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Windows Server 2012 Networking Performance and Management

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1 Windows Server 2012 Networking Performance and Management
4/1/2017 4:21 AM WSV304 Windows Server 2012 Networking Performance and Management Ahmed Talat Senior Program Manager Lead Microsoft Corporation Prabu Rambadran Product Marketing Manager Microsoft Corporation © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2 Agenda Introduction Network management
4/1/2017 4:21 AM Agenda Introduction Network management Managing your network performance Features and improvements Performance analysis and tools © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

3 Highlights High Speed Networking on Windows Server 2012
4/1/2017 4:21 AM Highlights High Speed Networking on Windows Server 2012 Performance gains in a wide range of customer deployment workloads, both native and virtualized Networking stack optimized for present and future generation hardware Flexibility to fine tune and manage the stack to meet your workload specific goals © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

4 Windows Server 2012 Cloud Optimize Your IT
Beyond Virtualization Windows Server 2012 offers a dynamic, multi-tenant infrastructure that goes beyond virtualization to provide maximum flexibility for delivering and connecting to cloud services. The Power of Many Servers, the Simplicity of One Windows Server 2012 offers excellent economics by integrating a highly available and easy to manage multi-server platform with breakthrough efficiency and ubiquitous automation. Every App, Any Cloud Windows Server 2012 is a broad, scalable and elastic server platform that gives you the flexibility to build and deploy applications and websites on-premises, in the cloud and in a hybrid environment, using a consistent set of tools and frameworks. Modern Workstyle, Enabled Windows Server 2012empowers IT to provide users with flexible access to data and applications from virtually anywhere on any device with a rich user experience, while simplifying management and helping maintain security, control and compliance.

5 Key Takeaways Become an Expert
4/1/2017 4:21 AM Key Takeaways Become an Expert Understand some of the network management options available in Windows Server 2012 Know when to use a certain network feature to meet your specific workload needs and goals Use the available tools to quickly diagnose performance problems and bottlenecks in your workloads Fine tune your systems and hardware to achieve optimum Networking Performance on Windows Server 2012 © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

6 Network Management Resource Metering IPAM
PowerShell (covered through out the deck)

7 title Resource Metering 4/1/2017 4:21 AM
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

8 A two-tenant environment built with Hyper-V in Windows Server 2012
Resource Metering Features Metrics Ability to create Resource Pools Compatible with all Hyper-V Operations Data unaffected by Virtual Machine Movement Network Metering Port ACLs Active CPU usage Average memory use Minimum memory use Maximum memory use Maximum disk allocation Incoming network traffic Outgoing network traffic A two-tenant environment built with Hyper-V in Windows Server 2012

9 Resource Metering Continued …
Benefits Track VM use Aggregate data in a Multi-tenant environment Build Chargeback solutions Easy to use PowerShell cmdlets Basic model of Resource Metering PowerShell Cmdlets Enable resource Metering: Get-VM -ComputerName <Host Name> | Enable-VMResourceMetering Get VM metering data: Get-VM -ComputerName <Host Name> -Name <VM Name> | Measure-VM

10 IP Address Management(IPAM)
title IP Address Management(IPAM) © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

11 IP Address Management today
. . 3rd Party Solutions In-house tools Spreadsheets . . . No CapEx investment Simple to use for small networks….at first Automation Rich feature set Integration with own and MS DHCP/DNS Automation High degree of customization . . . Cons Pros Labor intensive estimated (~$10 per address per annum) Only performs address mgmt. Inflexible and does not scale High acquisition, support, and consulting costs Maintenance cost Relies on in-house support model Expensive to add new capabilities

12 Windows Server 8 IPAM Basics
Consists of IPAM server and (RSAT) client Server is in-box feature of Windows Server 8 Available in all SKUs, except server core Client runs on Windows 8 Client (RSAT) and Windows Server 8 Agentless architecture Supports MS DHCP and DNS Monitors and configures MS DNS and DHCP servers WS 2008, 2008R2 (and SPs), and WS 8 Manages both IPv4 and IPv6 addresses

13 Performance Features and Improvements
4/1/2017 4:21 AM Performance Features and Improvements © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

14 Let’s first cover some terminology
Processor. One physical processor, which can consist of one or more nodes. A physical processor is the same as a package, a socket, or a CPU. Non-uniform memory architecture (NUMA) node. A set of logical processors and cache that are close to one another. Core. One processing unit, which can consist of one or more logical processors. Logical processor (LP). One logical computing engine from the perspective of the operating system, application, or driver. In effect, a logical processor is a thread. Kernel Group. A set of up to 64 logical processors. Affinity. A preference indicated by a thread, process, or interrupt for operation on a particular processor, node, or group. Kernel Group (KGroup) Processor or Socket Processor or Socket NUMA Node Core LP NUMA Node Core LP

