Host’ operating system – this is the operating system of the physical computer on which the virtualisation software is running.‘Guest’ operating system – the operating system running inside the virtual machine. Guest o/s support lists generally indicate operating systems for which the virtualisation software has been optimised and for which driver support is available for the emulated hardware within the virtual machine.Paravirtualization is where the guest operating systems run on the hypervisor, allowing for higher performance and efficiency. Examples of paravirtualization are Microsoft Hyper-V and VMware ESX Server.Native virtualization (or full virtualization) is where a type-2 hypervisor is used to partially allow access to the hardware and partially to simulate hardware in order to allow you to load a full operating system. This is used by emulation packages like VMware Server, Workstation, Virtual PC, and Virtual Server
A smart terminal is a minimal computer equipped with a minimal operating system. A smart terminal has limited processing power because its entire job is to connect you to a remote server system. Smart terminals connect to Terminal Servers by some protocol—Citrix ICA, RDP, VNC, XDMCP, and the like. Users, after authentication These devices have a small set of utilities embedded in them so that they can be configured locally, remotely, via aweb browser, or some other proprietary provisioning software.After the terminal is provisioned or configured, the user is automatically directed to the appropriate server when the unit is powered on. These devices are generally single-homed (configured for a single Terminal Server), unlike the smartterminals that can connect to a user-selectable array of available resources.
icloudCloudOS from Xcerion (www.icloud.com.)StartForce Online Desktop (www.StartFroce.com)
running locally, the resources that normally would be installed into the OS, such as dynamic linked libraries (DLL), code frameworks, control panels, and registry entries are installed into an application container and the entire container is streamed.
For example, if you create VLAN 10 in your switch and assign the IP address range of 192.168.1.0/24, any host that you place into that network range will be a member of VLAN 10.
Network-based storage is storage that is not local to any one server but spread throughout a network in the form of disk arrays, tape libraries, optical disk arrays, and various types of network attached storage devices.The VSAN enables SAN managers to administer SANs with greater efficiency because the VSAN removes the location issue from the SANIt also allows maintenance to occur without interruption—for example, by replacing, adding, or removing storage devices without bringing an entire SAN down to do so.
Consequently, as you move forward with virtualization software,the perhaps unexpected effect is that your hardware environmentbecomes more important.
Among the leading business challenges confronting CIOsand IT managers today are: • cost-effective utilization of IT infrastructure, • responsiveness in supporting new business initiatives, • flexibility in adapting to organizational changes,Virtualization is a fundamental technologicalinnovation that allows skilled IT managers todeploy creative solutions to such businesschallenges. 3
virtualization refers to physical abstractionof computing resourcesthe physical resources allocated to a VM areabstracted from their physical equivalents virtual Virtual network virtual virtual disks interface CPUs memory cards all map to physical resources on a physical computer system. 4
Today, many data centers have machines running at only 10 or 15 percent of total processing capacity. 85 or 90 percent of the machine’s power is unused EnergyMoney Places consumed Time 6
With virtualization you’ll save significant money on hardware,power, and possibly IT staff. the practical aspect of virtualization: • Minimize hardware costs • Provide disaster recovery • Consolidate idle workloads • Balance loads • Test software • Centralize server management • Conserve power • Deploy servers faster 7
Virtual server (system) is like a physical server, isdedicated to a job or jobs for which it is designed. Configuring a virtual server is much the same asconfiguring a physical dedicated server. Installation security software software server patches updates updates 12
Desktop virtualization is moving a desktop operatingsystem from local hardware to a remote serversystem.remote desktop is accessed by using somelightweight client in the form of a small or minimaloperating system Smart Dumb Terminal Terminal 14
The newest entry into the desktop Hosted Web virtualization world. You can access yourDesktop Systems desktop from anywhere with a web browser. Application virtualization can improve portability, manageability, and compatibility of an application 15
Applications installed and used on remote serverVirtualization systems through a browser or specialized client.Applications Word processing, databases, customer relationship management (CRM). 16
VPNs are still the accepted method toVIRTUAL PRIVATE connect remote users and remote offices NETWORK to a central office network because they (VPN) are secure and efficient.There are several ways to implement a VPN service for a network Hardware Software VPN VPN solution solution 18
Virtual Local Area VLANs are used on larger networks to Network segment, or isolate, traffic into separate (VLAN) broadcast domainsVLANs are usually created using intelligent switches, but you can also create them with: Standard VMware VLAN VLAN 19
Server-based storage is traditional file server storage where you are connected permanently to a server that shares its local disks to users for file storage SAN AND VSAN Data NAS•Storage area networking Transportation Network attached storage•Virtual Storage areanetworking 20
Installing Virtual Machine : Vmware Workstation Installing Linux and Windows Xp Set up Web server Apache on every machine Testing the connectivity to these serversImplement Load Balancing solution with pound 22
Even though virtualization is a softwaretechnology, it has the effect of makinghardware more important. removing lots of servers migrating their operating systems to virtual machines Hardware environment becomes more important. 23