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Download Presentation PowerPoint Slideshow about 'Dynamic Partitioning in Windows Longhorn' - paul An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. • A hardware partitionable server has the ability to create one or more isolated hardware partitions comprising processors, memory and I/O, each supporting a single Windows instance • A dynamically partitionable server has the ability to add, replace or remove hardware within a partition without needing to reboot the OS instance within the partition • Why is this interesting?

• Hardware partition support has been available on some large servers for a number of years • Windows is supported on hardware partitionable systems today, but does not support dynamic hardware partitioning • With the projected increase in processor performance Microsoft expects a number of these features to become available on mid-range systems • Microsoft plans to add support for dynamically partitionable hardware in Windows Longhorn. Core Core Core Core Core Core Core Core Cache Cache Cache Cache IO Bridge IO Bridge IO Bridge IO Bridge Longhorn dynamic hardware partitioning features are focused on improving server RAS Memory Memory Memory Memory Service Processor............ Partition Manager PCI Express Future Hardware Partitionable Server 1.Partition Manager provides the UI for partition creation and management 2. Service Processor controls the inter processor and IO connections 3. Platforms partitionable to the socket level.

Virtualization used for sub socket partitioning 4. Support for dynamic partitioning and socket replacement.

• Add: drivers can register for plug & play notifications of new hardware arriving • Driver developers have fewer memory size limitations than application developers, and pool sizes will not change even if overall memory grows. • The addition of processors and the related interrupt routing changes should also be invisible to drivers • So in the Add case most drivers will not do anything new • Replace: drivers will be unaffected and will see no change in the system • There are implications around device timeouts, as it will be necessary to quiesce the system whilst the replace operation completes • Remove: drivers cannot make hard assumptions about memory or thread affinity • Drivers cannot make any assumptions around thread affinity, or even that the affinity mask will remain contiguous as it is today. • NOTE: DP is a Server-only feature, so there are no new Client requirements arising from this feature • A number of new requirements are being proposed for the Microsoft logo program for Server to support DP • Most apply to either platform firmware or device drivers • Specific ACPI method support • Device drivers must not assume that the processor affinity mask is contiguous • We will also be providing test tools to ensure that you’re ready for Hot Remove support in a subsequent Windows release • These will apply to both applications and device drivers.