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Does OutSystems 11 support Amazon RDS Multi-AZ ?

I am architecting infrastructure for OutSystems on AWS. Our team needs Multi-AZ cluster for Amazon RDS. My question is, does OutSystems 11 supports Multi-AZ architecture on Amazon RDS? Or If we want Multi-AZ clustering for DB, do we need to use EC2 and install MSSQL on that EC2 instance?

2025-11-25 13-20-12
Tamirys Silva Barina

Hi, Kensuke,

OutSystems Cloud offers a high availability configuration for production databases on select editions, whereby the production database instance has a standby replica in a different availability zone. 

You can check more details on the link below:

https://success.outsystems.com/documentation/11/setup_and_maintain_your_outsystems_infrastructure/setting_up_outsystems/possible_setups_for_an_outsystems_infrastructure/high_availability_and_scalability_strategies/


Cheers,

Tami

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Kensuke Saiki

Hi Tami,


I understood OutSystems Cloud offers a high availability configuration. My query is about OutSystems on private Cloud (AWS/Azure). When you choose AWS as cloud vendor and Amazon RDS for DB, can you enable Multi-AZ setting on Amazon RDS ? 

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Sam Riggleman

@Kensuke Saiki Curious if you ever found the answer to this.

2024-09-12 07-55-10
Sana Shaikh

Hello, 

Enabling Multi-AZ on Amazon RDS while using OutSystems on a private cloud setup in AWS is straightforward and recommended for achieving high availability and reliability in your application. Just ensure to monitor the costs associated with this feature and adjust your architecture accordingly. 

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