Amazon RDS Multi-AZ with one standby
How it works
![Amazon RDS Multi-AZ deployment How It Works Diagram Amazon RDS Multi-AZ deployment How It Works Diagram](https://d1.awsstatic.com/product-page-diagram_MAZ_HIW%402xa.245de181144d709479981ab02a5318165b7ed8a9.png)
Amazon RDS Multi-AZ with two readable standbys
How it works
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Introduction to Amazon RDS Multi-AZ
Amazon RDS Multi-AZ deployments provide enhanced availability and durability for your Amazon RDS database (DB) instances, making them a natural fit for production database workloads. With two different deployment options, you can customize your workloads for the availability they need.
Comparison table
Amazon RDS Single-AZ or Amazon RDS Multi-AZ with one standby or Amazon RDS Multi-AZ with two readable standbys
Feature |
Single-AZ |
Multi-AZ with one standby |
Multi-AZ with two readable standbys |
Available engines |
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Additional Read |
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Lower latency (higher throughput) for transaction commits |
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Automatic failover duration |
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Minor version upgrades downtime |
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Higher resiliency to AZ outage |
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Lower jitter for transaction commits |
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Customers
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SysCloud
SysCloud creates automatic backups for critical software as a service (SaaS) applications, monitors for malicious files, and delivers powerful insights about your data and compliance —all from one dashboard. SysCloud uses Amazon RDS Multi-AZ with two readable standbys for its internal monitoring system.
The new Amazon RDS Multi-AZ deployment option offers us a cost-efficient way to achieve better performance, availability, and read scalability. With the new Amazon RDS Multi-AZ deployment option, we expect to create a better experience for our customers.
Vikram Srinivasan, Director, Infrastructure at SysCloud
Pricing
Amazon RDS Multi-AZ is available for RDS for PostgreSQL, RDS for MySQL, RDS for MariaDB, RDS for SQL Server, RDS for Oracle, and RDS for Db2. Amazon RDS Multi-AZ with two readable standbys is available for RDS for PostgreSQL and RDS for MySQL. To learn how Amazon Aurora provides enhanced availability by making your data durable across three Availability Zones, see Multi-AZ deployments with Aurora Replicas.
For Single-AZ deployments, Multi-AZ deployments with one standby instance, and Multi-AZ deployments with two readable standbys, pricing is per DB instance-hour consumed, from the time a DB instance is launched until it is stopped or deleted. Partial DB instance-hours are billed in one-second increments with a 10 minute minimum charge following a billable status change such as creating, starting, or modifying the DB instance class.
For more information on pricing for Amazon RDS Multi-AZ, see the Amazon RDS pricing pages.
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