Podcast
Questions and Answers
What type of database does Amazon RDS primarily serve?
What type of database does Amazon RDS primarily serve?
- Transactional (correct)
- Graph
- Time Series
- Analytical
What is a DB instance in Amazon RDS?
What is a DB instance in Amazon RDS?
- A database security group
- A database engine
- A database environment in the cloud with compute and storage resources (correct)
- A database connection endpoint
How many Amazon RDS DB instances can a customer have by default?
How many Amazon RDS DB instances can a customer have by default?
- 20
- 40 (correct)
- 30
- 50
What is the purpose of maintenance windows in Amazon RDS?
What is the purpose of maintenance windows in Amazon RDS?
What is the exception to the rule of no access to the underlying EC2 instance in Amazon RDS?
What is the exception to the rule of no access to the underlying EC2 instance in Amazon RDS?
How can you retrieve the endpoint of a DB instance in Amazon RDS?
How can you retrieve the endpoint of a DB instance in Amazon RDS?
What is a requirement for Windows integrated authentication for SQL in Amazon RDS?
What is a requirement for Windows integrated authentication for SQL in Amazon RDS?
What is the benefit of automated backups in Amazon RDS?
What is the benefit of automated backups in Amazon RDS?
What is the primary use case for Amazon RDS?
What is the primary use case for Amazon RDS?
What is the purpose of Amazon RDS?
What is the purpose of Amazon RDS?
What is a limitation of read replicas?
What is a limitation of read replicas?
What happens to read replicas in a multi-AZ failover?
What happens to read replicas in a multi-AZ failover?
What is a benefit of using DB snapshots?
What is a benefit of using DB snapshots?
What happens to a restored DB instance from a snapshot?
What happens to a restored DB instance from a snapshot?
What is a recommended high availability approach for databases?
What is a recommended high availability approach for databases?
What is the purpose of the AWS Database Migration Service?
What is the purpose of the AWS Database Migration Service?
What is a benefit of using the Schema Conversion Tool?
What is a benefit of using the Schema Conversion Tool?
What is a monitoring tool that integrates with Amazon RDS?
What is a monitoring tool that integrates with Amazon RDS?
What type of policies does Amazon RDS support?
What type of policies does Amazon RDS support?
How can you authenticate to your DB instance?
How can you authenticate to your DB instance?
What is the purpose of using Multi-AZ deployments in RDS?
What is the purpose of using Multi-AZ deployments in RDS?
Which statement correctly describes Read Replicas in Amazon RDS?
Which statement correctly describes Read Replicas in Amazon RDS?
What triggers a failover in a Multi-AZ RDS configuration?
What triggers a failover in a Multi-AZ RDS configuration?
What is the correct behavior of automated backups in a Multi-AZ environment?
What is the correct behavior of automated backups in a Multi-AZ environment?
Which characteristic of Read Replicas is accurate?
Which characteristic of Read Replicas is accurate?
When provisioning IOPS storage for Multi-AZ RDS DB instances, what is recommended?
When provisioning IOPS storage for Multi-AZ RDS DB instances, what is recommended?
In what scenario can a DB instance reboot be required?
In what scenario can a DB instance reboot be required?
Which of the following options is true regarding Multi-AZ configurations in RDS?
Which of the following options is true regarding Multi-AZ configurations in RDS?
Which types of database engines support Read Replicas?
Which types of database engines support Read Replicas?
What happens during a version upgrade in Multi-AZ deployments?
What happens during a version upgrade in Multi-AZ deployments?
When would it be appropriate to consider using Amazon EC2 for a database rather than Amazon RDS?
When would it be appropriate to consider using Amazon EC2 for a database rather than Amazon RDS?
Which of the following is NOT a good fit for Amazon RDS?
Which of the following is NOT a good fit for Amazon RDS?
What is the primary method for encrypting data at rest in Amazon RDS?
What is the primary method for encrypting data at rest in Amazon RDS?
How can you create an encrypted Amazon RDS DB instance?
How can you create an encrypted Amazon RDS DB instance?
What happens to the encryption status of a Read Replica created from an encrypted Amazon RDS instance?
What happens to the encryption status of a Read Replica created from an encrypted Amazon RDS instance?
What is the purpose of a DB subnet group in Amazon RDS?
What is the purpose of a DB subnet group in Amazon RDS?
Which of the following is TRUE about billing for Amazon RDS?
Which of the following is TRUE about billing for Amazon RDS?
What is the maximum storage size for an Amazon RDS instance?
What is the maximum storage size for an Amazon RDS instance?
Which of the following is TRUE regarding scaling Amazon RDS instances?
Which of the following is TRUE regarding scaling Amazon RDS instances?
What storage types are available for Amazon RDS instances?
What storage types are available for Amazon RDS instances?
What is the minimum level of compute performance required for a read replica compared to its source database?
What is the minimum level of compute performance required for a read replica compared to its source database?
What happens to the DNS endpoint of a restored database from a snapshot?
What happens to the DNS endpoint of a restored database from a snapshot?
Which of the following is a valid approach for migrating databases to AWS, minimizing application downtime?
Which of the following is a valid approach for migrating databases to AWS, minimizing application downtime?
In a multi-AZ RDS deployment, what happens to read replicas when the primary database instance fails over?
In a multi-AZ RDS deployment, what happens to read replicas when the primary database instance fails over?
