Azure Classroom Series – 26/Aug/2020

Impact of Azure Infrastructure to Disk Storage

• Disks are local to Azure Regions i.e. Azure VM & Disk should be from the Same Region (Location).
• Now lets try to create a Windows VM and focus on Disk Section
  1. Create a resource group
  2. Create a Virtual Machine with Windows Image
  3. Navigate the disks tab in virtual machine creation pages
  4. Don’t change any advanced settings which will create a managed disk
  5. Create a vm
• In the above case
  • A Managed disk with Premium SSD (OS Disk) was created
  • There were no other data disks
• Wait for the resource to be created and navigate to Azure VM
• Explore Disks blade in Azure VM
• If we recollect while creating vm, we have created one os disk & as discussed yesterday, azure tries to add one temp disk to every vm that gets created. so in this vm there should two disks
  • OS Disk
  • Temp Disk
• Resized the image size to b2ms
• Look at the disks inside vm
• C-Drive is premium ssd OS disk
• D-Drive is a temporary disk. Size of temporary disk is dependent of vm size which you select.
• Azure VM size also determines how many data disks can you have
• How is disk performance measured?
  • Speed of disk is measured with maximum IOPS (input/output operations per second)
• VM can be shutdown/de-allocated and then billing of vm will stop. You will still be paying for disk when your vm is deallocated

Topics to be explored

• If there is a managed disk how about un-managed
• Performance of Disks