Azure Classroom Series – 11/May/2021

Azure VM Instance Sizes

  • Azure categories VM sizes based on Types and then by the Family Preview
  • Azure VM Size naming convention
[Family]+[sub-family]*+[# of vCPUs]+ [Additive Features] + [Accelarator type] + [Version]

Additive Features
a = AMD Processor
d = disk 
h = hibernation capable
i = isolated size
l = low memory
m = memory intensive
t = tiny memory
r = RDMA capable
s = premium storage is supported

Changing VM Sizes

  • In Azure we can change the VM instance size , but this leads to restart of the VM
  • Lets create an azure VM with size B1s Preview Preview
  • Changing the VM Size is vertical scaling Preview

Azure VM sizes with no temporary disk

  • The VM Sizes below don’t have temporary disk Preview Preview
  • We cannot resize VM with no temp disk to VM with Temp disk

Azure VM Purchasing Options

  • Pay As you go:
    • This helps in creating VMs on demand and pay for the VMs depending on the usage
    • This is costlier option for azure VM instances
  • Reserved Instances:
    • Azure Reservations help us save money by committing to one-year or three-year plans for multiple products.
    • Reservations can reduce costs up to 72% from pay as you go prices.
    • Exchanging reservations Refer Here
  • Azure Spot Virtual Machines:
    • Using Azure Spot VM allows us to take an advantage of unused capacity at significant cost savings
  • Azure Hybrid Benefit: Allows us to bring our license to VM Images like Windows, RHEL, SUSE Enterprise Linux and Azure will not add the charges of Software License to the VMs Created.

Next Topics

  • Azure Availability Options
    • Zones
    • Availability Sets
  • Extensions
  • Data Disks

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