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Microsoft SystemCenter blogsite about virtualization on-premises and Cloud

Microsoft Windows Server 8 Hyper-V Overview

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Multi-tenancy, Isolation & Quality of Service (QoS)

  • Hyper-V Network Virtualization:
    • Allows you to keep your own internal IP addresses when moving to the cloud while providing isolation from other organizations’ VMs – even if those VMs use the same exact IP addresses
  • Hyper-V Extensible Switch provides:
    • Multi-tenant security and isolation options
    • Traffic shaping and network traffic control
    • Built-in security protection against malicious VMs
  • Quality of Services (QoS) bandwidth management to improve overall performance in virtualized environments.
  • Resource Metering to support more detailed and accurate usage billing

But we did not stop there. The growing importance of virtualization and cloud services in enterprises and for hosting providers requires increased system responsiveness to meet SLAs and customer expectations. Windows Server 8 provides significant improvements in scalability and performance for virtualized platforms that help IT organizations use a fixed amount of resources to run more workloads faster with Hyper-V, and to offload specific processes to hardware. The result is a high density and highly scalable environment that can be adapted to perform at optimum levels based on customers’ requirements. Windows Server 8 includes a number of features that help support faster, even more reliable virtualized environments. Here are just a few of the new capabilities in the Windows Server 8 developer preview.

Massive Scale & Performance

  • Support for up to 160 logical processors per host
  • Support for up to 2 TB of memory per host
  • Support for up to 32 virtual processors per virtual machine
  • Support for up to 512 GB of memory per virtual machine
  • New VHDX virtual hard disk format with support for up to 16 TB per virtual disk and support for next-generation hard disks with larger disk sectors
    • Hyper-V Pass Through Disks have no maximum limit other than what is supported by the guest OS
  • Hyper-V Single Root-I/O Virtualization (SR-IOV) which enables you to map Network Interface Cards (NICs) within VMs for scale up workloads. SR-IOV is particularly important for workloads that require >10GbE
  • Hyper-V Offloaded Data Transfer (ODX) which enables secure, offloaded transfers between virtual disks, arrays and across data center with little to no CPU utilization.
  • Guest Fiber Channel which provides:
    • Increased virtual machine storage options with support for Fibre Channel storage area networks (SANs)
    • Support for guest clustering via FC
    • Support for guest multi-path IO (MPIO)

Complete VM Mobility

  • Share Nothing Live Migration allows you to Live Migrate VMs with nothing but a network connection
  • Live Storage Migration enables no downtime storage servicing and storage load balancing
  • Concurrent Live Migrations and Concurrent Live Storage Migrations allows you to Live Migrate as many virtual machines or as much virtual storage as you’d like. Hyper-V has no limits. The only limits are based on how much hardware you provide
  • Live Migration Prioritization
  • Hyper-V support for SMB2.2 file based storage, making it easier to provision and manage storage, taking advantage of existing network investments

With Windows Server 8 Hyper-V, we heard you loud and clear. Per your request, any part of a virtual machine can be live migrated with or without high availability. The choice is yours. Cloud computing on your terms provides you maximum flexibility based on your requirements.

Keep up to date about Microsoft Windows 8 and Cloud Technology on this blog site : http://blogs.technet.com/b/server-cloud/

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Author: James van den Berg

I'm Microsoft Architect and ICT Specialist and Microsoft MVP System Center Cloud and Datacenter Management

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