimum License Requirements:

 All physical cores must be licensed.
 8 core licenses per processor.
 16 core licenses per server.

This product includes a single (1) license authorizing an additional 16-Cores on a single (1) server, and is intended to be used in addition to a 16-Core or 24-Core License+Media Package, and any combination of 2, 4, & 16 additional core licenses to match the core-count of your server. All Physical Cores in your server must be licensed.

CAL (Client Access Licenses) are not included with this product, and must be purchased separately to use this server software. These are available in 1 or 5 user Packs, or alternatively in 1 or 5 Device Packs, allowing you the flexibility to choose the number & type of CAL packs to suit your business or organization's needs.

Installation Media is not included with this product.


Unique Hybrid Capabilities with Azure
Extend your data center to Azure to maximize existing investments and gain new hybrid capabilities. The move to the cloud is a journey and often takes a hybrid approach, one that combines on-premises and cloud environments. With its hybrid cloud capabilities, Microsoft takes a future-proof, long-term approach—which is exactly why we see it playing a central role in cloud strategies for the foreseeable future. With Windows Server 2019, you will be able to easily integrate a comprehensive set of Azure services, such as Azure Backup, Azure File Sync, disaster recovery, and much more, without disrupting your applications and infrastructure.

Fully Supports:
Storage Migration Service: Helps to inventory and migrate data, security, and configurations from legacy systems to Windows Server 2019 and/or Azure.
 Synchronizing File Servers to Azure: Centralize your organization's file shares in Azure Files while keeping the flexibility, performance, and compatibility of an on-premises file server.
 System Insights: Brings local predictive analytics capabilities native to Windows Server. These predictive capabilities, each backed by a machine-learning model, locally analyze Windows Server system data to provide high-accuracy predictions that help reduce the operational expenses associated with re-actively managing Windows Server instances.
 Azure Network Adaptor: Easily connects to Azure virtual networks. Windows Admin Center performs the heavy lifting of configuring the VPN to a new network adapter that will connect Windows Server 2019 to a point-to-site Azure virtual network VPN.
 Enhanced Azure AD Authentication: Windows Server 2019 can join Azure Active Directory (Azure AD), enabling new scenarios in which the computer account can be used for authentication in the cloud.
 VM Protection: Replicates workloads running on physical and virtual machines (VMs) from a primary site to a secondary location.

Unprecedented Hyper-Converged Infrastructure
Evolve your data center infrastructure to achieve greater efficiency and security. HCI is one of the latest trends in the server industry. According to IDC, the HCI market grew by 64% in 2016, and Gartner predicts that it will be a $5 billion market by 2019. With its HCI capabilities, Microsoft consolidates software-defined computing, storage, and networking into one cluster to provide high-performance, cost-effective, easily scalable virtualization. Microsoft partnered with industry-leading hardware vendors to provide an affordable yet extremely robust HCI solution with validated design. In Windows Server 2019, Microsoft is building on this platform by adding scale, performance, and reliability, as well as the ability to manage HCI deployments to simplify management and day-to-day activities.