Which of the following is NOT a valid method for creating read replicas of an Amazon RDS database instance?
Which of the following is NOT a valid method for creating read replicas of an Amazon RDS database instance?
Which of the following is NOT a feature supported by Amazon RDS read replicas?
Which of the following is NOT a feature supported by Amazon RDS read replicas?
Which of the following is NOT a recommended approach for high availability in Amazon RDS?
Which of the following is NOT a recommended approach for high availability in Amazon RDS?
Which of the following statements about Amazon RDS snapshots is true?
Which of the following statements about Amazon RDS snapshots is true?
What is the main purpose of using the AWS Database Migration Service (DMS)?
What is the main purpose of using the AWS Database Migration Service (DMS)?
What type of database engines support the creation of read replicas in Amazon RDS?
What type of database engines support the creation of read replicas in Amazon RDS?
What is a key feature of Amazon RDS in terms of instance management?
What is a key feature of Amazon RDS in terms of instance management?
Which of the following statements about Amazon RDS Custom is correct?
Which of the following statements about Amazon RDS Custom is correct?
How many Oracle or MS SQL instances are allowed by default in Amazon RDS?
How many Oracle or MS SQL instances are allowed by default in Amazon RDS?
What is a common misconception about Windows integrated authentication for SQL in Amazon RDS?
What is a common misconception about Windows integrated authentication for SQL in Amazon RDS?
Which aspect of Amazon RDS focuses on transaction processing rather than analytical processing?
Which aspect of Amazon RDS focuses on transaction processing rather than analytical processing?
Which statement about automated backups in Amazon RDS is inaccurate?
Which statement about automated backups in Amazon RDS is inaccurate?
What is an advantage of using Amazon RDS over traditional on-premises databases?
What is an advantage of using Amazon RDS over traditional on-premises databases?
What is a primary function of the DB instance endpoint in Amazon RDS?
What is a primary function of the DB instance endpoint in Amazon RDS?
Which assertion regarding scaling in Amazon RDS is valid?
Which assertion regarding scaling in Amazon RDS is valid?
What is a primary consideration when deciding to use Amazon EC2 for databases instead of RDS?
What is a primary consideration when deciding to use Amazon EC2 for databases instead of RDS?
Which of the following elements cannot be encrypted after the DB instance has been created?
Which of the following elements cannot be encrypted after the DB instance has been created?
What happens if the master DB instance and its Read Replica are located in different regions?
What happens if the master DB instance and its Read Replica are located in different regions?
Which anti-pattern specifically indicates that RDS is not a suitable choice?
Which anti-pattern specifically indicates that RDS is not a suitable choice?
What must be considered when scaling an RDS instance?
What must be considered when scaling an RDS instance?
When is backup storage for automated RDS backups charged?
When is backup storage for automated RDS backups charged?
Which storage type is NOT available for Amazon RDS instances?
Which storage type is NOT available for Amazon RDS instances?
Which AWS feature offers the ability to configure subnet groups for RDS?
Which AWS feature offers the ability to configure subnet groups for RDS?
What happens to the performance of an RDS instance during scaling operations?
What happens to the performance of an RDS instance during scaling operations?
What is the maximum database size supported by Amazon RDS for engines other than Microsoft SQL Server?
What is the maximum database size supported by Amazon RDS for engines other than Microsoft SQL Server?
Which of the following scenarios will NOT trigger a failover in a Multi-AZ RDS configuration?
Which of the following scenarios will NOT trigger a failover in a Multi-AZ RDS configuration?
What is the primary purpose of Read Replicas in Amazon RDS?
What is the primary purpose of Read Replicas in Amazon RDS?
Which of the following is TRUE about automated backups in a Multi-AZ RDS environment?
Which of the following is TRUE about automated backups in a Multi-AZ RDS environment?
Which of the following storage types is NOT supported for Read Replicas in Amazon RDS?
Which of the following storage types is NOT supported for Read Replicas in Amazon RDS?
Which of the following is TRUE regarding Multi-AZ deployments in RDS?
Which of the following is TRUE regarding Multi-AZ deployments in RDS?
What is the purpose of using provisioned IOPS storage for Multi-AZ RDS DB instances?
What is the purpose of using provisioned IOPS storage for Multi-AZ RDS DB instances?
In what scenario can a DB instance reboot be required in Amazon RDS?
In what scenario can a DB instance reboot be required in Amazon RDS?
What is a key difference between Multi-AZ deployments and Read Replicas in Amazon RDS?
What is a key difference between Multi-AZ deployments and Read Replicas in Amazon RDS?
Which of the following types of database engines support Read Replicas in Amazon RDS?
Which of the following types of database engines support Read Replicas in Amazon RDS?
What happens during a version upgrade in Multi-AZ deployments in Amazon RDS?
What happens during a version upgrade in Multi-AZ deployments in Amazon RDS?
What is the primary condition for using Read Replicas in Amazon RDS?
What is the primary condition for using Read Replicas in Amazon RDS?
In a Multi-AZ RDS configuration, which statement is accurate regarding the secondary DB instance?
In a Multi-AZ RDS configuration, which statement is accurate regarding the secondary DB instance?
During a failover in Multi-AZ RDS, what is updated to reflect the change?
During a failover in Multi-AZ RDS, what is updated to reflect the change?
Which of the following problems can occur when performing a version upgrade in Multi-AZ deployments?
