Azure VM High Availability

• To make the applications in the VM Highly Available we need to make vm’s redundant (running multiple vms)
• According to Azure Global infrastructure
  • in one Region we will have many data centers
  • in one Region we will have 3 zones with many data centers each
• So possible options
  • Run multiple vms with same application in Same Region or Same Zone
  • Run multiple vms with same application in Same Region on multiple Zones
  • Run multiple vms with same application in Same multiple Regions
• Below are the ways to deploy
  • VMs in multiple racks in Same Region, Options
    • Availability Set:
      • Multiple vms in multiple racks but no gurantees on whether they will be closer to each other
    • Proximity Placement Group
      • Multiple vms in multiple racks closer to each other in same Datacenter inside region/zone
  • VMs in Different Zones:
    • Zone Based Deployment
  • Vms in Different Regions:
    • Multi Region Deployment

Availability Set

• Has two options
  • Fault Domain
  • Update Domain
    
    

Proximity Placement Group

• Refer Here for official docs
• Refer Here
• Create a Proximity Placement Group
  
• While Creating vm in the advanced section use the proximity placement group created
  
  

Create a Price Estimate

• Figure out what would be monthly costs for Running a D series VM with 4 virtual cpus and 16 GB of RAM in Chennai.
  • OS: Windows 2022
  • Disk Size: 128 GB (SSD)
• Figure out the cost for Running B Series with premium disk with 2 vcpus and 8 GB of RAM. We have the same vm running in south india and east us
  • OS: Ubunutu
  • Disk: 128 GB (SSD)

Zone Based Deployment