15 Performance metrics definitions
Latency. The time required for an operation to complete. Lower is better. Scalability. The ability to adapt to increasing demand on system resources. Higher is better. Throughput. The amount of data transferred or processed in a given time period. Higher is better. Path Length. The number of CPU cycles divided by the throughput. Lower is better. Variability / Jitter. Fluctuation in throughput and/or latency. Lower is better. L S T P J

16 Networking Features Receive Segment Coalescing (RSC)
P RSC: Multiple Inbound Packets Coalesced to reduce CPU load IT Pro has received a heavy workload and CPU utilization is almost 100%. Unable to increase receive throughput Examples: Backup Server or FTP Server RSC can help by coalescing multiple inbound packets into a larger buffer and effectively reduce per packet CPU cost Preliminary data shows up to a 20% reduction in CPU cycles depending on the workload All inbox 10G network adapters support the feature and have it on by default

17 Receive Segment Coalescing (RSC)
4/1/2017 4:21 AM demo Receive Segment Coalescing (RSC) © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

18 Networking Features Registered I/O (RIO)
L S T P J Developer is writing an Application that needs to send and receive data at microsecond granularity. Examples: 3D image processing or stock trading application Registered I/O (RIO) delivers low latency by “pinning” the application memory and reduces CPU cost RIO improves predictability with message latency (jitter) Example APIs: RIORegisterBuffer and RIOReceive

19 Low Latency Tunings and Considerations
IT Pro wants to fine tune their system for low latency application and minimize jitter Best Practices include: Disable C-states from BIOS Set Power Policy to High Performance Use powercfg utility Disable NIC Interrupt Moderation setting Disable Flow Control Disable Receive Side Scaling Disable Receive Segment Coalescing (RSC) Use thread affinity in Task Manager to partition work by nodes Check out

20 (E.g. Using localhost as TCP destination)
Networking Features TCP Loopback Fast Path L T P Winsock Application (E.g. Using localhost as TCP destination) AFD TCP/IP NDIS kernel user Win08 R2 Loopback Path Windows 2008 R2 Windows Server 2012 Loopback Path New: Shorter Path Developer looking for an efficient and fast method to share data between processes on their Server. Examples: Database Servers and Business Applications like SAP Customer should use new IOCTL SIO_LOOPBACK_FAST_PATH socket option to take new shorter path Both sides of connection must set new option but can’t have SO_OOBINLINE, TCP_EXPEDITED_1122, or TCP_STDURG socket options

21 demo TCP Loopback fast path 4/1/2017 4:21 AM
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

22 Networking Features Receive Side Scaling (RSS)
IT Pro has received a heavy workload that is CPU bound and wants to scale their workload across CPUs Examples: Web Server and File Server Use RSS to distribute the receive network traffic either across multiple processors or multiple NUMA nodes IT Pros should use new Power Shell cmdlets to control RSS behavior based on their workload characteristics Dynamic Static NUMA aware Non NUMA Profile 1 Profile 2 Profile 3 (default) Profile 0 (like WS08 R2) PS C:\cim> Set-NetAdapterRss -? PS C:\cim> Set-NetAdapterRss -InterfaceDescription <String[]> -Profile <UInt32> -Confirm

23 Networking Features Receive Side Scaling (Continued)
Node 0 Node 1 Node 2 Node 3 queues 1 2 3 Incoming Packets NIC with 8 RSS queues New RSS profiles improve scalability on multi-node servers by distributing TCP/UDP receive traffic across nodes

24 Web Scalability Improvements
Single Process Multiple Processes (2 and 4) Throughput 43% 115% Hardware: 40LPs, 4 NUMA nodes , 10GigE, 128GB RAM Workload: mixed Web scenario Note: Measurements reflect release defaults 201% Throughput 50% Overall Web Server Scalability Improvements New K-Group awareness in the IIS thread pool Partitioning network I/O processing by K-Groups when using multiple NICs RSS NUMA profiles distribute network I/O processing across NUMA nodes

25 Networking Features Dynamic Virtual Machine Queues (VMQ)
An IT Pro wants to run more VMs on a physical machine but can’t because the incoming packet processing is saturating a limited set of CPUs on the physical host Examples: Private Cloud Deployments Use VMQ to dynamically distribute the receive network traffic across multiple VMs based on destination and network load Most inbox 10Gig Ethernet adapters support the feature which is enabled by default

26 Networking Features Dynamic VMQ (Continued)
Network IO path without VMQ Network IO path with VMQ Windows Server 2008 R2: Offloading routing and filtering of network packets to the network card (enabled by hardware-based receive queues) to reduce host overhead New in Windows Server 2012: Dynamically distributing incoming network traffic processing to host processors (based on processor utilization and network load)

27 Windows Server 2012 Improvements Hyper-V Host Scaling
1.8x scaling from 40VMs on 80 LPs to 80VMs on 160 LPs with dynamic VMQ Hardware: 160LPs, 8 NUMA nodes, 10Gigabit NIC, 512GB RAM Workload: 2VPs/VM mixed Web scenario Scenarios: Web Hosters Throughput 80LPs 160LPs Larger is better

