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Cisco Unified Computing System, Citrix XenDesktop, and Atlantis ILIOWhite PaperNovember 2010

ContentsExecutive Summary .................................................................................................................................... 4 The Challenge .............................................................................................................................................. 6 Delivering a Quality VDI Desktop Experience at the Cost of a Physical PC ............................................ 6 Balancing VDI Desktop Performance, Cost, and Scalability .................................................................... 7 The VDI Memory Bottleneck ..................................................................................................................... 7 The VDI Storage Bottleneck ..................................................................................................................... 7 Persistent vs. Stateless VDI Desktops and the Implications for VDI Design ........................................... 8 Persistent vs. Stateless Desktop Definitions ........................................................................................ 8 The Solution: Cisco Unified Computing System and Atlantis ILIO ..................................................... 10 Cisco UCS Solution Overview ................................................................................................................ 10 Cisco Extended Memory Architecture .................................................................................................... 11 Atlantis ILIO Solution Overview .............................................................................................................. 12 VDI Storage Reduction ........................................................................................................................... 12 IOPS Offload ...................................................................................................................................... 12 Physical Storage Consolidation .......................................................................................................... 12 Increase Storage Choices .................................................................................................................. 13 VDI Performance Acceleration ........................................................................................................... 13 Cisco, Citrix, and Atlantis Joint VDI Architecture .................................................................................... 13 Pre-Configured Atlantis ILIO Virtual Appliances for Ease of Deployment.......................................... 13 Lower Cost per Desktop ..................................................................................................................... 14 Flexibility in Storage Choices and VDI Desktop Models .................................................................... 14 Leading Density and Performance with Windows 7 and Anti-Virus ................................................... 14 Modularity and Scalability ................................................................................................................... 14 Cisco UCS with Atlantis ILIO Top-of-Rack..................................................................................... 14 Cisco UCS with Atlantis ILIO OnBlade .......................................................................................... 15 Cisco Unified Computing System and Atlantis ILIO Solution Architecture ............................................. 15 Reference Architecture Overview ........................................................................................................... 15 VDI Environment Configuration .......................................................................................................... 15 Summary of Environment............................................................................................................... 15 Atlantis ILIO Top of Rack Solution ................................................................................................. 15 Atlantis ILIO OnBlade Solution ...................................................................................................... 15 Cisco UCS Hardware Configuration for Top of Rack Solution....................................................... 15 Architecture and Design ......................................................................................................................... 18 Operating System ............................................................................................................................... 19 Tuning Microsoft Windows 7 Image for VDI................................................................................... 19 Anti-Virus ............................................................................................................................................ 20 McAfee Virus Scan 8.7i Configuration ........................................................................................... 20 Solution Validation and Testing Methodology ........................................................................................ 21 Test Methodology and Success Criteria............................................................................................. 22 Load Generation ................................................................................................................................. 22 User Workload SimulationLogin VSI From Login Consultants ....................................................... 23 Success Criteria ................................................................................................................................. 23 Login VSI Corrected Optimal Performance Index (COPI) .................................................................. 24 Login VSI Max .................................................................................................................................... 24 Test Results ............................................................................................................................................ 24 Summary ............................................................................................................................................ 25 Detailed Test Results ......................................................................................................................... 26 Atlantis ILIO Top-of-Rack ............................................................................................................... 26 Additional ESX Host CPU, Memory, and Network Utilization Data ............................................... 28 Atlantis ILIO OnBlade ..................................................................................................................... 30 Additional ESX host CPU, Memory, and Network Utilization Data ................................................ 32 VDI Scaling and Sizing Guidelines ......................................................................................................... 34 Atlantis ILIO OnBlade Scaling Guidelines .......................................................................................... 34 2010 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information .White Paper Page 2

Cisco Unified Computing System ....................................................................................................... 37 Storage ............................................................................................................................................... 38 Atlantis ILIO OnBlade ..................................................................................................................... 38 Atlantis ILIO Top-of-Rack ............................................................................................................... 38 Storage Sizing Considerations for VDI Deployments using Shared Storage (Cisco UCS and Atlantis ILIO Top-of-Rack) .................................................................................................................................. 38 Storage Sizing Based on IOPS ...................................................................................................... 39 Storage Sizing for Capacity ........................................................................................................... 39 Persistent Desktop Capacity .......................................................................................................... 39 Stateless Desktop Capacity ........................................................................................................... 39 Atlantis ILIO Impact on Storage Sizing (Persistent or Stateless) .................................................. 39 Conclusion ................................................................................................................................................. 40 For More Information .............................................................................................................................. 41 Cisco Systems Information ................................................................................................................. 41 Atlantis Computing Information .......................................................................................................... 41 Citrix Information ................................................................................................................................ 41 Acknowledgements .................................................................................................................................. 42 Key contributors ............................................................................................

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