Development and Evaluation of a Virtual PC Type Thin Client System - Data Management in Cloud, Grid and P2P Systems - page 115

Tabl e 1. Explanation of Each Server in Fig. 2

Server Name Function
Storage Mgmt. Server Manages storage
File Server Stores personal data such as the desktop information for every user
Deploy Server Deploys the virtual desktop and links with the user
Security Server Manages security patches
Anti-Virus Server Collectively manages anti-virus software
Web Server for Operation Web page on the virtual PC system
Audit Server Manages audits and settings of the virtual PC
Auth. Server Manages user account info and rights
VirtualDesktopMgmt.ServerManages hypervisor and virtual desktop
License Server Manages licenses

Scan Def. Server Maintains the cash information of the virus scan

Monitor Server Automatically monitors event viewer information of the server

Job Mgmt. Server Provides automation functions for the server maintenance

Login Server Provides functions for logging in to a virtual desktop

Tabl e 2. UserLoginProcedureinFig.2

(1) Login Request Connect by using the connection software of the PC
(2) Account Notification Send LDAP information
(3) Authentication Authenticate by using LDAP information.

(4) License Check Check the number of virtual desktop connections

(5) Connect Request Request connection to an applicable virtual desktop

(6) Power Control Confirm the state of the connection and switch it to “on” if cut off

(7) Connect Send LDAP and digital certificate and connect

Processing Flow at Time of Deployment. We show the processing flows of
initialization after having deployed a virtual desktop. We show the flow of the
virtual desktop at the time of deployment in figure 4.
First, the deploy management server transmits deploy instructions (datastore
information and host name set beforehand) to a deploy server depending on
the instructions of the operator. The deploy server carries out deployment on
the basis of the datastore information and the host name included in the deploy
instructions. The hypervisor deploys a virtual desktop in an appointed datastore
and host name and outputs a deploy result to the deploy server. The host name
and physical address of the virtual desktop that was deployed are included in
this deploy result. The deploy server keeps it as a deploy result.
Then, the deploy management server transmits the host name to a deploy
server and acquires the physical address of the virtual desktop that got the
correspondence in a host name. The deploy management server keeps a physical
address with the host name.
The deployed virtual desktop starts by following the start instructions from
the hypervisor and acquires the temporary IP address from a DHCP server.
The virtual desktop transmits its own physical address to a deploy management
server and acquires the setting information (host name, fixed IP address, the
license keys of the operating system, etc.) afterwards. The virtual desktop sets
those pieces of information and reboots.