api: "YAML JSON TOON Database"
version: 1.0.0
format: json
dataset:
  slug: virtualization-concepts
  title: "Virtualization Concepts"
  description: "Key concepts in hardware virtualization and virtual machines."
  category: DevOps
  category_slug: devops
  tags: "devops,virtualization,hypervisor,vm,cloud"
  view_count: 0
data
  -
    concept: "Hypervisor (Type 1)"
    description: "Bare-metal hypervisor running directly on hardware."
    examples: "VMware ESXi, Microsoft Hyper-V, Xen, KVM"
  -
    concept: "Hypervisor (Type 2)"
    description: "Hosted hypervisor running on top of a host operating system."
    examples: "VirtualBox, VMware Workstation, Parallels"
  -
    concept: "Virtual Machine"
    description: "Emulated computer system with its own OS and resources."
    vs: "vs Container: heavier isolation, full OS"
  -
    concept: Para-virtualization
    description: "Guest OS is modified to communicate with hypervisor via hypercalls."
    examples: "Xen (early), IBM LPARs"
  -
    concept: "Hardware-assisted Virtualization"
    description: "CPU extensions (Intel VT-x, AMD-V) enable efficient VM isolation."
    examples: "Modern hypervisors all use this"
  -
    concept: SR-IOV
    description: "Single Root I/O Virtualization - allows direct VM access to PCIe devices."
    benefit: "Near-native network performance"