Case1

CASE 1 1. Explain the difference between the three types of server practical(prenominal)ization using the first video. 1) Virtualization virtualization uses a special kind of packet c entirelyed a hypervisor. The hypervisor interacts instantly with the animal(prenominal) servers CPU and disk space. It serves as a platform for the virtual servers direct dodgings. The hypervisor keeps each virtual server tout ensemble independent and unaw are of the other virtual servers running on the somatogenic machine.Each invitee server runs on its own OS even remove bingle guest running on Linux and another on Windows. The hypervisor monitors the somatogenetic servers resources. As virtual servers run applications, the hypervisor relays resources from the physical machine to the appropriate virtual server. Hypervisors have their own processing needs, which mean that the physical server moldiness reserve some processing power and resources to run the hypervisor application. This can concussion overall server performance and slow cut back applications. ) Para-virtualization Para-virtualization approach is a little different. Unlike the full virtualization technique, the guest servers in a Para-virtualization frame are aware of one another. A Para-virtualization hypervisor doesnt need as such(prenominal) processing power to manage the guest operating systems, because each OS is already aware of the demands the other operating systems are placing on the physical server. The entire system works together as a glutinous unit. 3) OS-level virtualization OS-level virtualization approach doesnt use a hypervisor at all.Instead, the virtualization capability is part of the military OS, which performs all the functions of a fully virtualized hypervisor. The biggest limitation of this approach is that all the guest servers must run the same OS. Each virtual server ashes independent from all the others, but you cant mix and match operating systems among them. Because all the guest operating systems must be the same, this is called a homogeneous milieu. 2. why is virtualization important to a high society like Hudsons Bay fellowship? How did that factor into their decision to partner with IBM?For this compevery, they have lots of contact directly with their node that they need to have great efficiency to serve their customer and did a right statistic and accurate record to establish their information system to see how to make them better. Virtualization can help them realize the capacity, delivered as prognosticate and decline the timing when they are planning. For example, they want to create an image that at a measure might take an hour, but after, it takes only in minutes. It helps them save time that adds more efficiency for them.About their decision to partner with IBM, IBM led to industry that they imagine it will be an innovation and useful for their company operating to abet with them and it will also benefit in both of them. 3. What kind of companies are promising to use a storage area web (SAN)? The company which has massive information to flow in and out will likely to use SAN thats because it will protect the information from the suddenly depressed of computer, and company still can use the information they want on the Cloud. A storage area network (SAN) is a dedicated network that provides access to consolidated, block level data storage.SANs are primarily use to make storage devices, such as disk arrays, tape libraries, and visual jukeboxes, accessible to servers so that the devices appear like locally attached devices to the operating system. A SAN typically has its own network of storage devices that are loosely not accessible through the local area network by other devices. The cost and complexity of SANs dropped in the early 2000s to levels allowing wider adoption crossways both enterprise and small to medium sized business environments. A SAN does not provide shoot down abstraction, only bl ock-level operations.However, file systems built on top of SANs do provide file-level access, and are known as SAN file systems or shared disk file systems. 4. Can you think of any risks involved in virtualization? Although, virtualization emphasize the efficiency of minimize the risk that they grow the security by centralized IT management, slowly update service packs& patches and easily restore servers. Once, it was really damage and lost any control, it might be totally break down, because such as all of the desktop are manage by one central sever.If the information are ascent it once, it would happened at the same way because centralize all the things in one place, and it would be the risk that we have think about it. 5. Explain why virtualization is considered a green technology. Virtualization can improve the percentage of resources using, increase the tractableness of IT, decrease the systems operation time, help to cut down the human resources to manage and achieve the f unction of environment protecting of parsimoniousness energy and reduce carbon dioxide.Green technology, also called environment technology, is an application of environment science to sustain the natural environment and to reduce the negative personal effects from human activities. Sustainable development is the core goal of green technology. Because virtualization allow many companies to reduce the wasting of hardware and the environment impact from those companies. So we think virtualization is such a kind of green technology.