AZ-104 Certification Notes

Chapter 9 - Creating and Managing Virtual Machines (Part 1)

What is an Azure Virtual Machine?

• Scalable cloud computing resource offered as Infrastructure as a Service (IaaS)
• Includes CPU, memory, storage, and networking resources
• Can be created from the Azure Portal, Azure CLI, or PowerShell

Defining Virtual Machines

• Core Parts
  • CPU and Memory
    • Determined by virtual machine (VM) sizing. Selected based on VM use case
  • Networking
    • Virtual Networks (VNets), Subnets, Network Interface Card (NIC), Public IP (PIP), and Network Security Group (NSG)
  • Storage
    • Azure Disks, consisting of OS disk, temporary disk, and data disk

Keeping VM Workloads in the Family

• VM Family Type:
  • General Purpose
    • Balanced CPU-to-memory. Best for testing, development, or for small to medium workloads
  • Compute Optimized
    • High CPU-to-memory. Good for medium traffic web servers, network appliances, batch processing, and app servers
  • Memory Optimized
    • High memory-to-CPU. Works well for relational databases, caching, and in-memory analytics
  • Storage Optimized
    • High disk throughput and I/O. Good for Big Data, SQL, NoSQL, and data warehousing. Works well for Online Transactional Processing (OLTP) databases
  • GPU
    • Specialized for heavy graphic rendering and video editing. Works well for artificial intelligence (AI) training and deep learning
  • HPC
    • Fastest and most powerful. Great for intensive workloads like large scale geophysics and advanced mathematics/sciences

Virtual Machine Properties

• Name:

  • VM1

• Region:

  • East US 2

• Size:

  • Standard_B1s

• Image:

  • Linux/Windows

• Virtual Machine

  • Disk
    • Operating system and temporary disk by default
    • Can add additional data disks
  • NIC
    • IP configurations
      • Private IP address and if wanted a public IP address