VSX 2012 Desktop Virtualization 101

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This slide deck was used as part of a conference session providing an introduction to desktop virtualization presented by Simon Bramfitt , founder of Entelechy Associates.

The session was held at the Virtualization Solutions Exchange (VSX 2012) November 2, 2012 at the Computer History Museum, Mountain View, California.

Information on VSX 2012 can be found here http://www.vsx2012.com/index.cfm

The PowerPoint file is available for download from Entelechy Associates here http://entelechy-associates.com/

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  • Understanding Desktop virtualization Delivery Models (Level 200)With an increasing number of employees bringing their own cell phones, laptops and tablets to work, today's IT organizations have been tasked with developing policies and strategies to effectively address emerging security, privacy and data protection issues through the management and provisioning of mobile and BYOD delivery models. This session will provide attendees with an overview of the differences between the Desktop-as-a-Service (DaaS), Intelligent Desktop Virtualization (IDV), and Virtual Desktop Infrastructure (VDI) delivery models. Key take-aways from this session include a basic understanding of how desktop virtualization platforms have evolved to better address BYOD and the use of mobile devices within today's enterprise IT environments.Prerequisites: Attendees should possess a basic understanding of the principles of BYOD and desktop virtualization.
  • Entelechy Associates is a California-based industry analyst organization with a particular focus on desktop management and application delivery technologies, we provide strategic guidance to both technology vendors and enterprise IT organizations looking to provide and implement next-generation application delivery services
  • The IBM 5150 Personal Computer was launched on August 12, 1981. At the time, the project team shocked IBM executives by forecasting that it would sell 250,000 units in three years. Just four years later IBM announced that it had sold 1 million PCs worldwide.In the last 30 years, over 3 billion PCs, and PC descendants have been sold.
  • Much has changed since the launch of the PCUser interfaces evolve beyond all recognition from the blocky green on black text of the DOS command prompt to the rich graphical interfaces driven by a mouse touch and voice that are used today. At the same time, computers are faster, smaller, and cheaper than ever before; with even the cheapest mobile phone having many times the computing power of the original 5150.Computers have got faster and cheaper in the intervening period, but personal computing has not got, in any meaningful sense, better.Today’s personal computing experience is still centered on the device. With few exceptions, applications and are still installed locally. The only way to ensure that applications are available as needed is to rigorously enforce standardization and ensure that all devices have required all applications preinstalled.That has to change
  • Setting aside the sales success of the PC, Estridge recognized something far more important than the overall market opportunity.“What we discovered was the way people responded emotionally to PCs was more important than what the computer actually did”A profound understanding that would take the best part of 30 years to be proven right.
  • This guy
  • When first introduced, the iPhone and iPad were unashamedly positioned as a consumer devices, expensive toys and no more than thatHowever, the outstanding utility that the combination of cloud services and high-performance tablets created, rapidly forgedthe transition from play thing to business toolNew market segments were created overnight, forcing established enterprise systems vendors to react if they wish to remain relevantOpening the door to a new generation of enterprise class servicesIt was only when real business value could be attached to consumer centric devices like the iPad that the problems started to surface.The iPad educated a new generation of employees to the opportunities inherent in of consumer centric devices.
  • Until BOOMThe collective voice of business is demanding change
  • IT’s response was built on virtualization
  • Virtualization arrived in the data centerTransforming inefficient physical servers
  • Into more versatile platforms capable of running multiple independent workloads
  • More importantly there workloads could be managed as a tightly integrated package of OS and Application providing provisioning flexibility and consistancy
  • Stands toto reason then that if we can do it with big server workloads we should be able to do it with the desktop
  • So we built VDI environments
  • And they didn’t work
  • Sometimes spectacularly.