28 Performance Analysis and Tools
4/1/2017 4:21 AM title Performance Analysis and Tools © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

29 Identifying performance bottlenecks using SPA 3.0
4/1/2017 4:21 AM demo Identifying performance bottlenecks using SPA 3.0 © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

30 Original Setting is derived from system tuning, empirical evidence
Performance Analysis and Tools Server Performance Advisor (SPA) 3.0 Zero install on servers Side by Side Comparison Report Historic Performance tracking and trending Thresholds can be modified Guide Performance optimizations via recommendations and next steps Can Turn On/Off EXAMPLE RULE Can Modify Thresholds Original Setting is derived from system tuning, empirical evidence

31 Performance Analysis and Tools New Performance Monitor Counters
Microsoft Winsock BSP Datagrams Drops or Rejected NUMA Node Memory Per-NUMA memory lists Overall system memory info per Node Network Adapter Processor Performance Power related counters Physical Network Interface Activity RDMA Activity

32 Performance Analysis and Tools PowerShell commands
4/1/2017 4:21 AM Performance Analysis and Tools PowerShell commands Get more information on hardware settings Get-NetAdapter W*n Get-NetAdapter L*n* -IncludeHidden (e.g. SSTP, PPTP) NetAdapter.Get-NetAdapterIPsecOffload NetAdapter.Get-NetAdapterLso NetAdapter.Get-NetAdapterRss NetAdapter.Get-NetAdapterRsc NetAdapter.Get-NetAdapterVmq | Where-Object –FilterScript {$_.Enabled} NetAdapter.Get-NetAdapterSrioVf –Name “Ethernet 1” Set specific properties on the hardware NetAdapter.Set-NetAdapterRss –Name “Ethernet 1” –Profile NUMAStatic NetAdapter.Set-NetAdapterSriov –Name “Ethernet 1” –NumVFs 31 –VPorts 64 EVERYTHING is configurable through PowerShell  © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

33 Performance Analysis and Tools PowerShell commands (Continued)
4/1/2017 4:21 AM Performance Analysis and Tools PowerShell commands (Continued) Enabling Performance features on the hardware NetAdapter.Enable-NetAdapterEncapsulatedPacketTaskOffload MyAdapter NetAdapter.Enable-NetAdapterIPsecOffload MyAdapter NetAdapter.Enable-NetAdapterLso MyAdapter –IPv4 NetAdapter.Enable-NetAdapterRdma MyAdapter NetAdapter.Enable-NetAdapterRsc MyAdapter Get-Help <cmdlet name> -Detailed Get-Help <cmdlet name> -Examples Get-Help <cmdlet name> -Full © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

34 Summary When do you use each feature?
4/1/2017 4:21 AM Summary When do you use each feature? Performance Metric Loopback Fast Path Registered I/O (RIO) Large Send Offload (LSO) Receive Segmentation Offload (RSC) Receive Side Scaling (RSS) Virtual Machine Queues (VMQ) Remote DMA (RDMA) Single Root I/O Virtual (SR-IOV) Lower End-to-End Latency X Higher Scalability Higher Throughput Lower Path Length Lower Variability © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

35 4/1/2017 4:21 AM Conclusion Performance improvements across a number of key Windows Server 2012 roles Out of box performance improvements for LAN and WAN scenarios Available tools for networking performance analysis and optimizations Quick overview of network management options in Windows Server 2012 © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

36 Related Content VIR303 – An Overview of Hyper-V Networking in Windows Server 2012 VIR305 – Hyper-V Network Virtualization for Scalable Multi-Tenancy in Windows MGT315 - Network Management in Microsoft System Center 2012 SP1 WSV314 – Windows Server 2012 NIC Teaming and Multichannel Solutions Visit networking booth at the partner pavillion to learn more

37 Related Content WSV321: Windows PowerShell Crash Course
WSV307: Windows Server 2012 IP Address Management WSV314: Windows Server 2012 NIC Teaming and Multichannel Solutions VIR303: An Overview of Hyper-V Networking in Windows Server 2012 VIR305: Hyper-V Network Virtualization for Scalable Multi-Tenancy in Windows VIR307: Get Hands-on with the New Hyper-V Extensible Switch in Windows Server 2012 WSV14 – HOL: Managing Your Network Infrastructure with IP Address Management WSV24 – HOL: Managing Network Infrastructure with Windows Server 2012

38 SIA, WSV, and VIR Track Resources
#TE(sessioncode) Talk to our Experts at the TLC Hands-On Labs DOWNLOAD Windows Server 2012 Release Candidate microsoft.com/windowsserver DOWNLOAD Windows Azure Windowsazure.com/ teched

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Connect. Share. Discuss. Microsoft Certification & Training Resources TechNet Resources for IT Professionals Resources for Developers

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42 4/1/2017 4:21 AM © 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION. © 2009 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

43 4/1/2017 4:21 AM © 2009 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.


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