Virtualization Essentials Quotes

“In the early days of the personal computer, there were many choices of operating system; today, there are many solutions available to choose from for a virtualization strategy.”
― Matthew Portnoy, Virtualization Essentials

“Because the health and well-being of these applications directly affect a company’s profitability, administrator and application owners are hesitant to make changes to a time-proven environment or methodology, even if it has flaws. But after working with virtualized servers in test, development, and QA environments, they are comfortable enough to virtualize these remaining workloads.”
― Matthew Portnoy, Virtualization Essentials

“requirement on the day the server was purchased; it was purchased based on the company’s projected need for the future and for emergencies.”
― Matthew Portnoy, Virtualization Essentials

“The model and size of the server was determined with help from an application vendor who provided a recommended configuration based on the company’s specific need. That need was not the company’s”
― Matthew Portnoy, Virtualization Essentials

“Companies usually adopt virtualization-first policies, which state that as new projects come in house, any server requirements will be satisfied by the virtual resources, rather than by paying for new physical resources. Actual hardware will be purchased only if it can be proven that the need cannot be satisfied with the virtual environment.”
― Matthew Portnoy, Virtualization Essentials

“IDC reported that in 2009, more virtual servers were deployed than physical servers. They predicted that while physical server deployment would remain relatively static over the following five years, virtual machine deployment would double the physical deployments at the end of that span.”
― Matthew Portnoy, Virtualization Essentials

“As companies began to see the benefits of virtualization, they no longer purchased new hardware when their leases were over, or if they owned the equipment, when their hardware maintenance licenses expired. Instead, they virtualized those server workloads. This is called containment. Containment benefited corporations in multiple ways. They no longer had to refresh large amounts of hardware year after year; and all the costs of managing and maintaining those servers—power, cooling, etc.—were removed from their bottom line from that time on.”
― Matthew Portnoy, Virtualization Essentials

“This condensing of servers is called consolidation, as illustrated in Figure 1.3. A measure of consolidation is called the consolidation ratio and is calculated by counting the number of VMs on a server—for example, a server that has eight VMs running on it has a consolidation ratio of 8:1. Consolidation was a boon to beleaguered data centers and operations managers because it solved”
― Matthew Portnoy, Virtualization Essentials

“Between the late 1970s and mid-1980s there were more than 70 different personal computer operating systems.”
― Matthew Portnoy, Virtualization Essentials

“done on IBM mainframes in the 1960s, but Gerald J. Popek and Robert P. Goldberg codified the framework that describes the requirements for a computer system to support virtualization. Their 1974 article “Formal Requirements for Virtualizable Third Generation Architectures” describes the roles and properties of virtual machines and virtual machine monitors that we still use today.”
― Matthew Portnoy, Virtualization Essentials

“Virtualization in computing often refers to the abstraction of some physical component into a logical object. By virtualizing an object, you can obtain some greater measure of utility from the resource the object provides. For example, Virtual LANs (local area networks), or VLANs, provide greater network performance and improved manageability by being separated from the physical hardware.”
― Matthew Portnoy, Virtualization Essentials

“To understand why virtualization has had such a profound effect on today’s computing environment, you need to have a better understanding of what has gone on in the past.”
― Matthew Portnoy, Virtualization Essentials

“Software vendors are building new applications specifically for these new architectures. Third parties are creating tools to monitor and manage these applications and infrastructure areas. As cloud computing begins to become the de facto model for development, deployment, and maintaining application services, this area will expand even further.”
― Matthew Portnoy, Virtualization Essentials