techtalk parti vdi or tse design decisions

8/6/2019 TechTalk PartI VDI or TSE Design Decisions

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Ask the Architect TechTa

VDI or TS?

Selecting the Correct SolDaniel Feller – Lead ArchitectCitrix - Worldwide Consulting SolutionsAugust 2009

Follow me on Twitter: http://twitter.com/djfellerFollow my blog: http://Community.citrix.com/blogs/citrite/da

http://twitter.com/djfeller

http://community.citrix.com/blogs/citrite/danielf


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• Part I: VDI or TS: Selecting the Best Solution

• Part II: Designing a Desktop Virtualization Solutionwith XenDesktop

• Part III: Successfully Migrating Users to Virtual Des

• Series summary and registration links:http://community.citrix.com/blogs/citrite/danielf

XenDesktop – Ask the Architect TechTalk Ser





• Virtual Desktop Infrastructure (VDI)• Desktop delivery to user's device and operating environment

• Still require application integration into the desktop

• Terminal Services (TS)• Application delivery to user's desktop

• Still require "desktop" delivered to end point device

• Desktop virtualization solution requires• Desktop delivery with application integration

• End-to-End Solution

Different Objectives = Different Solutions



Desktop Definitions

Desktop Type Description Benefits Concerns

Traditional Desktop device with a locally installed operatingsystem

Simplicity SupportSecurity

Shared,

Server-based

Host applications/desktop from XenApp where the

user interacts through a transport protocol. This is a

type of virtual desktop

Scalable

SecurePersonal

Hosted Virtual

Desktop running either on virtualization layer or on

bare metal where the user interacts through a

transport protocol. This is a type of virtual desktop

Personal

SecureCost

Streamed

Desktop running entirely on bare metal device

where the user directly interacts with device. This is

a type of virtual desktop

Personal

CostSecure

Local Virtual

Desktop running entirely on bare metal and

continues to operate when disconnected from the

network. This is a type of virtual desktop

Personal

Cost

Mobile

Secure



Users



• Work within 1-3 applications

• Follows a "script"

• Repetitive tasks

• User success based on speed of completion

• Examples• Call Center agent

• Order entry

• Bank clerk

Structured Users

• Nurse

• Receptionist



• Work with numerous applications

• Personalize environment to improve efficiency

• Access to local hardware devices

• Success based on quality of deliverables

• Examples• Developers

• Consultants

• Executives

• Marketing

Unstructured Users

• Lawyers

• Teachers

• Scientists

• Sales

• Doctors

• Supervisors



Recommended Desktop

Category TraditionalShared,

Server-based

Hosted

VirtualStreamed

Structured

Workflows

Unstructured



• Mobility• Ability to work from many locations• Ability to work while disconnected

• Untethered

• Specialized Hardware• High-quality graphics cards

• Local sound cards

• Internal hardware (non-USB)

• High Security• Application and desktop access strictly controlled

Unstructured User Requirements



Recommended Desktop

Category Sub-Category TraditionalShared,

Server-based

Hosted

VirtualStreamed

Structured

Workflows

Unstructured

Mobile

Specialized Hardware

High Security

Everyone Else



Devices



• End of life devices

• Frequent hardware failures

• Lack of power saving features

• Device Delivery•

Appliance = Embedded OS• Mobile Phones = Embedded OS

• Options:• Host entire desktop

• Host applications

Replaced Endpoints



• Older devices not able to run latest software

• Less than 4-5 years old

• Device Delivery• Local install/configure

• Provision OS

• Options:• Host entire desktop

• Host applications

Repurposed Endpoints



• New devices recently purchased

• Adequate processor and memory capabilities

• Device Delivery• Provision OS

Network Stor

Reused Endpoints

Target Device 1

A single vDisk is streamed to man

devices.

