Operating System Virtualization Course

Lesson 1 • Taxonomy of Virtualization Types

Categorises full virtualization, paravirtualisation, and OS-level virtualization. Provides a reference framework for comparing technologies in later chapters.

Lesson 2 • What Virtualization Is and Why It Matters

Defines virtualization and its role in modern computing infrastructure. Connects historical context to current enterprise adoption drivers.

Lesson 3 • Key Components of a Virtualized System

Identifies hypervisors, virtual machines, guest OSes, and management planes. Establishes vocabulary used in all subsequent technical chapters.

Lesson 1 • Memory Virtualization and Management

Explains shadow page tables, extended page tables, and memory ballooning. Demonstrates how memory virtualization affects guest OS behaviour and performance.

Lesson 2 • Type 1 Bare-Metal Hypervisors

Examines hypervisors that run directly on hardware without a host OS. Explains performance advantages and deployment contexts for enterprise environments.

Lesson 3 • I/O and Device Virtualization

Covers emulated, paravirtualised, and direct-assigned I/O models. Prepares students to optimise storage and network throughput in virtual environments.

Lesson 4 • Type 2 Hosted Hypervisors

Covers hypervisors that run atop a host operating system. Highlights use cases in development, testing, and desktop virtualization.

Lesson 1 • Provisioning and Deploying Virtual Machines

Covers template creation, cloning, and automated deployment workflows. Establishes repeatable provisioning practices that reduce configuration drift.

Lesson 2 • Snapshots, Checkpoints, and State Management

Explains snapshot mechanics, delta disk chains, and checkpoint strategies. Connects state management to backup, testing, and rollback workflows.

Lesson 3 • Backup, Recovery, and Business Continuity

Covers agent-based and agentless backup methods, RPO/RTO planning, and restore testing. Links VM backup strategies to organisational continuity requirements.

Lesson 4 • Decommissioning and Resource Reclamation

Addresses safe VM retirement, disk reclamation, and licence tracking. Prevents resource sprawl and ensures compliance during VM removal.

Lesson 1 • NFS and SMB Shared Storage

Covers NFS and SMB datastores, mount options, and performance tuning. Enables file-based shared storage deployment for VM workloads.

Lesson 2 • Software-Defined Storage Concepts

Introduces hyper-converged and distributed storage architectures for virtual environments. Connects software-defined storage to scalability and cost efficiency goals.

Lesson 3 • Storage Area Networks and Fibre Channel

Explains SAN architecture, zoning, LUN masking, and multipathing for VMs. Prepares students to connect hypervisors to enterprise block storage fabrics.

Lesson 1 • VLAN Segmentation in Virtual Environments

Covers VLAN tagging modes, trunk ports, and guest VLAN isolation. Connects VLAN design to security segmentation and traffic management.

Lesson 2 • Network Performance Optimisation for VMs

Addresses VMXNET3 drivers, receive-side scaling, and jumbo frames for VM workloads. Connects tuning techniques to measurable throughput and latency improvements.

Lesson 3 • Overlay Networking: VXLAN and GENEVE

Introduces encapsulation-based overlay protocols that extend Layer 2 across Layer 3 boundaries. Enables multi-tenant and multi-site virtual network designs.

Lesson 4 • Virtual Firewalls and Micro-Segmentation

Covers distributed firewall placement, micro-segmentation policies, and east-west traffic control. Reduces attack surface within virtualized data centres.

Lesson 1 • Linux Namespaces and Control Groups

Explains the kernel primitives—namespaces and cgroups—that underpin container isolation. Provides the technical foundation for understanding all container runtimes.

Lesson 2 • Container Storage and Persistent Data

Addresses volume drivers, bind mounts, and CSI plugins for persistent container storage. Links storage choices to stateful application requirements.

Lesson 3 • Container Runtimes and Image Management

Covers OCI-compliant runtimes, image layering, and registry workflows. Connects image management practices to deployment consistency and security.

Lesson 4 • Container Networking Models

Examines bridge, host, overlay, and macvlan networking modes for containers. Enables students to select and configure appropriate network models per workload.

Lesson 1 • Compliance and Audit in Virtualized Infrastructure

Explains configuration compliance scanning, audit logging, and evidence collection for virtual environments. Aligns virtualization operations with regulatory and internal audit requirements.

Lesson 2 • VM Escape and Isolation Threats

Analyses VM escape attack vectors, shared resource side channels, and mitigation techniques. Connects threat awareness to architectural and configuration countermeasures.

Lesson 3 • Network Security in Virtual Environments

Covers virtual firewall rules, encrypted VM traffic, and network intrusion detection. Protects east-west and north-south traffic flows within virtual networks.

Lesson 4 • Hypervisor Security Hardening

Covers attack surface reduction, patch management, and secure boot for hypervisors. Establishes the security baseline for all hosted workloads.

Lesson 1 • Storage Performance Optimisation

Addresses storage I/O control, queue depth tuning, and caching tiers for VM workloads. Reduces storage bottlenecks that degrade application response times.

Lesson 2 • CPU and Memory Tuning Techniques

Covers NUMA topology awareness, vCPU sizing, memory reservation, and limit settings. Directly improves VM performance by aligning virtual resources with physical topology.

Lesson 3 • Capacity Planning Methodologies

Applies trend analysis, workload profiling, and what-if modelling to forecast resource needs. Enables proactive infrastructure scaling before performance degradation occurs.

Lesson 4 • Resource Scheduling and Load Balancing

Explains distributed resource scheduling, affinity rules, and automated load balancing. Ensures optimal workload distribution across available physical hosts.