New for System Devices

The Windows Driver Kit (WDK) that is released with Windows Server 2008 includes enhancements to the following system device technologies:

  • Windows Hardware Error Architecture

  • Dynamic Hardware Partitioning

The WDK that is released with Windows Server 2008 also introduces the hypervisor.

Windows Hardware Error Architecture

For Windows Server 2008, the Windows Hardware Error Architecture (WHEA) supports the following additional features:

  • Platform-specific hardware error driver (PSHED) plug-ins

  • Error record persistence mechanisms

  • Error management applications

For more information about WHEA, see Windows Hardware Error Architecture Design Guide.

Dynamic Hardware Partitioning

The Dynamic Hardware Partitioning (DHP) section has been moved from the Systems Devices section to the Kernel-Mode Programming Techniques section.


Hypervisor is a technology that will be initially supported in Windows Server 2008 with Hyper-V. Hypervisor is introduced in Windows Server 2008 with Hyper-V. A hypervisor is a layer of software that sits just above the hardware and beneath one or more operating systems. The hypervisor's primary job is to provide isolated execution environments called partitions. Each partition is provided with its own set of hardware resources (memory, devices, CPU cycles). The hypervisor controls and arbitrates access to the underlying hardware.

For more information, see Hypervisor Top-Level Functional Specification 3.0a: Windows Server 2012.



Send comments about this topic to Microsoft