Target Device 2

Provisioning Services

• Options• Streamed desktop

• Online/Offline applications



End Points

Replaced Repurposed Reused

Description Old devices Semi-usable devices New devices

Approach

Desktop appliances or thinclients

Mobile Devices

Locked down desktop OSwith Citrix Receiver

orProvision OS fully

configured

Provisioned endpointwith embedded Citrix

Receiver

A

Delivery OptionsHosted

DesktopsHosted

ApplicationsHosted

DesktopsHosted

ApplicationsStreamed Desktop

HDe



Desktop Delivery Recommendations

Device Delivery Desktop Deliver

Category Installed Streamed Embedded SharedHosted

VirtualStreamed

Replaced

Repurposed

Reused

BYOC



Desktop Delivery for Structured User



VirtualStreamed

Replaced

Repurposed

Reused Not Applicable Not Applicabl

BYOC Not Applicable



Desktop Delivery – Unstructured User



VirtualStreamed

Replaced

Repurposed

Reused

BYOC Not Applicable



Applications



• Hosted

• Streamed

• Installed

• User installed

• Helper applications/objects

• Runtime libraries

Application Assessment

PRO

Use a tool gather thisinformation•Citrix Edg

•Liquidwar



Application Dependencies

MicrosoftOffice 2007

SAPCamtasia 5.5

AdobeAcrobat 9

FireFox

Adobe FlashPlayerShockwave

MicrosoftOffice 2007

AdobeAcrobat 9

Adobe FlashPlayerShockwave



Application Delivery Methods

Installed on Desktop Virtualized on Desktop Virtu

Description Applications part of OS Executed locally,but not installed

ExecX

User access Every user receives app Only authorized users Only

UpdatesUpdate of base OS image

requiredApp Hub

Performance

Directly impacts CPU &Memory

Directly impacts CPU &Memory

Consumes networkbandwidth lightly

Onlyimpac

Resource usage Bound to desktop Bound to desktop Bo



Applications Delivery Options

Application

CategoriesBase Anomalous Resource Intensive

DescriptionCommon apps needed by

all users

Unique custom builtapps

Uncertified TerminalServices support

Have heavy systemrequirements

Lwi

ExampleMicrosoft Office (Word,

Excel, PowerPoint,Outlook), Adobe Acrobat

CAD/CAM, dataprocessing

Primary Delivery

MethodInstalled on Desktop Virtualized on Desktop Virtualized on Desktop V

Alternative

Delivery MethodVirtualized on Desktop

Installed on ServerInstalled on Desktop

Virtualized on ServerInstalled on

Desktop/Server



Application Delivery Example

Application Delivery Solution Justification Dependencies

SAP Virtualized on ServerMicrosoft OfficeAdobe Acrobat

Microsoft

Office

Virtualized to•Server•Hosted Virtual Desktops•Streamed Desktops•Local Virtual Desktops

The application is required acrossmany different devices as stand-alone and dependencies. Onepackage for all end points

None

ApplicationXInstalled to•Hosted Virtual Desktops•Streamed Desktops

Application contains a service thatcannot be streamed. None

Firefox

Virtualized to•Hosted Virtual Desktops•Streamed Desktops•Local Virtual Desktops

Helps guarantee updates andcentralized management

ShockwaveMedia PlayerFlash PlayerSilverlight



Desktop & Application Delivery for Structured


Category Installed Streamed Embedded Shared HostedVirtual

Streamed

Application Delivery: Virtualized on Server

Replaced

Repurposed

Reused



Desktop Delivery – Unstructured User


Category Installed Streamed Embedded Shared HostedVirtual

Streamed

Application Delivery: Mixed based on application type

Replaced

Repurposed

Reused

(Virtualized on Server, Virtualized on Desktop, or Installed on Desktop)



Conclusion



• Virtual Desktop Infrastructure (VDI)• Desktop delivery to user's device and operating environment

• Still require application integration into the desktop

• Terminal Services (TS)• Application delivery to user's desktop

•Still require "desktop" delivered to end point device

• Desktop virtualization solution requires• Desktop delivery with application integration

• End-to-End Solution

Biggest Take Away



All You Need to Identify Are 3 Things

• Users• How do your users work• Tasks oriented or project oriented

• Devices• What type of desktops/devices are needed

• Applications• Which applications are needed

• How applications are integrated/dependent



Want to Know More?

•

White Papers• XenDesktop Design for 10,000 Users (CTX121478)

• XenDesktop Design Handbook (CTX120760)

• Migrating Users from Physical Workstations toXenDesktop (CTX122044)

•Community• Citrix Community: http://community.citrix.com

• My Blogs: http://community.citrix.com/blogs/citrite/danielf

• Follow me on Twitter: http://www.twitter.com/djfeller

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