hardware - based virtualization
virtualization, this was first implemented in 1967 on an IBM System 360/67 mainframe.
Yes, it is legal to use virtual machines for running multiple operating systems on a single physical computer.
It helps to think of the JVM as a "virtual processor"; instead of compiling a program for a specific real processor, the Java compiler compiles for this virtual processor. The advantage of doing so is that, even though the program ultimately runs on different machines (different processor types), it only needs to be compiled only once.
When building a workstation for running multiple virtual machines, two critical factors are CPU power and RAM capacity. A multi-core processor enables efficient multitasking and better performance across VMs, while ample RAM ensures that each virtual machine has enough memory to operate smoothly without causing slowdowns. Additionally, sufficient storage speed and capacity can enhance performance and support the demands of multiple operating systems.
The consideration that would be of the greatest importance when building a workstation that will run multiple virtual machines would be the number of CPU cores. The other would be the amount of RAM.
Virtual server hardware is used to facilitate in the creation of virtual machines. Virtual machines execute programs like physical machines.
VMware makes virtual server hardware and partitions a physical server into multiple virtual machines. You can read more at www.vmware.com › Products › Datacenter Products
Appeal Virtual Machines was created in 1998.
A hypervisor is a software that creates and manages virtual machines within an operating system. It acts as a mediator between the physical hardware and the virtual machines, allowing multiple operating systems to run on a single physical machine. The hypervisor allocates resources, such as CPU, memory, and storage, to each virtual machine, ensuring they operate efficiently and securely.
HP Integrity Virtual Machines was created in 2005.
Modern machines do not consist of multiple levels of virtual machines; that is a function of the host operating system's virtual machine manager and its guest operating systems, all of which are implemented through software. The operating system's virtual machine manager exposes one or more virtual machines upon which you can host one or more guest operating systems and their applications. In order to execute compiled Java applications upon one of these guest operating systems you will also need to install the Java virtual machine for that specific operating system. Thus you end up with a Java program executing within a Java virtual machine executing within a virtual machine executing within a virtual machine manager executing upon the physical hardware. The physical hardware itself may be optimised to handle virtual machine managers more efficiently, but the virtual machine manager is a software program; it is not part of the physical machine architecture
You can either install them on three partitions or use virtual machines. I would recommend virtual machines. They are frequently free or inexpensive and allow you to run multiple OS's at the same time. Try google'ing vmware.