Fully Supports:
 Unified Management: Windows Admin Center is an elegant browser-based HCI remote management interface that includes software-defined network configuration and monitoring.
 Storage Spaces: Protect your data from drive failures and extend storage over time as you add drives to your servers.
 Enhanced Storage Spaces Direct (S2D): Build software-defined storage using industry standard servers with local storage that can scale up to 1PB per storage pool in Windows Server 2016 and 4PB per storage pool and 64TB per volume in Windows Server 2019.
 Mirror-Accelerated Parity: Lets you create volumes that are part mirror and part parity for 2x better performance on storage spaces direct deployments. Writes land first in the mirrored portion and are gradually moved into the parity portion.
 Nested Mirror Accelerated Parity: Enables two-node clusters at the edge to survive multiple simultaneous failures.
 Storage Class Memory: Support for new generation of server hardware including storage class memory, which drastically improves performance for server applications.
 USB Thumb Drive (as Cluster Witness): Support for USB thumb drive as cluster witness allows true 2 node HCI deployments, with no additional dependencies.
 Storage Replica: Provides storage-agnostic, block-level, and asynchronous and synchronous replication between servers for disaster recovery, and allows stretching of a fail over cluster for high availability.
 Storage Quality of Service (QoS): Uses policies to define and monitor storage input/output minimums and maximums for VMs to enable consistent performance across VMs.
Data De duplication: Provides volume savings of up to 90% by storing duplicate files on a volume once using logical pointers. Windows Server 2019 add support for de duplication with ReFS volumes.
 De duplication for ReFS: Data de duplication is now supported on ReFS to optimize free space on a volume by examining the data for duplicated portions.
 Virtual Machine Storage Resiliency: Provides intelligent means to retain VM session states to minimize the impact of minor storage disruptions.
 Cloud Witness: Enables Azure blob storage as a witness in a quorum for a stretched cluster. Additionally, in Windows Server 2019 you can now create a file share witness that does not utilize the Cluster Name Object (CNO), but simply uses a local user account on the server the FSW is connected to.
 Storage Health Monitoring: Provides continuous monitoring, reporting, and maintenance to support storage spaces directly.
 Cluster-Wide Monitoring: Monitors memory and CPU usage, storage capacity, IOPS, throughput, and latency in real time with clear alerts when something's not right.
 Cluster Sets: Allows you to create large scale-out clusters with greater flexibility (deploying and retiring clusters) without sacrificing resiliency.
 Cluster OS Rolling Upgrade: Enables an administrator to seamlessly upgrade the operating system of nodes in a fail over cluster from Windows Server 2012 R2 and Windows Server 2016 to Windows Server 2019.
 Mixed OS Mode Cluster: Enables Windows Server 2012 R2 cluster nodes to operate with Windows Server 2016 nodes.
 Site-Aware Fail over Clusters: Groups nodes in stretched clusters based on physical location, enhancing key cluster-lifecycle operations such as fail over, placement policies, heart-beating between nodes, and quorum behavior.
 Kernel Soft Reboot: Provides WSSD-validated hardware faster reboot time, reducing application downtime.
 Persistent Memory: Support for persistent memory (PM) technology provides byte-level access to non-volatile media while also reducing the latency of storing or retrieving data significantly.
 Linux and FreeBSD Workloads: Enables most of the Windows Server software-defined data center features for Linux and FreeBSD guests running on Hyper-V for increased functionality, performance, and manageability.
 Hot Add and Remove for Disk, Memory, and Network: Add or remove a network adapter and adjust the amount of memory assigned while the VM is running, without any interruption. The memory adjustment capability works even when you have dynamic memory turned on for a Hyper-V host.
 Network Controller: Provides a centralized, programmable point of automation to manage, configure, monitor, and troubleshoot virtualized network infrastructure in your data center.
 Virtual Networking: Helps create network overlays on top of a shared multi-tenant physical fabric.
 Software Load Ba-lancer (SLB): A cloud-optimized Layer 3 and Layer 4 load balancer that provides both North-South and East-West load balancing.
 Virtual Network Peering: Provides high speed connectivity between two virtual networks. Traffic between the virtual networks goes through the underlying fabric network with no gateway. Both virtual networks must be part of the same data center stamp.
 Distributed Firewall and Micro-Segmentation: Dynamically segment networks based on evolving security or application needs using a state ful firewall and network security groups.
 Hybrid SDN Gateways: Multi-tenanted, highly available gateways that connect customer virtual networks to Azure, other Windows Server-powered clouds, high speed WANs, and local non-virtualized resources.
 Improved SDN Gateway: Improvements up to 3x for GRE tunnels and IPSec site-to-site VPN.
 Converged RDMA: Converge RDMA storage traffic and tenant Ethernet traffic on the same underlying NIC team for significant cost savings, while also getting the desired throughput and quality of service.
 Precision Time Protocol (PTP): PTP enables network devices to add the latency introduced by each network device into the timing measurements, thereby providing a far more accurate time sample than Network Time Protocol (NTP).
 Leap Second: Support for leap seconds (occasional 1-second additions to UTC to adjust as earth’s rotation slows) increases accuracy, compliance, and traceability.
 HTTP/2: Support for HTTP/2 (RFC 7540) in the native HTTP server. Now, Windows Server 2019 delivers performance and security benefits to your website deployments with HTTP/2.
 Latency Optimized Background Transport - LEDBAT: With Windows Server 2019, we bring a latency optimized, network congestion control provider, Low Extra Delay Background Transfer (LEDBAT). LEDBAT is designed to automatically yield bandwidth to users and applications, while consuming the entire bandwidth available when the network is not in use.
 IP Address Management (IPAM) and DNS: IPAM now supports comprehensive DNS and DHCP management with role-based access control across multiple AD forests. DNS provides for traffic management, load balancing, split-brain deployments, and prevention of DNS amplification attacks.
 Multi Point Services Role: Enables low cost-per-seat by allowing multiple users to run their own sessions while connected to one machine.
 High-Availability RDS Connection Broker: helps create a fault-tolerance connection broker for Remote Desktop Services (RDS) scenarios.
 SDN with IPv4/IPv6: Software defined networking (SDN) provides a method to centrally configure and manage physical and virtual network devices. Additionally, Windows Server 2019 now supports IPv6 and dual stack IPv4/IPv6 addressing as well.

