AZ-104 Certification Notes

Chapter 10 - Introduction

Introduction to Azure Disks

A virtual hard drive in the cloud Block-level storage volumes for SSD and HDD

Azure Managed Disks are block-level storage volumes that re managed by Azure and used with Azure VMs

Managed disks are like a physical disk in an on-premises server, but, virtualized. You specify size, type, and other configurations without worrying about the underlying hardware.

• Managed disks are designed for 99.999% availability
• Azure created three replicas of your data, allowing for high durability
• You can create up to 50,000 VM disks of a type in a subscription per region
• Allowing you to create up to 1,000 VMs in a virtual machine scale set using a Marketplace image
• Managed disks are integrated with availability sets
• Managed disks support Availability Zones
• Azure Backup can be used to create a backup job with time-based backups and backup retention policies
• You can use Azure role-based access control (RBAC) to assign specific permissions for a managed disk to one or more users
• You can directly import your Virtual Hard Drive Disks (VHD) into Azure Disks
• You can use Azure Private Links to ensure traffic between Azure Disks and VMs stay within the Microsoft network

Practice Quiz

• How many replicas of your data does Azure create, which allows for high durability?

  • Five
  • Three
  • Four
  • Two

• What is the maximum number of virtual machines you can create in a virtual machine scale set using a Marketplace image?

  • 10000
  • 1000
  • 500
  • 100

• What feature allows you to assign specific permissions for a managed disk to one or more users?

  • Azure role-based access control (RBAC)
  • Azure Private Links
  • Azure Backup
  • Azure Systems

• What are block-level storage volumes that are managed by Azure and used with Azure VMs?

  • Azure Managed Disks

• What are Azure Private Links used for?

  • They are used to ensure traffic between Azure Disks and VMs stay within the Microsoft network.