  • The core problem is that while the core principle of server virtualization is to concentrate multiple OS/Application stacks on a hypervisor, desktop virtualization has very to with hypervisors
  • Creation - Dynamic, real time, flexiblePersonalized - yours, your apps, your data, your configTheir job and nothing but your job – rights management – eliminate Admin privileges Policy controls – pwd mgmt, data information leakage
  • VDI is just one type of desktop virtualization
  • We host multiple desktop OS instances on a hypervisor, but the real work is in managing the applications
  • Why are IOPS so important?Desktop operating systems like Microsoft Windows are designed to run with dedicated system resources – most importantly memory and storage. Ensuring adequate resources are available on a standalone desktop PC is never a challenge. A PC can readily accommodate 16 GB of memory and conventional low-cost (7,500 RPM) spinning disk storage can offer in excess of 1 TB and 80 IOPS per spindle, which is more than adequate for Windows 7. In a VDI environment, where many desktops are concentrated onto a single hypervisor platform, meeting these requirements becomes more difficult. Storage capacity is never a problem, compared to many systems, the amount of disk storage required for a VDI environment is low. Attaining the required throughput is, however, a different matter. With many hundreds, and in some cases many thousands, of desktops all sharing a common storage infrastructure, demand for IOPS presents a significant challenge. Furthermore, as a desktop operating system, Windows 7 was developed with the assumption that all operating system resources are available for its exclusive use. With VDI, many Windows desktops simultaneously and independently read and write to a shared set of storage resources in a manner that looks highly random since there is no coordination among the desktops. Random reads and writes present an interesting performance challenge for latency sensitive disk-based storage infrastructure.  The impact of this problem is most dramatically demonstrated in the “boot storm”. The Windows boot and logon processes generate many times more IOPS than steady-state user operations. When many desktops are all starting at once, for example at the start of a call center shift, the storage infrastructure will see an order of magnitude increase in load compared to the rest of the day. In poorly specified systems, this boot storm will overload the storage infrastructure, starving Windows desktops of resources, resulting in excessively long startup times and degrading performance across all active systems. Conventional storage solutions attempt to meet the IOPS challenge by scaling out – deploying many more high-performance disk drives than are needed for capacity purposes to deliver the required IOPS. This approach is capital intensive, represents a significant ongoing operational cost and is ultimately unsustainable as virtual desktop numbers increase. Scale-up solutions make use of Solid State Drive (SSD) storage systems which achieve much greater IOPS to meet boot storm load levels. However, SSDs have relatively low capacity and are expensive in comparison to conventional drives. Server based high-performance flash memory controllers can be used in conjunction with disk-based SANs to increase available IOPS, but these often cannot be used with blade servers which are frequently cited as the preferred hardware platform for VDI environments.  
  • Without enough IOPS boot and login time can extend from seconds to many minutes
  • However over the past few years vendors have worked hard to lower the cost of compute and storage to the point where today we can honestly say that VDI can cost less than a conventional PC
  • RDSH - Remote Desktop Services Host AKA – Citrix, Terminal Services, Service based Computing
  • 1 OS many independent sessionsHypervisor optional
  • Focus tends to be on service provide rather than technologyBut technology is still important
  • Microsoft licensing is biased against DaaS - but the older RDHS technology has a licensing model that is far more DaaS friendly and substantially cheaper
  • Pay close attention to the impact that latency can have on application performance in DaaS environments
  • DaaS decision making is harder due to diversity of provider and platform and possible application performance issuesBut for some use cases it could have potential
  • Put simple IDV runs a VDI style desktop on the endpoint rather than the data center -
  • As with VDI - IDV runs on a hypervisor And can run more than one managed desktop image per device
  • However in many caes IDV runs just a single manages OS image
  • IDV can work with both type I and type II hypervisors
  • And using the Mirage technology that VMware acquired with its Wanova acquisitionThe hypervisor can be dispensed with as well
  • IDV is today limited to x86 devices
  • Thank you
  • VSX 2012 Desktop Virtualization 101

