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Cloud storage allows you to save data and files in an off-site location that you access either through the public internet or a dedicated private network connection. Data that you…

Platform as a service (PaaS) is a cloud computing offering that provides users with a cloud environment in which they can develop, manage and deliver applications. In addition to storage and other…

Infrastructure as a service (IaaS) is a form of cloud computing that provides virtualized computing resources over the internet. IaaS is one of the three main categories of cloud computing services, alongside software…

The terms private cloud and virtualization are often used as synonyms. Many companies take the approach that, if they have virtualized their computing resources, they have implemented a private cloud. The value of virtualization: Virtualization…

A private cloud is a software-defined data center that combines essential hardware and other computing resources into a unified virtualized unit A private cloud’s layer of hardware and networking abstraction – again, provided by software –…

A physical cluster is a collection of servers (physical machines) interconnected by a physical network such as a LAN. In Chapter 2, we studied various clustering techniques on physical machines. Here, we…

I/O virtualization involves managing the routing of I/O requests between virtual devices and the shared physical hardware. At the time of this writing, there are three ways to implement I/O…

 Virtual memory virtualization is similar to the virtual memory support provided by modern operating systems. In a traditional execution environment, the operating system maintains mappings of virtual memory to machine memory using page tables,…

A VM is a duplicate of an existing computer system in which a majority of the VM instructions are executed on the host processor in native mode. Thus, unprivileged instructions…

In general, there are three typical classes of VM architecture. Figure 3.1 showed the architectures of a machine before and after virtualization. Before virtualization, the operating system manages the hardware.…