Hyper-V 2008R2 a fait ses preuves. Après quelques années de production, on peut dire qu’il répond parfaitement aux besoins des petites et moyennes structures dans sa version gratuite.

Hyper-V 2012 franchi un nouveau cap en introduisant des fonctionnalités indispensables aux infrastructures plus importantes : teaming de carte réseau natif, carte Fiber Channel pour les machines virtuelles, merge des snpashots à chaud…

Télécherger chez Microsoft le document « Feature Comparison Windows Server 2008 R2 Hyper-V and Windows Server 2012 Hyper-V »:

http://download.microsoft.com/download/2/C/A/2CA38362-37ED-4112-86A8-FDF14D5D4C9B/WS%202012%20Feature%20Comparison_Hyper-V.pdf

Quelques extraits :

Fonction

Windows Server 2008 R2 Hyper-V

Windows Server 2012 Hyper-V

Hyper-V Extensible Switch

This feature is not supported.

The Hyper-V Extensible Switch is a Layer 2 virtual network switch that provides programmatically managed and extensible capabilities to connect virtual machines to the physical network. The Hyper-V Extensible Switch is an open platform that lets vendors provide extensions written to standard Windows application programming interface (API) frameworks.

Network virtualization

Virtual LANs (VLANs) are used to isolate networks, but they are very complex to manage on a large scale.

Hyper-V Network Virtualization helps to isolate network traffic on a shared infrastructure without the need to use VLANs. It also allows users to move virtual machines, as needed, within a virtual infrastructure while preserving virtual network assignments.

Network Virtualization eliminates hierarchical IP address assignments across virtual machines.

A virtual machine can be placed on any node, regardless of IP address, even across the cloud.

Live migration

Windows Server 2008 R2 introduced the Live Migration feature, which permits users to move a running virtual machine from one physical computer to another with no downtime—assuming that the virtual machine is clustered.

Windows Server 2012 Hyper-V provides the ability to migrate virtual machines, with support for simultaneous live migrations. That is, users can move several virtual machines at the same time.

Live migrations are not limited to a cluster. Virtual machines can be migrated across cluster boundaries, and between stand-alone servers that are not part of a cluster.

Merging snapshots

In Hyper-V 2008 R2, merging a snapshot into a parent virtual machine requires the virtual machine to be turned off for the entirety of the merge operation.

The Hyper-V Live Merge feature allows users to merge snapshots back into the virtual machine while it continues to run.

Support for Single Root I/O Virtualization (SR-IOV) networking devices

This feature is not supported.

Windows Server 2012 Hyper-V enables support for SR-IOV-capable network devices and allows the SR-IOV virtual function of a physical network adapter to be assigned directly to a virtual machine.

Resource Metering in Hyper-V

This feature is not supported.

Resource Metering allows users to track how many CPU, memory, storage, and network resources are consumed by a virtual machine over time. This information is gathered automatically (without the need to constantly collect data from the virtual machine) and persists with the virtual machine through live migration/other mobility operations.

Windows Server 2012 Hyper-V can track and report the amount of data transferred per IP address or virtual machine.

Virtual Fibre Channel in Hyper-V

This feature is not supported.

Virtual Fibre Channel in Hyper-V provides Fibre Channel ports within the guest operating system.

Hyper-V clustering

Hyper-V 2008 R2 has specific features, like failover clustering and clustered live migration, that are related to Hyper-V clustering. These features are described later in this table.

Windows Server 2012 Hyper-V provides protection against application and service failure, and system and hardware failure.