Azure Stack HCI and Hyper-V are two popular solutions for virtualization and cloud computing. Azure Stack HCI is a hybrid cloud platform that combines the benefits of on-premises infrastructure with the scalability of the cloud.
Azure Stack HCI is designed to support a wide range of workloads, from virtual desktop infrastructure to containerized applications. It's a great choice for organizations that need a flexible and scalable platform for their IT operations.
One of the key differences between Azure Stack HCI and Hyper-V is their architecture. Azure Stack HCI is built on a distributed architecture, which allows for greater scalability and flexibility. In contrast, Hyper-V is a monolithic architecture that can be more challenging to manage and scale.
Azure Stack HCI also offers a more comprehensive set of features and tools, including support for Kubernetes and containerized applications. This makes it a popular choice for organizations that need to deploy and manage complex workloads.
What Is Azure Stack HCI?
Azure Stack HCI is a new hyperconverged infrastructure offering from Microsoft as an Azure service that enables hyperconverged infrastructure from Microsoft Azure to run virtual machines.
It provides all Microsoft’s new features and capabilities in terms of an enterprise hypervisor, blending on-premises capabilities with those found in Microsoft Azure.
The Azure Stack hyperconverged infrastructure solution runs on top of a custom-built operating system, separate from Windows Server 2019 or Windows Server 2022.
You can run Azure Stack HCI on your own datacenter hardware, or use ready-nodes from a certified Azure Stack HCI vendor, which is arguably the easier approach to ensure the hardware is supported.
Azure Stack HCI is equally adept running in large cluster configurations in the enterprise data center or in a simple two-node configuration in branch offices.
What Is HCI?
Hyperconverged infrastructure, or HCI for short, is a way of running virtual machines that's both efficient and easy to manage. It combines all the necessary components, such as software, hardware, and networking, into one cohesive unit.
In an HCI cluster, each server contains its own compute, storage, and networking functionality, and shares these resources with other cluster members without needing external devices.
This approach eliminates the need for separate storage area networks, or SANs, which can be a hassle to manage.
What Is?
Azure Stack HCI is a hyperconverged infrastructure offering from Microsoft that enables you to run virtual machines on-premises, blending capabilities with those found in Microsoft Azure.
It runs on a custom-built operating system, not Windows Server 2019 or Windows Server 2022, which provides a purpose-built platform for virtualization and an Azure integrated virtualization stack.
You can run Azure Stack HCI on your own datacenter hardware or use ready-nodes from a certified vendor, which is arguably the easier approach to ensure hardware support.
It's equally adept in large cluster configurations or simple two-node configurations in branch offices, requiring minimal hardware and software configurations.
Azure Stack HCI is part of the Azure Stack family, built from the Azure Stack DNA.
Key Features and Benefits
Azure Stack HCI offers a range of features that set it apart from Hyper-V, including secured-core server, GPU enablement for machine learning use cases, and Virtual Desktop Infrastructure (VDI). These features provide a strong foundation for running business-critical workloads like SQL Server with high availability.
Azure Stack HCI also includes a thin provisioning feature, which allows for more efficient use of storage resources. Additionally, it can host both Windows Server and Linux workloads, making it a versatile solution for IT environments.
Some of the key features of Azure Stack HCI include:
- Secured-core server
- GPU enablement for machine learning use cases
- Virtual Desktop Infrastructure (VDI)
- Thin provisioning feature
- Host Windows Server and Linux workloads
Features
Azure Stack HCI is a powerful solution that offers a range of features to support your business needs. It includes secured-core servers, GPU enablement for machine learning use cases, and Virtual Desktop Infrastructure (VDI).
Azure Stack HCI also supports thin provisioning, which allows you to allocate storage space as needed, and host both Windows Server and Linux workloads. This flexibility makes it an ideal choice for businesses with diverse IT environments.
Some of the key features of Azure Stack HCI include:
- Secured-core server
- GPU enablement for machine learning use cases
- Virtual Desktop Infrastructure (VDI)
- Thin provisioning feature
- Host Windows Server and Linux workloads
- Runs as a highly available cluster configuration without a single point of failure
- Storage spaces direct – software-defined storage for storage performance
- Integrated systems with Azure hybrid services such as Azure Backup for disaster recovery, Azure Monitor (cloud-based monitoring), Microsoft Defender for Cloud, and cloud applications using Windows Admin Center on-premises
- Run business-critical workloads like SQL Server with high availability, mirror accelerated parity, persistent memory, and other Azure-inspired SDN features
Azure Local, on the other hand, is built on proven technologies including Hyper-V, Storage Spaces Direct, and core Azure Management service. Each Azure Local instance consists of 1 to 16 physical machines, all sharing common configurations and resources.
