![]() Runs on the same operating system version as the host (Hyper-V isolation enables you to run earlier versions of the same OS in a lightweight VM environment)ĭeploy individual VMs by using Windows Admin Center or Hyper-V Manager deploy multiple VMs by using PowerShell or System Center Virtual Machine Manager.ĭeploy individual containers by using Docker via command line deploy multiple containers by using an orchestrator such as Azure Kubernetes Service.ĭownload and install operating system updates on each VM. Runs just about any operating system inside the virtual machine Runs the user mode portion of an operating system, and can be tailored to contain just the needed services for your app, using fewer system resources. Runs a complete operating system including the kernel, thus requiring more system resources (CPU, memory, and storage). (You can increase the security by using Hyper-V isolation mode to isolate each container in a lightweight VM). Typically provides lightweight isolation from the host and other containers, but doesn't provide as strong a security boundary as a VM. This is useful when a strong security boundary is critical, such as hosting apps from competing companies on the same server or cluster. Provides complete isolation from the host operating system and other VMs. The following table shows some of the similarities and differences of these complementary technologies. In contrast to containers, VMs run a complete operating system–including its own kernel–as shown in this diagram. Containers build on top of the host operating system's kernel (which can be thought of as the buried plumbing of the operating system), and contain only apps and some lightweight operating system APIs and services that run in user mode, as shown in this diagram. ![]() Container architectureĪ container is an isolated, lightweight silo for running an application on the host operating system. Containers and VMs each have their uses–in fact, many deployments of containers use VMs as the host operating system rather than running directly on the hardware, especially when running containers in the cloud.įor an overview of containers, see Windows and containers. This topic discusses some of the key similarities and differences between containers and virtual machines (VMs), and when you might want to use each. ![]() Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016 ![]()
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