From virtualization to cloud Data Center (1)

Overnight, the IT industry seems to have achieved a leap: From virtualization to the cloud computing realm, we have always seen the blue giant of IBM in this evolution, from the industry's first application virtualization mainframe, to the current IBM has the most complete and advanced virtualization solutions in the field of virtualization, from hardware virtualization to virtualization software and management, to the next generation of data centers, even based on the virtualized cloud computing infrastructure, IBM has been leading the way in helping enterprises integrate resources, manage workloads, automate processes, and optimize service delivery capabilities.

　First virtualization System

As you may know, virtualization originated from the mainframe and originated from the requirements for time-sharing systems. At the International Information Department conference in 1959, a piece of paper titled "Time Sharing in large-sized high-speed computers" was considered as the earliest exposition of virtualization technology. In the 1960s S, "virtualization" was created and used as a term so far. At that time, virtualization was a virtual machine (also known as a pseudo machine), which was used to describe the creation of a virtual machine (also known as a pseudo machine) on the IBM M44/44X system ). At that time, virtual machines were called virtualization platforms, or more people called server virtualization.

First virtualization system: IBM M44/44X is the first virtualization System in IT history, an experimental computer system designed and operated by Thomas J Watson research center in the highlands of the town of silicon, New York. It is based on IBM's 7044 ('m44'), simulating multiple 7044 virtual machines-that is, '44x '. IBM M44/44X is a ground-breaking machine used to explore paging, virtual machine concepts, and computer performance measurements.

From 1967 to 1972, Full virtualization has become a reality. Another IBM research system CP-40 presented for the first time and demonstrated that its CP/CMS operating system's control program could be fully virtualized. Through Distributed Open Source System, CP-40 can provide a simulated, independent computer for each CP/CMS user. From this point on, IBM's Virtual Machine family has been moving forward steadily. Each such virtual machine has the complete basic functions of the computer, and the Virtual Machine (and its users) cannot distinguish from the personal system. As a result, a CP-40 can be reused by multiple users at the same time, allowing users to run multiple operating systems on one host to make full use of expensive mainframe resources as much as possible.

Full virtualization makes it possible to integrate hardware and software. This step is still taken by IBM. In 1972, IBM added the virtual memory function of System hardware on the basis of the famous System/360, this is IBM System/370. Then, the VM continues to develop. Today, you can find the VM on the System z9 host, and it is even backward compatible with System/360.