Microsoft Hardware Partners
Microsoft has a list of preferred hardware partners that offer validated designs for Azure Stack HCI clusters. You can find this list on Microsoft's official site.
Organizations can visit https://azurestackhcisolutions.azure.microsoft.com/ to see the catalog of validated partners and designs. This is a great resource for finding the right hardware for your hybrid cloud computing clusters.
To ensure a supported hardware configuration for Azure Stack HCI, it's best to go through a certified hardware vendor. They'll take care of the components required for the solution from a hardware perspective.
Buying Azure Stack HCI clusters using validated servers from certified partners is a good idea. This will also make it easier to get implementation and support services as part of the solution from Microsoft partners.
Comparison with Hyper-V
Microsoft Hyper-V is a traditional enterprise solution that businesses use by adding a Windows Server role to their Windows Server Datacenter Edition servers. It allows running as many virtual machines as your hardware can house.
While Hyper-V can utilize the same software-defined compute, storage, and networking technologies as Azure Stack HCI, it does so without integration with Microsoft Azure and its hybrid cloud computing features. This means that Hyper-V lacks the direct access to software-defined infrastructure technologies that Azure Stack HCI provides.
In contrast, Azure Stack HCI is fundamentally different from Hyper-V, offering a subscription-based model that's more attractive than the traditional CapEx model. This shift towards cloud-based services is a direction that Microsoft is heading, and it's likely that Hyper-V as we know it will eventually be phased out.
Microsoft Hyper-V Overview
Microsoft Hyper-V is the well-established enterprise hypervisor from Microsoft that many organizations are using today to host their virtual machines on-premises.
It's a popular choice for businesses because of its reliability and scalability. Hyper-V is widely used in the industry.
Microsoft Azure runs on a specialized version of the Hyper-V hypervisor, showing its robustness and flexibility.
Fundamentally Different
Azure Stack HCI solutions are fundamentally different from traditional enterprise solutions. They require a Windows Server Datacenter Edition server with a Windows Server role added.
The traditional enterprise solution, on the other hand, allows you to run as many virtual machines as your hardware can house. This is a major difference from Azure Stack HCI solutions.
Azure Stack HCI and Azure Stack Hub are also fundamentally different. While they share a mission, they differ in operational models, infrastructure requirements, and ideal use cases.
Shared Underlying Technologies
Microsoft Hyper-V uses many of the same software defined compute, storage, and networking technologies as Azure Stack HCI solutions.
Hyper-V can make use of these technologies without integration with Microsoft Azure, which is a key difference between the two solutions.
Differences Between and
Azure Stack HCI and Azure Stack Hub have distinct operational models, with Azure Stack HCI exceling in situations requiring flexibility and minimal server footprint.
Azure Stack HCI provides direct access to software-defined infrastructure technologies, making it a practical solution for replacing aging infrastructure.
In contrast, Azure Stack Hub encourages the development of new skills and requires a larger server footprint, providing a more controlled Hyper-V environment for consistency with Azure.
Azure Stack HCI offers access to Hyper-V features and AVD, which sets it apart from Azure Stack Hub.
Azure Stack Hub's lack of exposure to software-defined infrastructure technologies is a notable difference from Azure Stack HCI.
Choosing Between Hyper-V and VMware
If you're considering virtualization options, you're likely weighing the pros and cons of Hyper-V and VMware. Hyper-V is a solid choice, especially if you're already invested in the Microsoft ecosystem.
One key consideration is the cost of ownership. Azure Stack HCI, a more recent offering, requires a significant upfront investment in certified nodes. On the other hand, Hyper-V is included with Windows Server Datacenter licensing, making it a more cost-effective option for those already invested in Microsoft products.
However, the future of Hyper-V is uncertain. Microsoft's direction is shifting towards cloud-based services, and it's possible that Hyper-V as we know it may eventually be phased out.
Managing with Windows Admin Center
Managing with Windows Admin Center is a key feature of Azure Stack HCI and traditional Hyper-V hyperconverged cluster configurations. You can manage both solutions using Windows Admin Center, which provides a modern, web-driven interface.
With Windows Admin Center, you can onboard hyperconverged solution configurations using traditional Hyper-V failover clusters and manage them with many of the same capabilities.
Azure Stack HCI can be managed directly from the Microsoft Azure portal, but Windows Admin Center offers an alternative on-premises management option.
