In Windows Server© 2012, Hyper-V® provides new security and multitenant isolation capabilities to keep virtual machines isolated—even when they are stored on the same physical server. You can expand this with a fully extensible virtual switch, which enables Microsoft partners to develop plug-ins for enhanced networking and security capabilities. These functionalities provide a solution that addresses the complex security requirements of virtual environments.
Flexible infrastructure, when and where you need it, is key to easily managing and accessing your virtualized network. With Hyper-V, you can scale beyond virtual local area networks (VLANs) using network virtualization and can place a virtual machine on any node, regardless of its IP address. You can migrate your virtual machines and virtual machine storage flexibly—this includes migrating outside a clustered environment and fully automating management tasks, which reduces the administrative overhead in your environment.
Scalability, performance, and density
Hyper-V provides support for up to 64 processors and 1 terabyte (TB) of memory for guest operating systems. It also offers a new virtual hard disk format with larger disk capacity that supports up to 64 TB per virtual disk, and provides additional resiliency to enable you to virtualize large-scale workloads. Other new functionalities include resource metering to measure and track consumption of physical resources, support for Offloaded Data Transfer, and improved Quality of Service (QoS) to enforce minimum bandwidth requirements (including network storage requirements).
Just being able to scale and perform is not enough—you need to ensure that your virtual machines are available when they are needed. Hyper-V provides a wide variety of nigh availability options. These include simple incremental backup support, enhancements in clustered environments to support up to 4000 virtual machines, parallel live migrations, and encryption with BitLocker® Drive Encryption. You can also use Hyper-V Replica, which replicates virtual machines to an offsite location and provides failover to that site if a failure at the primary site occurs.