Windows Server Virtualization

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WINDOWS 2008 …

WINDOWS 2008
Windows Virtualization Architecture

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  • 1.  
  • 2.
    • Must support hardware virtualization
      • Intel’s Virtualization Technology
      • AMD’s “Pacifica”
    • Must support x64 extensions
  • 3.
    • • Microsoft has interoperability agreements with both XenSource and Novell
    • • VHD image format available via the Open Specification Promise
    • • A beta version will be available with the RTM version of Windows Server 2008
  • 4.
    • Secure Virtualization Platform
    • Server Core
    • Virtual Server Migration
    • Group Policy Integration
    • Utilization Counters
    • Virtual Machine Snapshots
    • Scripting Interface (Automation via WMI)
    • Dynamic Secure Storage
    CPU Utilization Control
    • Offline VHD Manipulation
    • Non-Microsoft Guest OS Support
  • 5. Host OS VMM Guest 1 Guest 2 VMM Guest 1 Guest 2 Host OS VMM Guest 1 Guest 2 Type-2 VMM Type-1 VMM (Hypervisor) Hybrid VMM Examples: JVM CLR Examples: Virtual PC & Virtual Server Examples: Windows Virtualization Hardware Hardware Hardware
  • 6. Windows (core) Kernel Windows Hypervisor Hardware Parent partition Child partition Guest Applications Windows Kernel Virtualization Stack Provided by Windows Win Virtualization Others VMBus VSPs VSCs VM Service WMI VM Worker
  • 7.
    • Transferring data through a ring buffer
      • A means of mapping a ring buffer into multiple partitions
      • A definition for the format of the ring buffer
      • A means of signaling that a ring buffer has gone non-empty
    Ring 0 is the level with the most privileges and interacts most directly with the physical hardware such as the CPU and memory. Hyper-V on top in ‘new’ ring 1 Ring 1 is the level where Guests communicate (VMBUS) Ring 2 is the level for privileged code (user programs with I/O access permissions) Ring 3 is the level for unprivileged code (nearly all user programs)
  • 8.
    • Guest OS controls their devices directly
      • Parent OS gives up control of these devices
    • Ownership of a device is exclusive
    • Performance can match that of a non-virtualized machine
    • Dependence of partitions can be minimized
    • Strong isolation of partitions can be achieved
  • 9.  
  • 10.
    • Volume shadow copy
    • No need to power down virtual machines
    • Snapshots
  • 11. Host Host Cluster Automatic Failover
  • 12. SCVMM HOST1 HOST2 Virtual Machines
  • 13.
    • Failover Clustering
    • Quick Migration
    • Backup
  • 14.
    • Centralized deployment and management of virtual machines
    • Intelligent Placement analysis to determine the best servers for virtualization
    • Quick physical-to-virtual and virtual-to-virtual conversion
    • Faster deployments with administrator-managed self-service provisioning
    • Quick automation via PowerShell scripting integration
  • 15.  
  • 16.
    • Windows Server Virtualization uses a new architecture that offers significant improvements over previous offerings
    • Virtual machines are managed using an MMC console and automated using WMI, SCVMM and Windows PowerShell
    • Hosts / Guests clustering
    • >32Gb per Guest
    • Max. 8 cpu’s per Guest
    • Hot-swap memory, cpu, network