From the course: Linux System Engineer: Network Bonding, IPv6, Routing, and Virtual Systems

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Virtualization on Enterprise Linux

Virtualization on Enterprise Linux

From the course: Linux System Engineer: Network Bonding, IPv6, Routing, and Virtual Systems

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Virtualization on Enterprise Linux

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- [Instructor] Virtualization allows us to run guest operating systems on a physical host's computer. Red Hat uses kernel virtual machine or KVM as the virtualization hypervisor and Quick EMUlator or QEMU to provide emulated devices. KVM provides the following features, over-committing of physical resources. This means we can give out more resources to VMs than exist on the physical machine. For instance, if we had 10 virtual machines and each virtual machine had 10 gigabytes of virtual disk space, then we'd need 100 gigabytes of real physical disk space on the storage server to store the VM images. In this example, we are not over-committing. Usually though, computers don't use all of their disk space. Let's say that two of our VMS are using 10 gigabytes of space and the rest are only using two gigabytes each. This is a total of 36 gigabytes of disk space needed on the storage server. Just to give us a little extra room, we would probably allocate 50 gigabytes of space on the storage…

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