Partial Virtualization–In this type of hardware virtualization, the software may need modification to run. Client Virtualization:This type of technology makes the system administrator to virtually monitor and update the client machines like laptops, workstation desktop and mobile devices. It improves the client machines management and enhances the security to defend from hackers and cybercriminals. There are three types of client virtualization . First, server hosted or remote virtualization which is hosted on a server machine and operated by the client across a network. Second, local or client hosted virtualization in which the secured and virtualized operating environment runs on local machine. Third, application virtualization  that provides multiple ways to run an application which is not in traditional manner. In this technique an isolated virtualized environment or partitioning technique is used to run an application. Storage Virtualization:This type of virtualization creates the abstraction of logical storage from physical storage. Three kinds of data storage are used in virtualization, these include, DAS (Direct Attached Storage), NAS (Network Attached Storage) and SAN (Storage Area Network). Direct Attached Storage (DAS) is the traditional method of data storage where storage drives are directly attached to server machine. NAS is the shared storage mechanism which connects through network. The Network Attached Storage (NAS) is used for device sharing, file sharing and backup storing among machines. Storage Area Network (SAN) is a storage device which is shared with different servers over a high accelerate network. Here many network storage resources are present as a single storage device for easier and more efficient management of these resources. It provides various advantages as follows: Improved storage management in a heterogeneous IT environment Easy updates, better availability Reduced downtime Better storage utilization Automated management In general, there are two types of storage virtualization: Block-It works before the file system exists. It replaces controllers and takes over at the disk level. File-The server that uses the storage must have software installed on it in order to enable file-level usage. Other types of virtualization may include the following as well: VII. NETWORK VIRTUALIZATION It refers to the management and monitoring of a computer network as a single managerial entity from a single software-based administrator’s console. It is intended to allow network optimization of data transfer rates, scalability, reliability, flexibility, and security. It also automates many network administrative tasks. Network virtualization is specifically useful for networks that experience a huge, rapid, and unpredictable traffic increase.
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- Winter '19
- DR. Tesfa
- virtual machine, Virtualization software