    1. 1. Desktop Virtualization 101Understanding Desktop Virtualization Delivery Models
    2. 2. Introductions@SimonBramfitt
    3. 3. Don Estridge – President, IBM Entry Systems Division
    4. 4. “What we discovered was that the waypeople responded emotionally to PCs wasmore important than what the computeractually did.
    5. 5. Virtualization
    6. 6. Virtualization
    7. 7. Server Virtualization Application OS Hardware
    8. 8. Server Virtualization App App App OS OS OS Hypervisor Hardware
    9. 9. Server Virtualization App App App OS OS OS Hypervisor Hardware
    10. 10. What’s good for the Data CenterMust be good for the Desktop Right?
    11. 11. User User User User User User User User User User UserAppsApps Apps Apps Desktop Virtualization Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsOS OS OS OS OS OS OS OS OS OS OS Hypervisor Hardware
    12. 12. What is Desktop Virtualization?The creation of personalized working environments, the applications, dataand configuration settings that each user needs to do their job while at thesame time ensuring conformance with organizational governance, risk andcompliance management policies.
    13. 13. The creation ofpersonalized working environments,the applications, data and configuration settingsthat each user needs to do their jobwhile at the same time ensuring conformance withorganizational governance, risk and compliancemanagement policies.
    14. 14. Desktop Virtualization1. Desktop virtualization is the future of personal computing
    15. 15. VDI?
    16. 16. User User User User User User User User User User UserApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsAppsApps Apps Apps Apps Apps Apps Apps VDI? Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsOS OS OS OS OS OS OS OS OS OS OS Hypervisor Hardware
    17. 17. VDI- Virtual Desktop Infrastructure Server Hosted Desktop Virtualization (Gartner Inc.) Citrix XenDesktop, VDI-in-a-Box VMware View Dell vWorkspace Microsoft and others …
    18. 18. VDIDesktop Operating System (Windows)Remoting Protocol – Connected Operation OnlyEnd Point PC Thin Client Mobile Devices
    19. 19. VDI2. Moar IOPS!
    20. 20. IOPS v Login Time IOPS Login Time
    21. 21. VDI Compute/Storage Costs$2,500$2,000$1,500$1,000 $500 $- 2009 2010 2011 2012
    22. 22. VDI ChallengesDiscoveryIntegrationManaging ChangeUser ExperienceService Level Management
    23. 23. What about RDSH?
    24. 24. User User User User User User User User User User UserApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps AppsApps Apps Apps Apps Apps Apps Apps Apps Apps Apps Apps Windows Server 2008/2012 Hypervisor Hardware
    25. 25. RDSHEasier licensingLower cost licensingMore sessions per serverApplication-centric model is mobile friendlyMore matureNo IOPS concerns
    26. 26. VDIDesktop OSGreatest application compatibilitySimplest application supportPossibly more stable
    27. 27. RDSH3. There’s life in the old dog yet
    28. 28. DaaS?
    29. 29. DaaSDesktop as a ServiceVDI from the Cloud (Public/Private/Hybrid)Remoting Protocol – Connected Operation OnlyEnd Point PC Thin Client Mobile Devices
    30. 30. DaaSIBM, Fujitsu, Dell, CompuCom, RapidScale, tuCloud, dinCloud, …Desktone, Virtual Bridges, Citrix, View …
    31. 31. DaaS
    32. 32. RDSH for DaaSService Provider License Agreement AvailableMore flexible serviceLower cost
    33. 33. DaaSDisplay Data
    34. 34. DaaS ChallengesDiversity of provider and platformProvider stabilityApplication performanceUser experience
    35. 35. DaaS3. Could have potential
    36. 36. IDV?
    37. 37. IDVIntelligent Desktop Virtualization (Marketing Gone Wild)VMware Workstation, Fusion, MirageCitrix XenClientMokaFive BareMetal
    38. 38. IDVCentrally managedLocal execution Local compute, storage, graphics Disconnected OperationEnd Point PC only (today)
    39. 39. User UserApps AppsApps AppsApps AppsApps AppsApps AppsOS OS Hypervisor Hardware
    40. 40. User Apps Apps Apps Apps Apps OSHypervisorHardware
    41. 41. User AppsUser AppsApps AppsApps AppsApps AppsApps HypervisorApps OS Hardware
    42. 42. User Apps Apps Apps Apps Apps OSHypervisor Hardware
    43. 43. IDV ChallengesNot for mobile devicesLow awarenessLow adoptionLow prioritization
    44. 44. IDV3. If mobile is not a big part of your business consider this carefully

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