You have an on-premises network that contains several servers.
You plan to migrate all the servers to Azure.
You need to recommend a solution to ensure that some of the servers are available if a single Azure data center goes offline for an extended period.
What should you include in the recommendation?
Click on the arrows to vote for the correct answer
A. B. C. D.A
Fault tolerance is the ability of a system to continue to function in the event of a failure of some of its components.
In this question, you could have servers that are replicated across datacenters.
Availability zones expand the level of control you have to maintain the availability of the applications and data on your VMs. Availability Zones are unique physical locations within an Azure region. Each zone is made up of one or more datacenters equipped with independent power, cooling, and networking. To ensure resiliency, there are a minimum of three separate zones in all enabled regions. The physical separation of Availability Zones within a region protects applications and data from datacenter failures.
With Availability Zones, Azure offers industry best 99.99% VM uptime SLA. By architecting your solutions to use replicated VMs in zones, you can protect your applications and data from the loss of a datacenter. If one zone is compromised, then replicated apps and data are instantly available in another zone.
https://docs.microsoft.com/en-us/azure/virtual-machines/windows/manage-availabilityThe correct answer is A. fault tolerance.
Explanation:
Migrating to Azure provides several benefits such as improved scalability, elasticity, and low latency. However, the question specifically asks for a solution to ensure availability in case of a single data center going offline for an extended period.
Azure provides fault tolerance solutions to ensure high availability and minimize downtime. Azure's fault tolerance features include availability zones and availability sets.
Availability zones are physically separate locations within an Azure region that have independent power, cooling, and networking. Deploying resources across multiple availability zones ensures that if one zone goes offline, resources are still available in the other zones.
Availability sets are logical groupings of resources within an Azure data center. Resources in an availability set are distributed across multiple fault domains and update domains. A fault domain represents a group of hardware that shares a common power source and network switch, while an update domain is a group of resources that are updated together during maintenance.
By grouping resources into an availability set, Azure ensures that if one fault domain or update domain experiences an outage, resources in the other fault or update domains are still available.
In summary, to ensure availability of servers in case of a single Azure data center going offline for an extended period, you should recommend implementing fault tolerance features such as availability zones and availability sets. Therefore, the correct answer is A. fault tolerance.