Enhanced Security Capabilities
Elevate your security posture by protecting the datacenter starting with the operating system. Security continues to be a top priority for organizations. The number of cyber-security incidents continues to grow, and the impact of these incidents is escalating quickly. Microsoft continues its journey to help customers improve their security posture. Windows Server has a three-fold approach for security—protect, detect, and respond. Windows Server 2019 gives you new and enhanced capabilities to help prevent attacks and detect suspicious activity, with features to control privileged access, help protect VMs, and harden the platform against emerging threats.

Fully Supports:
 Enhanced Windows Defender Advanced Threat Protection (ATP): Windows Defender ATP Exploit Guard is a new set of host intrusion prevention capabilities such as preventative protection, attack detection, and zero-day exploits.
 Shielded VMs for Windows: Use BitLocker to encrypt disk and state for Windows OS-based VMs.
 Shielded VMs for Linux: Windows Server 2019 supports Shielded VMs for Linux to protect Linux VMs from attacks and compromised administrators in the underlying fabric and extensive threat resistance components.
HGS Offline Mode for Shielded VMs: Offline mode allows shielded VMs to turn on when HGS cannot be reached, if the security configuration of your Hyper-V host has not changed.
 VM Connect for Shielded VMs: Enhances the interactive session experience by providing a secure console connection while interacting with a shielded VM for Windows and Linux machines.
 Cluster Hardening: New clusters running Windows Server 2019 will not require NTLM, which completely removes the requirement of Active Directory for clusters in Windows Server.
 SDN Encrypted Sub net: Virtual network encryption provides the ability for the virtual network traffic to be encrypted between VMs that communicate with each other within subnets.
 Just-Enough Administration: Limits administrative privileges to the bare minimum required set of actions (limited in space).
 Just-In-Time Administration: Provides privileged access through a workflow that is audited and limited in time.
 Credential Guard: Uses virtualization-based security to help secure credential information against advanced persistent threats on the system and to protect it from being stolen by a compromised administrator or malware.
 Control Flow Guard: Helps protect against classes of memory corruption attacks.
 Remote Credential Guard: Works in conjunction with credential guard for Remote Desktop Protocol (RDP) sessions to deliver single sign-on (SSO), eliminating the need to pass credentials to the RDP host.
 Device Guard (Code Integrity): Helps ensure only authorized executable run on the server.
 Dynamic Access Control: Enables administrators to apply access-control permissions and restrictions based on well-defined rules.
 App Locker: Provides policy-based access control management for applications.
 Bit Locker: Uses a hardware or virtual Trusted Platform Module (TPM) chip to provide disk encryption for data and system volumes.

Faster Innovation for Applications
Enable developers and IT pros to create cloud native applications and modernize their traditional apps using containers and micro-services. Enterprises are adopting digital transformation to engage end users, offer competitive products, empower their employees, and improve operations. To drive this transformation, developers need a modern platform that helps them deliver innovation at the rate of changing business demands. Windows Server 2019 can help you modernize your apps and drive innovation faster. Windows Server 2019 gives developers and operations flexibility to use traditional and container models for application development, with prescribed solutions and artifacts in place to achieve best practices in development and operation.

