1. Use Case #1: Mobile Virtual Desktop
Song Woo Sok, ETRI
Sun Wook Kim, ETRI Final Review Meeting October 10, Seoul

2. BASMATI Final Review meeting
Outline
VDI Overview
Analysis of VDI limitations for MVD
MVD Overview
Enabling Technologies for MVD Service
Challenges for MVD Use case
Solutions Provided by BASMATI
Contribution of BASMATI Components
Demo of MVD Use case
Evaluation results
The presentation consists of following contents.
First, I will introduce a Virtual Desktop Service and limitations of VDI. Second, I will talk about the mobile virtual desktop service on federated clouds. Also, I will explain our solutions and contribution for MVD Service by BASMATI
And lastly, I'll show the demonstration and evaluation results of MVD service by BASMATI
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3. Architecture of VDI Service
VDI (Virtual Desktop Infrastructure) Overview
VDI provides the virtual desktops to users as a service in the single cloud environment.
Enables the users to access their virtual desktop anywhere and anytime
Hosting a desktop operating system within a virtual machine running on a centralized server(Bare metal server).
Three core entities: (i) the VDI client, (ii) the VDI server,(iii) the VDI center
First of all, I'd like to talk about overview of cloud-based virtual desktop service.
This slide shows the definition of desktop virtualization and architecture of VDI.
As you know, VDI stands for Virtual Desktop Infrastructure.
It virtualizes desktop computers and these virtual desktop environments are "served" to users on the network.
The VDI server is based on a bare metal server. The vdi consist of the VDI-Client, VDI-server, vdi-center
Architecture of VDI Service
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4. BASMATI Final Review meeting
Analysis of VDI limitations for MVD
Existing VDI service is deployed on bare-metal server
Difficult to manage and change the deployment status
Hard to scale up/down to keep up with users’ requirements
But VDI has some limitations for providing virtual desktop service based on federated clouds
The vdi service is deployed on bare-metal server, but most Cloud service provider provides the virtual server, not bare-metal server. So, It is difficult to manage its deployment
And, If a user travels to distant location, the user experience will be degraded because of longer response time
To solve this problems,
It should exploit virtual resources of cloud services around the world
Then, the user virtual desktop should be run on the resources near the user’s location.
Solution
Use virtual resources of cloud services around the world
Migrate MVD instances to near the user
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5. BASMATI Final Review meeting
MVD (Mobile Virtual Desktop) Overview
MVD service provides virtual desktop service guaranteeing stable QoS to moving users with the federated cloud resources
This is the concept and service flow of MVD service based on federated clouds
MVD exploits multiple clouds’ virtual resources to migrate user’s virtual desktop instance to near the user’s location.
Service flow of MVD
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6. MVD Service Infrastructure with BASMATI platform
MVD Service Components
MVD service consists of three kinds of components
A connection manager
Multiple VDI Hosts running on different clouds
MVD client
MVD service consists of three components. It follows as MVD- connection manager, MVD-server based on VM and MVD- Client
BASMATI provide virtual resources to MVD server
MVD Service Infrastructure with BASMATI platform
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7. Enabling Technologies for MVD Service #1
Exploiting Virtual Resources
Installing MVD packages in the Host VM, instead of the bare metal server
Nested Virtualization
Enables executing virtualization within virtualized resources
This slied shows the service server architecture of MVD use case.
The Nested virtualization is the act of running a hypervisor inside a virtual machine.
Nested virtualization can be useful for running multiple hypervisors on the same host server
So, we use the Nested-KVM technology to support MVD service on federated clouds and service migration,.
We install the our service SW for MVD in Host VM instead of the bare metal server
The old MVD Server Architecture
MVD Service Server Architecture based on the nested virtualization
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8. MVD migration based on nested virtualization
Enabling Technologies for MVD Service #2
MVD migration technology
Creating VM images based on backing image and recording changes as overlay images
Moving only overlay images between Hosts to migrate VMs
MVD client application for android and iOS
This slied shows the MVD migration technology based on virtual resources.
To support migration of MVD, we create the user’s virtual desktop based backing image and record the changes as overlay images
Also, we develop the MVD mobile apps based on android and iOS for supporting various terminal
MVD migration based on nested virtualization
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9. Connection Manager of MVD with BASMATI
Enabling Technologies for MVD Service #3
MVD Connection Manager
Service authentication and Hosts management
Keeps tracking the connection information of user VDIs
Connects user to his/her VDI instance wherever it is
Also, we modify the service flow and develop the connection manager to support MVD service based on nested virtualization.
This connection manager provides the user and admin portal to manage the user information for service authentication and migration
The admin portal provide the status of MVD in each public clouds and logging information of MVD by users.
The user portal provide the connection management between MVD and Users.
If user want to move user’s MVD service region, user can select the region to be moved by user portal.
Connection Manager of MVD with BASMATI
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10. BASMATI Final Review meeting
Requirements of MVD Use Case
Minimizing response time
MVD experience is heavily affected by response delay for user interactions.
Optimizing costs
Without compromising user experience, the operational costs should be reduced.
Satisfying specific H/W requirements
Since it uses nested virtualization, it should be provided with special type of resources which supports the technology.
This slide shows the requirements of MVD use case on federated clouds
To provide the best mvd user experience, we must consider minimizing response time of user interactions.