Which of the following problems can occur when performing a version upgrade in Multi-AZ deployments?
Which factor limits the number of read replicas for a production DB in Amazon RDS?
Which factor limits the number of read replicas for a production DB in Amazon RDS?
What is a recommended practice when implementing DB connection retries in your application during a failover?
What is a recommended practice when implementing DB connection retries in your application during a failover?
Which type of replication is utilized by Read Replicas in Amazon RDS?
Which type of replication is utilized by Read Replicas in Amazon RDS?
What is the impact of creating a read replica from a snapshot of a MySQL database instance?
What is the impact of creating a read replica from a snapshot of a MySQL database instance?
What should be considered when using Multi-AZ deployments in relation to system upgrades?
What should be considered when using Multi-AZ deployments in relation to system upgrades?
Which of the following is NOT a characteristic of Multi-AZ deployments in Amazon RDS?
Which of the following is NOT a characteristic of Multi-AZ deployments in Amazon RDS?
What limitation applies to the maximum number of Oracle or MS SQL database instances in Amazon RDS without a user license?
What limitation applies to the maximum number of Oracle or MS SQL database instances in Amazon RDS without a user license?
Which feature is NOT part of the automated management provided by Amazon RDS?
Which feature is NOT part of the automated management provided by Amazon RDS?
Which of the following is a correct statement regarding Amazon RDS Custom?
Which of the following is a correct statement regarding Amazon RDS Custom?
What is the default maintenance window duration scheduled by AWS for Amazon RDS instances if not defined by the customer?
What is the default maintenance window duration scheduled by AWS for Amazon RDS instances if not defined by the customer?
Which of the following best describes the use of endpoints in Amazon RDS?
Which of the following best describes the use of endpoints in Amazon RDS?
When creating an Amazon RDS instance with encryption at rest, which must be done first?
When creating an Amazon RDS instance with encryption at rest, which must be done first?
Which of the following statements about scaling Amazon RDS instances is correct?
Which of the following statements about scaling Amazon RDS instances is correct?
What unique characteristic is associated with Windows integrated authentication in Amazon RDS?
What unique characteristic is associated with Windows integrated authentication in Amazon RDS?
What limitations exist for operations requiring the DB instance to be taken offline during maintenance?
What limitations exist for operations requiring the DB instance to be taken offline during maintenance?
Which of these is NOT a recommended characteristic of a DB subnet group in Amazon RDS?
Which of these is NOT a recommended characteristic of a DB subnet group in Amazon RDS?
What happens if a Read Replica is created from an unencrypted Amazon RDS DB instance?
What happens if a Read Replica is created from an unencrypted Amazon RDS DB instance?
What is the main distinction of Amazon RDS for OLTP compared to analytical databases?
What is the main distinction of Amazon RDS for OLTP compared to analytical databases?
In a multi-AZ configuration, what is true regarding DB data transfer during replication?
In a multi-AZ configuration, what is true regarding DB data transfer during replication?
In terms of scalability, what is indicated by the term 'push-button scaling' in Amazon RDS?
In terms of scalability, what is indicated by the term 'push-button scaling' in Amazon RDS?
How does Amazon RDS ensure redundancy in its managed service?
How does Amazon RDS ensure redundancy in its managed service?
Which of the following statements about Amazon RDS billing is NOT true?
Which of the following statements about Amazon RDS billing is NOT true?
What could be a potential anti-pattern when using Amazon RDS?
What could be a potential anti-pattern when using Amazon RDS?
What is a limitation when using Microsoft SQL with Amazon RDS?
What is a limitation when using Microsoft SQL with Amazon RDS?
How does Amazon RDS handle encryption between applications and RDS DB instances?
How does Amazon RDS handle encryption between applications and RDS DB instances?
What is NOT a valid alternative to Amazon RDS for database solutions?
What is NOT a valid alternative to Amazon RDS for database solutions?
In what scenario would you choose to use AWS Database Migration Service (DMS) over the Schema Conversion Tool (SCT) for migrating a database to AWS?
In what scenario would you choose to use AWS Database Migration Service (DMS) over the Schema Conversion Tool (SCT) for migrating a database to AWS?
Which of the following statements is NOT true regarding Amazon RDS read replicas?
Which of the following statements is NOT true regarding Amazon RDS read replicas?
Which of the following is a valid high availability approach for databases, but would not be considered strongly consistent?
Which of the following is a valid high availability approach for databases, but would not be considered strongly consistent?
You are migrating a database from an on-premises server to AWS. The database is large and complex, with a significant amount of data. Which of the following tools would be the best choice for this migration?
You are migrating a database from an on-premises server to AWS. The database is large and complex, with a significant amount of data. Which of the following tools would be the best choice for this migration?
Which of the following statements accurately describes the behavior of read replicas in a multi-AZ RDS deployment during a failover event?
Which of the following statements accurately describes the behavior of read replicas in a multi-AZ RDS deployment during a failover event?
Which of the following statements accurately describes the behavior of DB snapshots when an RDS instance is deleted?
Which of the following statements accurately describes the behavior of DB snapshots when an RDS instance is deleted?
What happens to the DNS endpoint of a restored database from a snapshot?
What happens to the DNS endpoint of a restored database from a snapshot?
You have a critical application that requires high availability and strong consistency. Which of the following database solutions would be the most appropriate choice, based on the information provided in the content?