Fully Supports:
 Linux Containers: Allow application admins to manage both Windows and Linux applications on the same environment, reducing the management overhead.
 Windows Server Containers: Creates an isolated application environment in which you can run an application without fear of changes due to applications or configuration.
 Server Core Base Container Image: Reduced Server Core base container image size will reduce download time and further optimize the development time and performance.
 Nano Server Base Container Image: Reduced Nano Server base container image will reduce download time and further optimize the development time and performance. For Windows Server 2016, Nano Server base container image optimization is available with Semi-Annual Channel updates. This capability comes with Windows Server 2019 out-of-the-box.
 Server Core Features on Demand: Features on Demand (FoD) significantly improve the app compatibility of Windows Server Core by including a set of binaries and packages from Windows Server with Desktop without adding any of the Windows Server Desktop GUI or Windows 10 GUI experiences.
 Kubernetes Platform Support: Kubernetes platform support with major improvements to computing, storage, and networking components.
 Group Managed Service Accounts (gMSA): Provides a single identity solution for services running on a server farm, or on systems behind network load balancer. Using a gMSA, services or service administrators do not need to manage password synchronization between service instances. In Windows Server 2019, gMSA improves the scalability and reliability of containers to access network resources.
 Windows Subsystem for Linux (WSL): Allows developers and application administrators to use tools in Linux environments alongside Command Prompt and PowerShell.
 Hyper-V Isolation: Provides a highly isolated container environment in which the host operating system cannot be affected in any way by any other running container.
 Azure Service Fabric for Windows Server: enables you to create a multi-machine Azure Service Fabric cluster in your own data center or in other public clouds.
Power Shell 5.1: Provides enhanced scripting capabilities for configuration, management, and deployment of software-defined data center components.
 Power  Shell Desired State Configuration (DSC): Provides a set of Power Shell language extensions and cmdlets to declaratively specify how you want your software environment to be configured.
 Visual Studio Code: Supports development operations such as debugging, task running, and version control to provide the tools a developer needs for a quick code-build-debug cycle.
 .NET Core: Helps create modern web apps, micro services, libraries, and console applications that run on Windows, Mac, and Linux.

Important - Please Note: Not all features are available in all editions of Windows Server 2019, please check the overview section for key differences & intended usage scenearios. Separate purchase of License CALs may be required.

Shipping & Returns – RMA

TECHMIMO promises to always deliver high quality products at competitive prices. Our mission is to gain 100% customer satisfaction. However, in rare cases if you aren't satisfied with any of our products received then you can apply for an RMA (Return Material Authorization) which is subject to our terms and conditions below. At the time of placing an order the purchaser is required and assumed to agree to these terms and conditions.


“We” or “Us” or “Our” means TECHMIMO and any authorized person acting on behalf of TECHMIMO.

“You” or “Customer “can be one of the following:

A "Business Customer" which means a customer or consumer acting on behalf of an actively trading business entity.

A "Consumer" which means an individual generally the end-consumer who is not acting on behalf of a business entity.

