From the course: Red Hat Certified System Administrator (EX200) Cert Prep: 1 Deploy, Configure, and Manage (2021)

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Virtualization on Enterprise Linux

Virtualization on Enterprise Linux

From the course: Red Hat Certified System Administrator (EX200) Cert Prep: 1 Deploy, Configure, and Manage (2021)

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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 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: overcommitting of physical resources. This means we can give out more resources to VMs that 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 overcommitting. 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…

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