You have a critical application that requires high availability and strong consistency. Which of the following database solutions would be the most appropriate choice, based on the information provided in the content?
Which of the following statements is true regarding the limitations of Amazon RDS read replicas?
Which of the following statements is true regarding the limitations of Amazon RDS read replicas?
You are migrating a database from an on-premises server to AWS. The database is relatively small and simple, and you want to minimize downtime during the migration process. Which of the following tools would be the best choice for this migration?
You are migrating a database from an on-premises server to AWS. The database is relatively small and simple, and you want to minimize downtime during the migration process. Which of the following tools would be the best choice for this migration?
What is the primary benefit of using Amazon RDS?
What is the primary benefit of using Amazon RDS?
What is the default limit of Amazon RDS DB instances a customer can have?
What is the default limit of Amazon RDS DB instances a customer can have?
What is required for Windows integrated authentication for SQL in Amazon RDS?
What is required for Windows integrated authentication for SQL in Amazon RDS?
What is the purpose of a maintenance window in Amazon RDS?
What is the purpose of a maintenance window in Amazon RDS?
What is the benefit of Amazon RDS Custom?
What is the benefit of Amazon RDS Custom?
What is the purpose of an endpoint in Amazon RDS?
What is the purpose of an endpoint in Amazon RDS?
What is the primary use case for Amazon RDS?
What is the primary use case for Amazon RDS?
What type of data does Amazon RDS support?
What type of data does Amazon RDS support?
What is the benefit of push-button scaling in Amazon RDS?
What is the benefit of push-button scaling in Amazon RDS?
What is the purpose of Amazon RDS?
What is the purpose of Amazon RDS?
Which of the following statements is TRUE regarding Multi-AZ configurations in RDS?
Which of the following statements is TRUE regarding Multi-AZ configurations in RDS?
Which of the following is NOT a good fit for Amazon RDS?
Which of the following is NOT a good fit for Amazon RDS?
What is the primary method for encrypting data at rest in Amazon RDS?
What is the primary method for encrypting data at rest in Amazon RDS?
Which of the following is TRUE about billing for Amazon RDS?
Which of the following is TRUE about billing for Amazon RDS?
Which of the following is TRUE regarding scaling Amazon RDS instances?
Which of the following is TRUE regarding scaling Amazon RDS instances?
Which of the following storage types are available for Amazon RDS instances?
Which of the following storage types are available for Amazon RDS instances?
Which of the following statements about Amazon RDS snapshots is true?
Which of the following statements about Amazon RDS snapshots is true?
What is the main purpose of using the AWS Database Migration Service (DMS)?
What is the main purpose of using the AWS Database Migration Service (DMS)?
What type of database engines support the creation of read replicas in Amazon RDS?
What type of database engines support the creation of read replicas in Amazon RDS?
In what scenario can a DB instance reboot be required?
In what scenario can a DB instance reboot be required?
Which statement is true regarding the promotion of read replicas in MySQL and MariaDB?
Which statement is true regarding the promotion of read replicas in MySQL and MariaDB?
What happens to a read replica if its source DB instance is deleted without first deleting the replica?
What happens to a read replica if its source DB instance is deleted without first deleting the replica?
Which of the following statements about DB snapshots is accurate?
Which of the following statements about DB snapshots is accurate?
Which high availability option is preferable if DynamoDB cannot be used?
Which high availability option is preferable if DynamoDB cannot be used?
What limitation applies when creating read replicas for PostgreSQL?
What limitation applies when creating read replicas for PostgreSQL?
Which operation is performed to ensure backups do not impact performance in Multi-AZ deployments?
Which operation is performed to ensure backups do not impact performance in Multi-AZ deployments?
How does the AWS Database Migration Service (DMS) facilitate the migration process?
How does the AWS Database Migration Service (DMS) facilitate the migration process?
Which functionality is incorrect regarding read replicas of multi-AZ source databases?
Which functionality is incorrect regarding read replicas of multi-AZ source databases?
Which of the following statements about IAM database authentication in Amazon RDS is true?
Which of the following statements about IAM database authentication in Amazon RDS is true?
Which characteristic is NOT applicable to AWS RDS snapshots?
Which characteristic is NOT applicable to AWS RDS snapshots?
Which of the following is a key difference between Multi-AZ deployments and Read Replicas in Amazon RDS?
Which of the following is a key difference between Multi-AZ deployments and Read Replicas in Amazon RDS?
What is the primary use case for Read Replicas in Amazon RDS?
What is the primary use case for Read Replicas in Amazon RDS?
Which of the following statements about version upgrades in Multi-AZ deployments is TRUE?
Which of the following statements about version upgrades in Multi-AZ deployments is TRUE?
Which of the following database engines supports the creation of Read Replicas in Amazon RDS?
Which of the following database engines supports the creation of Read Replicas in Amazon RDS?
Which of the following is a recommended approach for ensuring high availability in a Multi-AZ RDS deployment?
Which of the following is a recommended approach for ensuring high availability in a Multi-AZ RDS deployment?
What is a key limitation of Read Replicas in Amazon RDS?
What is a key limitation of Read Replicas in Amazon RDS?
What is the purpose of automated backups in a Multi-AZ environment?
What is the purpose of automated backups in a Multi-AZ environment?
What is the recommended storage type for Multi-AZ RDS DB instances?
What is the recommended storage type for Multi-AZ RDS DB instances?
