## Inside a Virtual Server - Virtual servers offer scalability and flexibility beyond physical hardware. - Components emulate physical resources but are managed by a hypervisor. --- ## Core Components of a Virtual Server - **vCPU**: Shares the host's physical CPU resources. - **Virtual RAM**: Allocated memory from the host's physical RAM. - **Virtual Storage**: Virtual disks appear as independent drives. - **vNIC**: Connects the virtual server to networks. - **Hypervisor**: Software enabling resource virtualization. --- ## Virtual CPUs (vCPUs) - Emulates a physical CPU, sharing resources with other VMs. - Managed by the hypervisor to ensure efficient task execution. --- ## Virtual RAM - Allocated portion of the physical server's memory. - Provides isolated and reliable memory for VMs. --- ## Virtual Storage - Virtual disks stored as files on the host's physical drives. --- ## Virtual Network Interface (vNIC) - Provides network connectivity to the VM. - Managed to ensure secure and isolated communication. --- ## Hypervisor - Manages the virtualization of hardware resources. - **Type 1**: Runs directly on physical hardware. - **Type 2**: Runs on top of an operating system. --- ## Differences: Physical vs. Virtual Servers - **Resource Sharing**: Physical servers dedicate resources; virtual servers share them. - **Scalability**: Virtual servers can scale resources dynamically. - **Cost**: Virtual servers lower costs with shared infrastructure. - **Management**: Virtual servers simplify management by outsourcing to cloud providers. --- ## Components in Azure VMs (Examples) - **vCPU and RAM**: Choose configurations based on workload (e.g., B-series for burstable workloads). - **Virtual Disks**: Azure Managed Disks for optimized storage. - **Networking**: Utilize VNets, NSGs, and Azure networking tools. - **Management Tools**: Use Azure Monitor and ARM templates for automation and monitoring.