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You're reading from  AWS Certified Machine Learning - Specialty (MLS-C01) Certification Guide - Second Edition

Product typeBook
Published inFeb 2024
PublisherPackt
ISBN-139781835082201
Edition2nd Edition
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Authors (2):
Somanath Nanda
Somanath Nanda
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Somanath Nanda

Somanath has 10 years of working experience in IT industry which includes Prod development, Devops, Design and architect products from end to end. He has also worked at AWS as a Big Data Engineer for about 2 years.
Read more about Somanath Nanda

Weslley Moura
Weslley Moura
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Weslley Moura

Weslley Moura has been developing data products for the past decade. At his recent roles, he has been influencing data strategy and leading data teams into the urban logistics and blockchain industries.
Read more about Weslley Moura

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Managing failover in Amazon RDS

RDS instances can be Single-AZ or Multi-AZ. In Multi-AZ, multiple instances work together, similar to an active-passive failover design.

For a Single-AZ RDS instance, storage can be allocated for that instance to use. In a nutshell, a Single-AZ RDS instance has one attached block store (EBS storage) available in the same Availability Zone. This makes the databases and the storage of the RDS instance vulnerable to Availability Zone failure. The storage allocated to the block storage can be SSD (gp2 or io1) or magnetic. To secure the RDS instance, it is advised to use a security group and provide access based on requirements.

Multi-AZ is always the best way to design the architecture to prevent failures and keep the applications highly available. With Multi-AZ features, a standby replica is kept in sync synchronously with the primary instance. The standby instance has its own storage in the assigned Availability Zone. A standby replica cannot be...

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AWS Certified Machine Learning - Specialty (MLS-C01) Certification Guide - Second Edition
Published in: Feb 2024Publisher: PacktISBN-13: 9781835082201

Authors (2)

author image
Somanath Nanda

Somanath has 10 years of working experience in IT industry which includes Prod development, Devops, Design and architect products from end to end. He has also worked at AWS as a Big Data Engineer for about 2 years.
Read more about Somanath Nanda

author image
Weslley Moura

Weslley Moura has been developing data products for the past decade. At his recent roles, he has been influencing data strategy and leading data teams into the urban logistics and blockchain industries.
Read more about Weslley Moura