Windows Admin Center allows IT admins to expose on-premises infrastructure to Azure services easily, making it a convenient option for hybrid environments.
If you're using Storage Spaces Direct (S2D), you'll need to use Windows Admin Center for management or stick to low-level PowerShell management of the Storage Spaces Direct storage.
Windows Server Replacement Options
Azure Stack HCI is not a replacement for Windows Server, but rather a host for it. It provides a place for Windows Server to live, allowing it to run virtual machines and other services.
You can't directly replace Windows Server with Azure Stack HCI, as they serve different purposes. Windows Server is an operating system that offers various functionalities, such as Active Directory services and DNS and DHCP services.
Azure Stack HCI can host Windows virtual machines, making it a suitable option for running Windows Server-based workloads. This flexibility makes it an attractive choice for businesses looking to modernize their IT infrastructure.
Windows Server needs a host, and Azure Stack HCI can fill that role. This allows businesses to run their Windows Server-based services in a more efficient and scalable manner.
Use Cases and Scenarios
Azure Stack HCI is ideal for organizations with legacy applications, aging infrastructure, or a need for a lower server footprint. It's perfect for remote offices and branches where central management and integration with Azure services are a must.
Azure Stack HCI supports the AVD service, making it a solid choice for organizations with a remote workforce. This allows them to run virtualized workloads, deploy and manage HCI clusters, and modernize Remote Desktop Server environments.
Azure Stack Hub, on the other hand, is designed for organizations that need to run PaaS services on-premises in a disconnected scenario. It's also great for those who require strong multi-tenancy and modern DevOps practices, providing a consistent hybrid development and runtime environment.
Here are some key use cases for Azure Stack HCI and Azure Stack Hub:
Azure Arc is another option that brings hybrid cloud features to Hyper-V clusters, allowing businesses to "Azure-enable" their on-premises technologies and benefit from many of the Azure solutions available.
Use Case Scenarios
Azure Stack HCI and Azure Stack Hub are designed to address specific needs of organizations, and it's essential to understand their use cases to make informed decisions.
Azure Stack HCI is ideal for scenarios requiring the virtualization of legacy applications, replacement of aging infrastructure, or maintaining a lower server footprint, such as in remote offices and branches.
Organizations with a remote workforce can benefit from Azure Stack HCI's support for the AVD service, allowing them to run virtualized workloads, deploy and manage HCI clusters, and modernize Remote Desktop Server (RDS) environments.
Azure Stack HCI enables organizations to run virtualized workloads, including virtual machines and AVD, and deploy HCI clusters in remote or branch offices while benefiting from centralized management and integration with Azure services.
Azure Stack Hub is perfect for organizations needing to run PaaS (platform-as-a-service) services on-premises in a disconnected scenario, enforce strong multi-tenancy, or support modern DevOps practices.
Azure Stack Hub provides a uniform environment with Azure, allowing organizations to run Azure PaaS in disconnected or low-bandwidth environments and maintain control over data to ensure compliance with local regulations.
Organizations can use Azure Stack Hub to reduce latency and improve performance for applications that require real-time data processing, keeping data on-premises to meet local regulations.
Azure Stack HCI and Azure Stack Hub offer distinct benefits, and understanding their use cases can help organizations choose the right solution for their needs.
Here are some key benefits of Azure Stack HCI and Azure Stack Hub:
Bring Capabilities to Clusters
Azure Arc brings many of the same capabilities to Hyper-V clusters as Azure Stack HCI. This means businesses can leverage Azure solutions on-premises.
Microsoft is providing hybrid cloud features to traditional Windows Server operating system configurations outside of Azure Stack HCI using Azure Arc. This allows for more flexibility in deployment options.
Azure Arc allows businesses to "Azure-enable" their on-premises technologies, benefiting from many of the Azure solutions available. This is a game-changer for companies looking to modernize their infrastructure.
By using Azure Arc, businesses can take advantage of Azure's scalability and flexibility without having to migrate their entire infrastructure to the cloud.
Sources
- https://www.virtualizationhowto.com/2022/09/azure-stack-hci-vs-hyper-v/
- https://azurestack.blog/2019/03/azurestack-vs-azurestackhci/
- https://getnerdio.com/resources/understanding-differences-azure-stack-and-azure-stack-hci/
- https://learn.microsoft.com/en-us/azure-stack/hci/overview
- https://www.techielass.com/azure-stack-hci-the-best-of-the-cloud-and-on-premises/
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