Which of the following is NOT a valid method for creating Read Replicas of an Amazon RDS database instance?
Which of the following is NOT a valid method for creating Read Replicas of an Amazon RDS database instance?
When would it be appropriate to consider using Amazon EC2 for a database rather than Amazon RDS?
When would it be appropriate to consider using Amazon EC2 for a database rather than Amazon RDS?
Which statement accurately describes the Amazon RDS managed service?
Which statement accurately describes the Amazon RDS managed service?
What is the maximum number of Amazon RDS DB instances a customer can create by default?
What is the maximum number of Amazon RDS DB instances a customer can create by default?
Which of the following features is specific to Amazon RDS Custom?
Which of the following features is specific to Amazon RDS Custom?
What is the primary use case for Amazon RDS?
What is the primary use case for Amazon RDS?
Which authentication method is exclusively used with SQL Server in Amazon RDS?
Which authentication method is exclusively used with SQL Server in Amazon RDS?
What happens to Amazon RDS instances during a scheduled maintenance window?
What happens to Amazon RDS instances during a scheduled maintenance window?
Which statement is true about the Amazon RDS Endpoint?
Which statement is true about the Amazon RDS Endpoint?
Which database engines are allowed exceptions for the limit on the number of DB instances?
Which database engines are allowed exceptions for the limit on the number of DB instances?
What characteristic distinguishes Amazon RDS from traditional database solutions?
What characteristic distinguishes Amazon RDS from traditional database solutions?
Which of these operations might require a DB instance to be taken offline during maintenance?
Which of these operations might require a DB instance to be taken offline during maintenance?
What must be done to encrypt an existing Amazon RDS database?
What must be done to encrypt an existing Amazon RDS database?
Which statement about the DB subnet group is accurate?
Which statement about the DB subnet group is accurate?
What is a characteristic of the scaling process in Amazon RDS?
What is a characteristic of the scaling process in Amazon RDS?
In terms of billing, how is storage for automated backups treated in Amazon RDS?
In terms of billing, how is storage for automated backups treated in Amazon RDS?
Which of the following statements correctly describes the nature of encryption at rest in Amazon RDS?
Which of the following statements correctly describes the nature of encryption at rest in Amazon RDS?
Which of the following is a limitation associated with Microsoft SQL Server in Amazon RDS?
Which of the following is a limitation associated with Microsoft SQL Server in Amazon RDS?
What happens during the scaling of compute resources in Amazon RDS?
What happens during the scaling of compute resources in Amazon RDS?
What is NOT considered an anti-pattern for using Amazon RDS?
What is NOT considered an anti-pattern for using Amazon RDS?
When configuring multi-AZ for Amazon RDS, what is charged to the user?
When configuring multi-AZ for Amazon RDS, what is charged to the user?
Which storage type offers the highest performance for Amazon RDS databases?
Which storage type offers the highest performance for Amazon RDS databases?
What happens to read replicas if the source DB instance is deleted without deleting the replicas?
What happens to read replicas if the source DB instance is deleted without deleting the replicas?
How long does it typically take for a read replica to be promoted to primary?
How long does it typically take for a read replica to be promoted to primary?
Which of the following statements is true about DB snapshots in Amazon RDS?
Which of the following statements is true about DB snapshots in Amazon RDS?
What is a fundamental limitation of read replicas for PostgreSQL compared to MySQL and MariaDB?
What is a fundamental limitation of read replicas for PostgreSQL compared to MySQL and MariaDB?
Which of the following is NOT a recommended high availability approach for databases?
Which of the following is NOT a recommended high availability approach for databases?
What is the minimum performance requirement for the compute capacity of a read replica compared to its source database?
What is the minimum performance requirement for the compute capacity of a read replica compared to its source database?
Which feature is available for read replicas in Amazon RDS?
Which feature is available for read replicas in Amazon RDS?
Which statement is true regarding the AWS Database Migration Service (DMS)?
Which statement is true regarding the AWS Database Migration Service (DMS)?
What characterizes the storage of AWS RDS DB snapshots?
What characterizes the storage of AWS RDS DB snapshots?
Which of the following is a key function of the Schema Conversion Tool (SCT)?
Which of the following is a key function of the Schema Conversion Tool (SCT)?
What characteristic distinguishes read replicas from multi-AZ deployments in Amazon RDS?
What characteristic distinguishes read replicas from multi-AZ deployments in Amazon RDS?
What is required to enable read replicas in Amazon RDS?
What is required to enable read replicas in Amazon RDS?
Which statement about multi-AZ RDS deployments is true?
Which statement about multi-AZ RDS deployments is true?
During a failover event in a multi-AZ deployment, what happens to the DNS configuration?
During a failover event in a multi-AZ deployment, what happens to the DNS configuration?
What is a limitation regarding the secondary DB in a multi-AZ configuration?
What is a limitation regarding the secondary DB in a multi-AZ configuration?
Which of these storage options is recommended for multi-AZ RDS DB instances?
Which of these storage options is recommended for multi-AZ RDS DB instances?
Which of the following best describes read replicas in Amazon RDS?
Which of the following best describes read replicas in Amazon RDS?
What happens to the automated backups setting of a read replica in Amazon RDS?
What happens to the automated backups setting of a read replica in Amazon RDS?
How many read replicas can be created for a production DB instance in Amazon RDS?
How many read replicas can be created for a production DB instance in Amazon RDS?
