# Best Practices for Testing Zone Redundancy

DevFeed: [Best Practices for Testing Zone Redundancy](<https://devfeed.tech/articles/best-practices-for-testing-zone-redundancy-11561.md>)

Original publisher: [Read original article](<https://www.gremlin.com/blog/best-practices-for-testing-zone-redundancy>)

Author: Sam Rossoff

Published: 2024-10-16T00:00:00Z

Content type: article

Language: en

Sources: [Gremlin Blog](<https://devfeed.tech/sources/gremlin-blog.md>)

Topics: [Testing](<https://devfeed.tech/topics/testing.md>), [cloud-infrastructure](<https://devfeed.tech/topics/cloud-infrastructure.md>), [datacenter](<https://devfeed.tech/topics/datacenter.md>), [Software Engineering](<https://devfeed.tech/topics/software-engineering.md>)

Tags: [amazon](<https://devfeed.tech/tags/amazon.md>), [best-practices](<https://devfeed.tech/tags/best-practices.md>), [data-center](<https://devfeed.tech/tags/data-center.md>), [data-centers](<https://devfeed.tech/tags/data-centers.md>), [ec2](<https://devfeed.tech/tags/ec2.md>), [engineering](<https://devfeed.tech/tags/engineering.md>), [testing](<https://devfeed.tech/tags/testing.md>)

## AI overview

The article explains why deploying software across multiple zones or regions does not by itself ensure resilience. It presents testing as a way to verify zonal redundancy and discusses failures involving packet loss, configuration, dependencies, capacity, quotas, fleet balance, and split-brain tolerance.

## Source excerpt

Gremlin Principal Software Engineer Sam Rossoff shares key best practices and strategies for effectively testing zone redundancy.