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Zorluk: OrtaAzure Regions, Availability Zones, and Region Pairs

A logistics company is designing a system in Azure to protect their workloads from a localized datacenter failure. Is it true or false that deploying application instances across multiple Availability Zones within a single region protects the application from a region-wide outage?

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Cevap

The statement is false. Deploying across multiple Availability Zones within a single region does not protect against a region-wide failure.
The correct option is false because Availability Zones are designed to mitigate localized failures, such as power or cooling issues in individual datacenters, rather than region-wide disasters.

Adım Adım Çözüm

1
Analyze the scope of protection provided by Availability Zones.
Availability Zones protect against localized failures (power, cooling, hardware) within a single region.
Each zone consists of one or more datacenters equipped with independent power, cooling, and networking.
2
Analyze the scope of a region-wide outage.
A region-wide outage affects the entire geographic area of the region.
Since all Availability Zones of a region are located in the same geographic region, a regional disaster can affect all of them simultaneously.
3
Determine if the statement is correct.
The statement is false because regional resilience requires multi-region deployments or region pairs, not just zone redundancy.
To survive a region-wide failure, resources must be deployed across different regions.

Anahtar Kavram

Availability Zones provide protection against localized zone/datacenter failures, whereas regional disasters require multi-region architectures or region pairs.
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Azure Regions, Availability Zones, and Region Pairs

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