Which of the following statements is true regarding version upgrades in multi-AZ deployments?
Which of the following statements is true regarding version upgrades in multi-AZ deployments?
What happens to the encryption status of a Read Replica created from an unencrypted Amazon RDS instance?
What happens to the encryption status of a Read Replica created from an unencrypted Amazon RDS instance?
What is the primary method for encrypting data at rest in Amazon RDS?
What is the primary method for encrypting data at rest in Amazon RDS?
What is the purpose of a DB subnet group in Amazon RDS?
What is the purpose of a DB subnet group in Amazon RDS?
What is the minimum level of compute performance required for a read replica compared to its source database?
What is the minimum level of compute performance required for a read replica compared to its source database?
What happens to the DNS endpoint of a restored database from a snapshot?
What happens to the DNS endpoint of a restored database from a snapshot?
What is the exception to the rule of encryption at rest?
What is the exception to the rule of encryption at rest?
What is the correct behavior of automated backups in a Multi-AZ environment?
What is the correct behavior of automated backups in a Multi-AZ environment?
What is the primary use case for using DB subnet groups?
What is the primary use case for using DB subnet groups?
What is the maximum storage size for an Amazon RDS instance for Microsoft SQL Server?
What is the maximum storage size for an Amazon RDS instance for Microsoft SQL Server?
What is the purpose of Amazon RDS encryption at rest?
What is the purpose of Amazon RDS encryption at rest?
What is a requirement for creating a read replica in a different region?
What is a requirement for creating a read replica in a different region?
What happens to the compute performance of a read replica compared to its source database instance?
What happens to the compute performance of a read replica compared to its source database instance?
What is a benefit of using DB snapshots?
What is a benefit of using DB snapshots?
What happens to a read replica when the source database instance is deleted?
What happens to a read replica when the source database instance is deleted?
What is a recommended high availability approach for databases?
What is a recommended high availability approach for databases?
What happens when you promote a read replica to a primary DB instance?
What happens when you promote a read replica to a primary DB instance?
What is the purpose of the AWS Database Migration Service?
What is the purpose of the AWS Database Migration Service?
What is a benefit of using the Schema Conversion Tool?
What is a benefit of using the Schema Conversion Tool?
What is a monitoring tool that integrates with Amazon RDS?
What is a monitoring tool that integrates with Amazon RDS?
What happens to read replicas in a multi-AZ failover?
What happens to read replicas in a multi-AZ failover?
What is a key difference between Multi-AZ deployments and Read Replicas in Amazon RDS?
What is a key difference between Multi-AZ deployments and Read Replicas in Amazon RDS?
Which of the following correctly describes the capabilities of Read Replicas?
Which of the following correctly describes the capabilities of Read Replicas?
What happens when a version upgrade is processed in a Multi-AZ deployment?
What happens when a version upgrade is processed in a Multi-AZ deployment?
Which statement about DB parameter groups in Amazon RDS is accurate?
Which statement about DB parameter groups in Amazon RDS is accurate?
What is the role of automated backups in a Multi-AZ deployment?
What is the role of automated backups in a Multi-AZ deployment?
Which of the following scenarios would require implementing DB connection retries in an application?
Which of the following scenarios would require implementing DB connection retries in an application?
Which statement regarding read-only replicas is correct?
Which statement regarding read-only replicas is correct?
How does Amazon Aurora differ concerning storage compared to traditional RDS database engines?
How does Amazon Aurora differ concerning storage compared to traditional RDS database engines?
What is NOT a characteristic of Multi-AZ RDS deployments?
What is NOT a characteristic of Multi-AZ RDS deployments?
What happens to the secondary DB instance in a Multi-AZ configuration?
What happens to the secondary DB instance in a Multi-AZ configuration?
In a Multi-AZ Amazon RDS deployment, what happens to read replicas when the primary database instance fails over?
In a Multi-AZ Amazon RDS deployment, what happens to read replicas when the primary database instance fails over?
Which of the following is a valid approach for migrating databases to AWS, minimizing application downtime?
Which of the following is a valid approach for migrating databases to AWS, minimizing application downtime?
What happens to the DNS endpoint of a restored database from a snapshot?
What happens to the DNS endpoint of a restored database from a snapshot?
What is the minimum level of compute performance required for a read replica compared to its source database?
What is the minimum level of compute performance required for a read replica compared to its source database?
Which of the following storage types are available for Amazon RDS instances?
Which of the following storage types are available for Amazon RDS instances?
Which of the following is TRUE regarding scaling Amazon RDS instances?
Which of the following is TRUE regarding scaling Amazon RDS instances?
What is the maximum storage size for an Amazon RDS instance?
What is the maximum storage size for an Amazon RDS instance?
Which of the following is TRUE about billing for Amazon RDS?
Which of the following is TRUE about billing for Amazon RDS?
Which of the following is TRUE about a DB subnet group in Amazon RDS?
Which of the following is TRUE about a DB subnet group in Amazon RDS?
What happens to the encryption status of a Read Replica created from an encrypted Amazon RDS instance?
What happens to the encryption status of a Read Replica created from an encrypted Amazon RDS instance?
What is the minimum compute performance required for a read replica compared to its source database?
What is the minimum compute performance required for a read replica compared to its source database?
Which of the following is NOT a feature supported by Amazon RDS?
Which of the following is NOT a feature supported by Amazon RDS?
