Azure – Creating virtual machine (VM) – discussing Availability options – when to use which option

Hi All,
Greetings for the day!!!
Today discussing “Availability options” for virtual machine
Details
- When we create an Virtual Machine – VM, we have asked an option for “Availability options” as shown in below fig
What are Availability options
- Options provided by Azure to maintain the high availability of our application
- Options provided by Azure to manage the resiliency for our application
- What is resiliency
- Resiliency is the ability of a system to recover from failures and continue to function.
- Following are options available as on today
- No infrastructure redundancy required
- Availability zone
- Virtual machine scale set
- Availability set
- No Infrastructure Redundancy required : Single VM in the selected region. No copy of VM is maintained
- Availability zone
- An Availability Zone is a physically separate zone / locations, within an Azure region.
- There are three Availability Zones per supported Azure region.
- Each Availability zone contains one or more datacenters
- We can protect our application and data from loss of datacenters
- Each Availability Zone has a distinct power source, network, and cooling
- Using zones for our VMs means protecting our apps and data from the loss of data center
- If one zone is compromised or have an issue , then apps and data from another zone is immediately available
- Azure availability zones are connected by a high-performance network with a round-trip latency of less than 2ms
- They help our data stay synchronized and accessible when things go wrong
- Here COST is applicable for transferring data in between Zones – requires to synchronize our applications or data
- Availability zones also provides protection from Calamities
- Microsoft offers the industry’s best 99.99% VM uptime SLA for Availability Zone.
- Virtual machine scale set
- Azure virtual machine scale sets allows us to create and manage a group of load balanced VMs.
- As per our application demand, the number of VM instances can automatically increase or decrease
- This provides high availability to our application
- Also allows centrally manage / configure / update our VMs
- Availability sets
- Protect again failures within data center
- VM replica will be created in fault domain
- We dont have COST associated with data transfer
- We always have same zone.
- Availability Set is considered over Availability Zone when Cost is factor as there is no data transfer cost
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Enjoy the beautiful life !! Have a FUN !! HAVE A SAFE LIFE !! TAKE CARE 🙂
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