Host-based Virtual machine method user access an individual VM that is hosted data center. In this type of desktop virtualization, multiple virtual machines are created on centralized remote server so user’s data generally resides on remote server and resource allocation can be done as per the user requirement. Users can access their desktop from variety of physical machines and location but to access this type of desktop, user’s connection should be always enabled with server. This technique is used for managing a large number of virtual machine because configuration and management are performed on centralized server.
Virtual desktop infrastructure (VDI) is the best example of host-based form. It has been discussed below.Virtual desktop infrastructure is a one of the desktop virtualization technology, which refers to the use of host-based form VMS to deliver a virtual desktop. All desktop OS are hosted on a centralized remote server in a data center and user is given an access on basis of their requirements. In case of VDI each user has his individual virtual machine but then it requires each virtual desktop should have its own storage processor and memory.
VDI has several advantages like there is better management as all the desktop instances are at one central location. One can update patches or software without accessing the client desktop even once. Similar to server virtualization in case of VDI also when one server fails it is possible to move machines across multiple hosts. VDI is the infrastructure that makes the delivery of virtual machine possible.
There are misapprehension and confusion regarding VDI that it is a type of desktop virtualization but practically it is not. One can also assume VDI is a process of desktop delivery rather than associating it with any brand or type of desktop virtualization. Also, VDI is a universal reference to desktop virtualization but we cannot associate it with a particular vendor.