Which of the following database engines is NOT supported by Amazon RDS?
Which of the following database engines is NOT supported by Amazon RDS?
Which of the following statements is TRUE about Amazon RDS read replicas?
Which of the following statements is TRUE about Amazon RDS read replicas?
What is the purpose of Read Replicas in Amazon RDS?
What is the purpose of Read Replicas in Amazon RDS?
What is the maximum number of Amazon RDS DB instances a customer can have by default?
What is the maximum number of Amazon RDS DB instances a customer can have by default?
Which of the following is a benefit of using a Multi-AZ deployment in Amazon RDS?
Which of the following is a benefit of using a Multi-AZ deployment in Amazon RDS?
What is the key difference between Multi-AZ deployments and Read Replicas in Amazon RDS?
What is the key difference between Multi-AZ deployments and Read Replicas in Amazon RDS?
Which of the following is a valid method for creating read replicas of an Amazon RDS database instance?
Which of the following is a valid method for creating read replicas of an Amazon RDS database instance?
Which of the following is TRUE about automated backups in Amazon RDS Read Replicas?
Which of the following is TRUE about automated backups in Amazon RDS Read Replicas?
Which of the following is NOT a feature supported by Amazon RDS read replicas?
Which of the following is NOT a feature supported by Amazon RDS read replicas?
Which of the following is a valid use case for Read Replicas in Amazon RDS?
Which of the following is a valid use case for Read Replicas in Amazon RDS?
What is the recommended storage type for Multi-AZ RDS DB instances?
What is the recommended storage type for Multi-AZ RDS DB instances?
What is the purpose of a DB subnet group in Amazon RDS?
What is the purpose of a DB subnet group in Amazon RDS?
Which of the following statements is TRUE about Multi-AZ deployments in Amazon RDS?
Which of the following statements is TRUE about Multi-AZ deployments in Amazon RDS?
Which of the following statements is TRUE about Amazon RDS snapshots?
Which of the following statements is TRUE about Amazon RDS snapshots?
What happens to Read Replicas when a failover occurs in a Multi-AZ RDS deployment?
What happens to Read Replicas when a failover occurs in a Multi-AZ RDS deployment?
Which of the following is NOT a recommended approach for high availability in Amazon RDS?
Which of the following is NOT a recommended approach for high availability in Amazon RDS?
What is the maximum number of instances that can be involved in a replication chain for Amazon RDS Read Replicas?
What is the maximum number of instances that can be involved in a replication chain for Amazon RDS Read Replicas?
Which of the following is NOT supported for Amazon RDS Read Replicas?
Which of the following is NOT supported for Amazon RDS Read Replicas?
Which of the following database engines support Read Replicas in Amazon RDS?
Which of the following database engines support Read Replicas in Amazon RDS?
Which of the following is an example of an anti-pattern when using Amazon RDS?
Which of the following is an example of an anti-pattern when using Amazon RDS?
When you create a Read Replica of an encrypted Amazon RDS instance in a different region, what happens to the encryption?
When you create a Read Replica of an encrypted Amazon RDS instance in a different region, what happens to the encryption?
Which of the following statements is TRUE about scaling Amazon RDS instances?
Which of the following statements is TRUE about scaling Amazon RDS instances?
What is a DB subnet group in Amazon RDS?
What is a DB subnet group in Amazon RDS?
What happens to automated backups in a Multi-AZ RDS environment?
What happens to automated backups in a Multi-AZ RDS environment?
What is the maximum storage size for an Amazon RDS instance?
What is the maximum storage size for an Amazon RDS instance?
Which of the following is TRUE about billing for Amazon RDS?
Which of the following is TRUE about billing for Amazon RDS?
What happens to the encryption status of a Read Replica created from an encrypted Amazon RDS instance?
What happens to the encryption status of a Read Replica created from an encrypted Amazon RDS instance?
Which of the following storage types are available for Amazon RDS instances?
Which of the following storage types are available for Amazon RDS instances?
Which of the following is a valid approach for migrating databases to AWS, minimizing application downtime?
Which of the following is a valid approach for migrating databases to AWS, minimizing application downtime?
Study Notes
Overview of Amazon RDS
- Amazon RDS is a managed service for launching and managing relational databases on AWS, primarily designed for Online Transaction Processing (OLTP).
- It supports structured, relational data and aims to replace on-premises database instances seamlessly.
- Automated backups and maintenance occur within customer-defined windows, allowing scaling and patching operations.
Database Engines Supported
- Amazon RDS supports various database engines, including MySQL, PostgreSQL, MariaDB, Oracle, SQL Server, and Amazon Aurora.
Access and Management
- RDS does not provide root access to the underlying EC2 instances, with an exception for RDS Custom, which permits OS-level access for limited engines.
- A DB instance represents a database environment with specified compute and storage resources, accessed via endpoints retrievable through various AWS tools.
Instance Limitations and Maintenance
- Customers can have a maximum of 40 RDS instances, with specific limitations on Oracle and SQL Server instances unless licenses are provided.
- Maintenance windows, either customer-defined or automatically scheduled, allow for modifications such as software patching.
Use Cases and Alternatives
- If RDS lacks support for a use case, databases can be run on EC2.
- Anti-patterns highlight common pitfalls in architecture that may suggest more suitable methods or services.
Encryption and Data Security
- RDS instances and snapshots can be encrypted at rest using AWS KMS, with all associated elements also encrypted.