Also, mvd service require the optimizing cost and specific HW features.
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11. BASMATI Final Review meeting
Challenges for MVD Use Case
Minimizing response time
The Hosts should be deployed on virtual resources of ①different CSPs on different regions.
Then the user VDI can be moved among the regions through MVD migration technology.
Optimizing costs
The amount of resources should be ②varied dynamically to keep up with users’ requests
To do that, the ③deployment procedures should be automated.
Satisfying specific H/W requirements
Virtual resources supporting ④nested virtualization should be identified and assigned automatically
To minimize response time,
The Hosts should be deployed on virtual resources of different CSPs on different regions depending on user’s location.
Also, To optimize the cost and satisfy hw features, the virtual resources should be identified and deployed automatically.
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12. BASMATI Final Review meeting
Solutions for MVD provided by BASMATI #1
①different CSPs on different regions
MVD app is divided into multiple BEAM documents
A BEAM for Connection Manager
Multiple BEAMs for each region’s MVD Hosts
Can be managed region by region
Manageable, Scalable and
To provide the solutions for MVD by BASMATI, we define the multiple BEAM documents for MVD.
One is the a BEAM for Connection Manager, the others are Multiple BEAMs for each region’s MVD Hosts.
To support scale-up and down of MVD service infrastructure, BASMATI supports replication of resources with scalability engine feature.
②varied dynamically
BASMATI supports replication of resources with scalability engine feature
All Hosts have a scalability engine
scaleup/scaledown API is provided to change the amount of deployed resources
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13. BASMATI Final Review meeting
Solutions for MVD provided by BASMATI #2
③automated deployment
BEAM supports initial scripts
All required files should be accessible through internet
BASMATI will execute the initial scripts when the resource is allocated
Also, To support the automated deployment, we define the initial scripts for MVD and BASMATI will execute the initial scripts when the resource is allocated.
BASMATI identifies the fields and recommends fit resources for nested virtualization based on BEAM
④nested virtualization
BEAM supports specific requirements fields.
BASMATI identifies the fields and recommends fit resources.
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14. BASMATI Final Review meeting
Contribution of BASMATI Components for MVD Use Case #1
BEAM (BASMATI Enhanced Application Model)
Providing the way to describe application includes its structure and requirements
Decision Maker with Business Logic
Generating optimal Deployment plans
SLA Management
Detecting SLA Violation and reflecting to future resource selections
Resource Broker
Selecting best-fit candidates among currently available resources
Controlling the priorities of the candidates based on fast records about SLA violation
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15. BASMATI Final Review meeting
Contribution of BASMATI Components for MVD Use Case #2
Application repository
Storing BEAMs, Deployment plans, Deployment status and
application-specific files
Application Controller
Managing deployment status of MVD application
Federation Monitoring
Collecting resources’ status and detecting violations
Cloud Management Platform
Managing multiple CSPs across multiple regions
Enabling deployment process of MVD application
BASMATI Workspace
Providing user interface to manage Application’s BEAM and deployment, and status of deployed resources.
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16. BASMATI Final Review meeting
MVD use case Demonstration Flow
Manage all CSPs, Applications, Services
BASMATI Platform
BASMATI Admin
BASMATI Workspace
Manage own Applications, Services
Deploy and Manage MVD Application
MVD Admin
MVD Service
Manage MVD Service infrastructure
MVD Workspace
Manage own MVD instances
MVD Users
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17. BASMATI Final Review meeting
Evaluation methods
Interviews
Automated tests and manual tests
Performance measurements
Monitoring metrics
Component level evaluation
Added value
Technical aspects evaluation
Mapping and fulfillment of project objectives
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18. BASMATI Final Review meeting
Evaluation criteria
Functional suitability
Functional completeness
Functional correctness
Performance
Time behavior
Resource utilization
Compatibility
Interoperability
Modularity
Adaptability
Usability
Recognizability
Lernability
Operability
User error protection
User interfacce design
Reliability
Availability
Monitoring
Fault tolerance
Recoverability
Security
Data storage
Data transport
System administration
Maintainability
Analysability
Modifiability
Testability
Installability
Overall
Documentation
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19. BASMATI Final Review meeting
Evaluation results
Functional suitability: very good
Performance: good
VM allocation and service installation < 5 minutes.
Installation procedure includes downloading a 15GB-size file – it took much time.
Scaling Up MVD Host < 5 minutes.
Compatibility: No restriction
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20. BASMATI Final Review meeting
Evaluation results
Usability: Some pre-knowledge is needed to use BASMATI and BEAM correctly, The UI can be improved
Reliability: excellent
Almost 100% available during the pilot service
Security: System access are restricted to registered users. For communication, SSH protection is used.
Maintainability: good
Overall
Ease of use: required some domain knowledges
Usefulness: Very useful
Documentation: Available
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21. BASMATI Final Review meeting
Evaluation results
Overall the use case development, deployment and operation with BASMATI was very efficient and reliable.
Support from BASMATI partners was needed to understand how to use the platform. After we used to the platform, we could easily create and manages applications on it.
Some graphical interfaces could be improved but all the functions were working properly.
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22. BASMATI Final Review meeting
Acknowledgements:
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no and from ICT R&D program of Korean Ministry of Science, ICT and Future Planning no. R
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