Glossary

  • KVM - Kernel Based Virtual Machine.
  • qcow2 - qcow is a file format for disk image files used by QEMU, a hosted virtual machine monitor.[1] It stands for "QEMU Copy On Write" and uses a disk storage optimization strategy that delays allocation of storage until it is actually needed. Files in qcow format can contain a variety of disk images which are generally associated with specific guest operating systems. Two versions of the format exist: qcow, and qcow2, which use the .qcow and .qcow2 file extensions, respectively. Source: http://www.linux-kvm.org/page/Qcow2
  • QEMU - QEMU (short for Quick Emulator) is a free and open-source hosted hypervisor that performs hardware virtualization (not to be confused with hardware-assisted virtualization). Source: https://en.wikipedia.org/wiki/QEMU
  • zHPM - IBM z Systems Hypervisor Performance Manager - The IBM z Systems Hypervisor Performance Manager (zHPM) monitors virtual machines running on KVM to achieve goal-oriented policy based performance goals.

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