Samuel
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How to create a virtual machine in Azure.
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What is a Virtual machine?
A Virtual Machine (VM) is a software-based emulation of a physical computer.
Runs an operating system (OS) and applications like a physical machine.
Enabled by hypervisor technology, which manages resource allocation between VMs and the host system.
Key Components
Hypervisor (Virtualization Layer):
Type 1 (Bare-metal): Runs directly on hardware (e.g., Microsoft Hyper-V, VMware ESXi).
Type 2 (Hosted): Runs on a host OS (e.g., VirtualBox, VMware Workstation).
Virtual Hardware: Virtual CPU, RAM, disk (VHD/VHDX), and network adapters.
Guest OS: The OS installed inside the VM (Windows, Linux, etc.).
Benefits
✔ Isolation: VMs operate independently; crashes in one don’t affect others.
✔ Cost-Efficiency: Reduces hardware costs by consolidating multiple VMs on one physical server.
✔ Portability: VMs can be migrated between hosts (e.g., Azure Migrate).
✔ Testing & Dev: Safe environment for app testing, legacy software, or malware analysis.
✔ Disaster Recovery: Back up/restore VMs easily (Azure Backup, VMware Snapshots).