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What is Availability Options in Azure Cloud?

 Hi  Guys ,  Basic Thought cames in our mind when we are creating an vitrual machine. So today we will discuss  'What is Availibility Options?'. Before moving forward, please see red colour circule in Image. Availability Option Dropdown is there in image. in this dropdown, there are two options are available to choosen.

Create a virtual machine

  • Availability  Set
  • Availability Zone

Availability Set- 

It protects failure within datacenter. It has two domain which are given below-

Fault Domain (FD)- 

  • It is Physical separation of VMs 
  • It goes up to 5 fault domains in a availability set

Update Domain (UD)-

  • It goes to 20 update domains in a availability set. 
  • It is a logical separation. 
  • At any point of time, only one UD can be updated.

Suppose-UD0 is updated right now. It means only VMs which are belongs to UD0 will be down for update.

See the image for more clarity-

Availability Set

When you are creating VM you will see these as given in below given images.
Availability set and create new 
when you will click on create new as given in above image. you will see as  'Create New' .

Set Domains 


Availability Zones- 

It protects from entire database center failure. It is a physical separation location with in a region.


Availability Zone



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