Non-Faulty Items Returns Policy
  • We only accept RMA requests from you who originally purchased them and cannot accept return requests from a third party on your behalf.
  • You must inform us in writing within 14days after receiving the item(s) if you wish to return all or part of the original order that are considered non-faulty. Any RMA requests for non-faulty item(s) received after this period will not be considered.
  • We only accept returned items that are in-saleable condition.
  • Saleable condition is defined as meeting the same standards as newly manufactured/sourced products and still have manufacturer’s seal fully intact and are unopened and in the original packaging with all the instructions, warnings etc. TECHMIMO reserves the right to determine salability of a product.
  • You must inform us of any faulty items in writing within 14 days from the date of item(s) received by you. In case of incomplete or damaged products, we must be informed within seven (7) days of you receiving the item. In some cases, we may consider items returned after 14 days if it can be proven that the item(s) was/were faulty when delivered and did not develop fault due to customer misuse, not following manufacturer’s instructions or damaged by the customer.
  • In case of wrong power supply or voltage being used by the customer no return is acceptable.
  • In case of incomplete/damaged goods received by the customer, the sales team will try to replace the order, however, this is subject to further stock being available. We will try our best to rectify the problem within thirty (30) days. If the problem cannot be rectified within this time-frame, then customer will post the item(s) back to the address indicated on the RMA to claim any refunds. Proof of return postage must always be kept to certify return and ensure the correct claim for shipping cost can be made.
  • No re-stocking or shipping fees will be paid by the customer in case of a successful faulty/Incomplete/Damaged item return.
  • We will normally issue a full refund to the customer within 14 days from the date the item is received at our warehouse.
Fees – Non-Faulty Items:
  • TECHMIMO will impose a £30 on product value of £150, and on above £150 value product, 25% restocking will be applied, unless the return is proven to be due to an error on our part such as we shipped the wrong part etc.
  • If the initial payment for the order was made using a credit card then a 3% fee may also apply.
  • For international orders, all import charges and/or custom fees will be charged to you where these apply. These will be communicated to you (if applicable) after we receive the RMA request.
  • All return postage (a proof of postage must be obtained and is required by us to process any refunds) will be paid by the customer.
Subject to all of the above, we will issue any refund due to the customer within 14 days from the date the item is received at our warehouse.
    Faulty Items Returns Policy
    • We only accept RMA requests from you who originally purchased them and cannot accept returns from a third party on your behalf.
    • You must inform us of any faulty items in writing within 14 days from the date of item(s) received by you. In some cases, we may consider items returned after 14 days if it can be proven that the item(s) was/were faulty when delivered and did not develop fault due to customer misuse, not following manufacturer’s instructions or damaged by the customer.
    • Upon receiving RMA for faulty item(s), our technical team will investigate and offer help via phone and/or remote access to rectify any problems. However, if the fault remains and cannot be rectified then the customer would need to post the item(s) back to us (proof of postage must be obtained and is required by us to process any refunds).
    • In case of wrong power supply or voltage is used then no return is acceptable.
    • No fees will be paid by the customer in case of a successful faulty item return.
    • We will normally issue a full refund to the customer within 14 days from the date the item is received at our warehouse.
    Procedure for Returning Products

    Products that are returned to TECHMIMO require a Return Material Authorization (RMA) which can be requested from our Customer Service department or by emailing a written request to

    The following information will be required to issue the RMA:

    1. TECHMIMO invoice number & Customer P.O. number or Delivery reference number
    2. Date of purchase
    3. Part number / description / quantity (if items were purchased in pack quantities then only full pack quantities will be accepted for return)
    4. Reason for the return.
    Shipping returns to TECHMIMO with an RMA
    • Products authorized to be returned on the RMA will be need to be posted to the return address as indicated on the RMA.
    • TECHMIMO should receive returned product(s) within 14 days after issuing the RMA. Items received after this period will void the original RMA.
    • If we are organizing the transportation of the products to be returned, instructions will be provided by Customer Service to organize collection of the products to be returned by a carrier selected by us.

    Inspection of returns at TECHMIMO

    Unless faulty, only the returned item(s) received in salable condition, will be considered for return and credit. At arrival of the return products, we will determine whether returned products are in a sell able condition.

    Products received in a non-salable condition will be handled in one of the following ways:

    • Refurbishment of the products returned – TECHMIMO will determine refurbishment costs and inform Customer Service
    • Destruction with Customer approval, including any applicable scrapping charges.
    • Return of the product to the customer, including any applicable transportation charges

    Windows Server 2019 Datacenter OEM Extra 16 Core Additional License

    Many in stock
    This edition is designed for highly virtualized datacenter and cloud environments. This uses a Core-based licensing model & requires the purchase of WS CALs.

    Product is New

    Product Condition

    A brand-new, unused, unopened and undamaged item in original retail packaging

    An item that has been previously used. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or an item that has been returned to the seller after a period of use. See the seller's listing for full details and description of any imperfections.

    Free Shipping

    Free standard shipping on orders over $99

    Estimated to be delivered on 12/01/2022 - 15/10/2022.


    We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

    When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

    Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

    Windows Server 2019 Datacenter OEM Extra 16 Core Additional License
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