Virtualization Beyond Servers: Delivering a New Desktop and Application Deployment Strategy • "Copyright Steve Sears, 2011.

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Transcript Virtualization Beyond Servers: Delivering a New Desktop and Application Deployment Strategy • "Copyright Steve Sears, 2011.

Virtualization Beyond Servers:
Delivering a New Desktop and
Application Deployment Strategy
"Copyright Steve Sears, 2011. This work is the intellectual property of the author.
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November 6, 2015
• Large academic medical institution in Baltimore, MD
• Decentralized, with 40-50% consolidation, more on
the medical side
• New Clinical Towers – opening April 2012 – replaces
most of the current hospital, $1B construction effort,
“hospital of the future”
• Widespread deployment of full clinical documentation
• Academic mission – residents, nursing & medical
students – built into clinical mission
• Highly mobile workforce inside the buildings and units
– even if mobility means walking around each unit
November 6, 2015
Convergence of Opportunities
• New hospital planning process – unique opportunity to
reconnect about technology futures with nearly everyone
• Mature server virtualization and storage practice, ‘completed’
server virtualization in March 2009
• Deployment of clinical documentation – people spend 3 times
more time interacting with a computer – paperless environment
• New devices (remember netbooks, now iPads)
• Available budget through fleet replacement and new hospital
• Initial demos of virtual desktop met with huge positive response
• Challenge: Could we do this at scale, in 2 years, while the
products matured and our organization adapted?
November 6, 2015
Why were people so excited
• Simple ways to ‘drag’ a desktop session anywhere provided a
very positive, easy to grasp demo
• Drives device independence, easy, secure remote access
• Finally a full, personal desktop with network storage for nurses,
• Faculty – Office and clinical environments converge
• Real engagement from IT folks – not just problem management
• Addressed session loss issue with certain apps on wireless
• Plus SSO and Tap and Go technologies added to the ‘complete
November 6, 2015
Organizational Setting
• Organization had storage, client and virtualization
practices in one place
• Built a small team of VDI user support folks
– Focus on training, adoption, outreach, rounding, technology
• Integrated team of engineers
– Different specialties (storage, server, desktop, imaging,
patch management) – takes lots of care and feeding
• App team buy-in was critical, took some time
• Now, there is a Cloud & Virtualization team for the
background technologies and strategy
November 6, 2015
Launched View 3.0 into production June 2009
Currently – VMWare View 4.6
Next gen efforts starting in Fall, 2011
Continue to push scalability – not just
underlying technology, but…
– Support processes
– Provisioning processes
– Organizational readiness
November 6, 2015
1st Generation Platform
• Full desktops for each person – 175-200 per
server (Nehalem technology, 144GB RAM)
• Use Netapp storage array for de-duplication
(75%), 20GB virtual desktops
• Windows XP, Office, Outlook, clinical apps,
push additional apps as needed
• H: drives (big deal for nurses, residents)
• Single Sign On
• USB pass through working well
November 6, 2015
November 6, 2015
Integrated Provisioning
• Create a virtual workspace, pre-enabled with access
to all key services
Windows desktop
Apps installed
Access to file shares, email, instant msg
SSO enabled
Pre-provisioned inside applications
Proper unit assignment – detect unit changes, address roaming
• Example: Nightingale / VDI integration
• Device naming
– pass actual room number/location to applications for fine-tuned
context management
November 6, 2015
November 6, 2015
Technology Challenges
• Storage – For full desktops – IOPS must be
managed very carefully – easy to overwhelm
ANY storage array without carefully
managing updates, software pushes, reboots
• Very familiar technologies – remote desktop,
hypervisor, SAN – but integration ‘at scale’
still maturing
• Plan to do major upgrades every year
November 6, 2015
Virtual Desktop Counts &
November 6, 2015
Next Generation – 2nd Wave
•Larger scale -20K
•More use cases – labs, classrooms, mass
audience, niche apps & uses
•Windows 7
•Abstract OS, Persona, Apps
•Less or no reliance on SAN for OS
•Most recently updated OS upon reboot/login
•Automated / Self Service Provisioning
1st Generation
•Large scale (10K)– but focused on clinical settings
•Focus on user experience, workflow enhancements, adoption
•Timeline tied to New Hospital
•Belt & Suspenders – safety 1st
•Traditional Patch Mgmt / Updates
•Batch Automated Provisioning
•Organizational Change
•Technology Maturity
6, 2015 areas
•Small pilots
in non-clinical
Is there an ROI????
Acquisition costs similar to legacy PC
Labor investment substantial, but we
transformed from within
Fleet and new hospital budget provided a
No discernible labor dividend yet, but we
are seeing reduced issues with VDI
“Upping our game” on basic XP alerts and
Much more flexible platform for customers
Much better security and flexibility for IT
Building a chargeback model for the rest
of the user community
Costs no higher – but it’s a better solution
on many fronts for many people
Concurrent licenses in clinical setting
‘stretch’ 3:1 on average
November 6, 2015
* License amortized over 4 years including support
Interesting Use Cases
• Medical/Nursing Students – bridges gaps between
their clinical and academic experience – follow
through entire career
• Training rooms – good place to introduce change,
save funding, reduce management costs
• Isolated or special purpose pools of test machines
– App testing
– malware analysis
• Mobile services – rehab, child life, social work,
pharmacists – totally portable experience, using any
open device on a unit
November 6, 2015
Johns Hopkins then ….
and now…
November 6, 2015
November 6, 2015
Netbooks – at the time
• Supported using a stripped down image with Windows XP,
browser and a virtual desktop client
• Not enough processing power for local install of full suite of
enterprise applications
• But… decent platform for virtual desktop, browsing
• Provides a manageable, affordable solution for clinical laptops
• More secure – no local data, apps
• Fast forward one year – moderate niche usage – fills a gap
• Netbooks, better wireless carts and IT staff engagement
signalled a new, tangible, positive engagement around the more
abstract concept of virtual desktop…. It was our “in”…
November 6, 2015
Basic View…
November 6, 2015
Virtual Desktop Architecture
Dynamic Location Monitoring
• Conceptual Goal:
Map based console built against actual floorplans
Each network connected device show in actual location
Up/Down, Key Services tracked
Possibility of linking with RFID
Can be linked to server availability, network availability
• Builds on existing technologies (SCOM for desktops)
• Proof of concept – Spring 2010
November 6, 2015
Application Integration
• Need extended application roadmaps
2 or more years for all key apps
Hardware, memory requirements
Interoperability requirements (.NET, Java, IE, OS, hardware)
Rollout plans, hardware budgets
Need more joint testing opportunities
• Need bug fixes, technology improvements – not just
functional improvements
Inefficient memory usage
Ill-behaved without wrapping in virtual ‘bubble wrap’
Hardware contention
Often tied to a specific hardware device
November 6, 2015