Hyper-V 2.0 Feature overview

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I love Bink.nu and Hypervoria ! Yesterday Hypervoria.com reported on 2.0 with new features that encroach onto VMware territory in a big way, however there a few features I’m really loving at this stage:

Live Migration

The most anticipated is of course Live Migration: moving running VM’s from one host to another without interruption of services running inside the VM’s

To accomplish this technique a new shared file sytem is needed and so will also be introduced in Hyper-V 2.0: Clustered Shared Volumes.

The Live migration works best together with Virtual Machine Manager 2008, it can provide additional Live Migration management and orchestration scenarios such as Live Migration via policy.

Cool thing is you only need to update to Hyper-V 2.0, none of the rest of the infractructere needs updating.

Logical Processor

  • Support for 32 logical processors on host computer
  • Twice the initial supported number of logical processors of Windows Server 2008 Hyper-V

Hot add remove

  • Add and remove and pass-through disks to a running VM without requiring a reboot.
  • Hot-add/remove disk only applies to VHDs and pass-through disks attached to the SCSI controller (not the IDE controller)
  • Hot-add remove of storage controllers is not supported

Benefits

  • Enables storage growth in VMs without downtime
  • Enables additional datacenter backup scenarios

SLAT

Second Level Translation (SLAT)

Overview

  • Leverage new processor features to improve performance and reduce load on Windows Hypervisor
  • AMD: Enhanced Page Tables
  • Intel: Nested Page Tables
  • Benefits
  • Improved memory management performance
  • Memory usage of Windows Hypervisor will decrease from approximately 5% to 1% of total physical memory.
  • More memory will be available for child partitions enabling higher consolidation ratios

Dynamic Memory

Overview

  • Pool of memory is dynamically distributed across VMs
  • Memory is dynamically allocated/removed based VM usage with no service interruption

PLUS the real kicker for me:

Boot from VHD

Allows any VHD to work on physical hardware, this is very interesting! Boot an OS VHD on your physical hardware.

Checkout the original post here, more on what this may mean for HA and DR later……. 😉