Azure Classroomnotes 05/Sep/2023

Disk Storage in Azure

• When we create a virtual machine the disks will be created.
• In Azure we have 2 types of disks based on where they are created
  • Created on the same physical server, where vm is created => Temp Disk
  • Created on the different physical server in Same Region/Zone => Data Disk
• Since Temp Disk is allocated from same server, when vm is stopped/deallocated or removed the Temp Disk also gets deallocated or deleted. (Non Persistent)
• Data Disk where we have two types shown below can exist even after the virtual machine is deleted. (Persistent Disks)
  • OS Disk (This disk has operating system)
  • Data Disk
    
• Azure allow Disks to be created in two ways
  • Storage Account
    • This is referred as unmanaged disk
    • Page Blobs in Storage accounts means virtual hard disk
  • Managed Disks:
    • This is service for handling disks
• Temp Disk: Size is decided by the vm type
• Sizes of Data Disk, each data disk can have a maximum size of 32,767 GiB and Ma size of OS disk is 4095 GiB
• Types of Azure Managed Disks:
  • Ultra Disks
  • Premimum SSD v2
  • Premium SSD
  • Standard SSD
  • Standard HDD
• Refer Here for disk type comparision
  

Create a Azure Virtual Machine with Size B1s

• Figure out the Max IOPS, Number of Data Disks possible and Temp Storage Size from VM Size
  
• Lets look at Disks Tab
  
  
  
• Now create the Virtual Machine