Nested virtualization makes sense when a business wants to deploy additional Hyper-V hosts and needs to minimize hardware costs. This has historically been a "no go" in Windows Server Hyper-V, but we finally have that ability in Windows Server 2016. Nested virtualization refers to the capability of a virtual machine to itself host virtual machines. Claims-based identity is crucial thanks to the need for single-sign on (SSO) between on-premises Active Directory and various cloud-based services.ĪDFS v4 in Windows Server 2016 finally brings support for OpenID Connect-based authentication, multi-factor authentication (MFA), and what Microsoft calls "hybrid conditional access." This latter technology allows ADFS to respond when user or device attributes fall out of compliance with security policies on either end of the trust relationship. ADFS v4Īctive Directory Federation Services (ADFS) is a Windows Server role that supports claims (token)-based identity. Storage Spaces Direct in Windows Server 2016 extends Storage Spaces to allow failover cluster nodes to use their local storage inside this cluster, avoiding the previous necessity of a shared storage fabric. Storage Spaces is a cool Windows Server feature that makes it more affordable for administrators to create redundant and flexible disk storage. ReFS is intended as a high-performance, high-resiliency file system intended for use with Storage Spaces Direct (discussed next in this article) and Hyper-V workloads. In Windows Server 2016, we finally get a stable version. The Resilient File System (ReFS) has been a long time coming in Windows Server. Therefore, we can now deploy Linux VMs under Windows Server 2016 Hyper-V with no trouble without having to disable the otherwise stellar Secure Boot feature. Nowadays, the Windows Server and Azure engineering teams seemingly love Linux. Technically, the VM's UEFI firmware presents a "Failed Secure Boot Verification" error and stops startup. The problem with Windows Server-based Secure Boot is that your server would blow up (figuratively speaking) if you tried to create a Linux-based Generation 2 Hyper-V VM because the Linux kernel drivers weren't part of the trusted device store. Secure Boot is part of the Unified Extensible Firmware Interface (UEFI) specification that protects a server's startup environment against the injection of rootkits or other assorted boot-time malware. Hyper-V containers are appropriate for high-trust workloads. Instead, its a "super isolated" containerized Windows Server instance that is completely isolated from other containers and potentially from the host server. This container type is intended for low-trust workloads where you don't mind that container instances running on the same server may share some common resources Windows Server 2016 offers two different types of "containerized" Windows Server instances: They allow you to isolate applications and services in an agile, easy-to-administer way. Until now, containers have existed almost entirely in the Linux/UNIX open-source world. Microsoft is working closely with the Docker development team to bring Docker-based containers to Windows Server. However, Nano does include a minimal local management UI called "Nano Server Recovery Console," shown in the previous screenshot, that allows you to perform initial configuration tasks. Nano is intended to be managed completely remotely.
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