- Existing databases cannot be directly encrypted; a new encrypted instance must be created from a snapshot.
DB Subnet Groups
- DB subnet groups consist of multiple private subnets in a VPC, ensuring subnets in at least two Availability Zones for resilience.
Billing and Provisioning
- Backup storage for automated RDS backups is free up to the provisioned EBS volume size, with fees for extra S3 storage.
- Instances can be billed either on-demand or through reserved instances, with the latter having fixed attributes.
Scalability
- Storage allocation can only be increased, not decreased; scaling occurs without downtime for storage but requires downtime for compute scaling.
- All DB types, except MS SQL, can scale up to a maximum size of 64 TiB.
Performance
- RDS utilizes EBS volumes for storage, with options available such as General Purpose (SSD), Provisioned IOPS (SSD), and Magnetic.
High Availability: Multi-AZ and Read Replicas
- Multi-AZ deployments provide DR capabilities with synchronous replication to a standby instance in a different Availability Zone.
- Read Replicas are asynchronous and for offloading read-heavy workloads, enabling horizontal scaling across different instances.
Snapshots and Backups
- User-initiated DB Snapshots allow manual backups and state restoration, with backups taken within defined windows and potential I/O suspensions.
- Snapshots remain on S3 until manually deleted and can be shared across AWS accounts.
Migration to AWS
- AWS Database Migration Service (DMS) facilitates the seamless migration of databases to AWS, supporting various database types with minimal downtime.
- The Schema Conversion Tool (SCT) assists in migrating schemas between databases.
Monitoring and Security
- Automated monitoring tools and integrations with CloudWatch, EventBridge, and CloudTrail enhance RDS operational oversight.
- IAM database authentication provides a passwordless sign-in method for MySQL and PostgreSQL using authentication tokens.
Considerations for Choices
- When possible, prefer DynamoDB due to its inherent fault tolerance; if not feasible, Amazon Aurora offers significant redundancy features.
- Multi-AZ RDS is a robust option if neither of the prior choices is viable, with snapshot strategies to protect against data corruption.
Overview of Amazon RDS
- Amazon RDS is a managed service for launching and managing relational databases on AWS, primarily designed for Online Transaction Processing (OLTP).
- It supports structured, relational data and aims to replace on-premises database instances seamlessly.
- Automated backups and maintenance occur within customer-defined windows, allowing scaling and patching operations.
Database Engines Supported
- Amazon RDS supports various database engines, including MySQL, PostgreSQL, MariaDB, Oracle, SQL Server, and Amazon Aurora.
Access and Management
- RDS does not provide root access to the underlying EC2 instances, with an exception for RDS Custom, which permits OS-level access for limited engines.
- A DB instance represents a database environment with specified compute and storage resources, accessed via endpoints retrievable through various AWS tools.
Instance Limitations and Maintenance
- Customers can have a maximum of 40 RDS instances, with specific limitations on Oracle and SQL Server instances unless licenses are provided.
- Maintenance windows, either customer-defined or automatically scheduled, allow for modifications such as software patching.
Use Cases and Alternatives
- If RDS lacks support for a use case, databases can be run on EC2.
- Anti-patterns highlight common pitfalls in architecture that may suggest more suitable methods or services.
Encryption and Data Security
- RDS instances and snapshots can be encrypted at rest using AWS KMS, with all associated elements also encrypted.
- Existing databases cannot be directly encrypted; a new encrypted instance must be created from a snapshot.
DB Subnet Groups
- DB subnet groups consist of multiple private subnets in a VPC, ensuring subnets in at least two Availability Zones for resilience.
Billing and Provisioning
- Backup storage for automated RDS backups is free up to the provisioned EBS volume size, with fees for extra S3 storage.
- Instances can be billed either on-demand or through reserved instances, with the latter having fixed attributes.
Scalability
- Storage allocation can only be increased, not decreased; scaling occurs without downtime for storage but requires downtime for compute scaling.
- All DB types, except MS SQL, can scale up to a maximum size of 64 TiB.
Performance
- RDS utilizes EBS volumes for storage, with options available such as General Purpose (SSD), Provisioned IOPS (SSD), and Magnetic.
High Availability: Multi-AZ and Read Replicas
- Multi-AZ deployments provide DR capabilities with synchronous replication to a standby instance in a different Availability Zone.
- Read Replicas are asynchronous and for offloading read-heavy workloads, enabling horizontal scaling across different instances.
Snapshots and Backups
- User-initiated DB Snapshots allow manual backups and state restoration, with backups taken within defined windows and potential I/O suspensions.
- Snapshots remain on S3 until manually deleted and can be shared across AWS accounts.
Migration to AWS
- AWS Database Migration Service (DMS) facilitates the seamless migration of databases to AWS, supporting various database types with minimal downtime.
- The Schema Conversion Tool (SCT) assists in migrating schemas between databases.
Monitoring and Security
- Automated monitoring tools and integrations with CloudWatch, EventBridge, and CloudTrail enhance RDS operational oversight.
- IAM database authentication provides a passwordless sign-in method for MySQL and PostgreSQL using authentication tokens.
Considerations for Choices
- When possible, prefer DynamoDB due to its inherent fault tolerance; if not feasible, Amazon Aurora offers significant redundancy features.
- Multi-AZ RDS is a robust option if neither of the prior choices is viable, with snapshot strategies to protect against data corruption.
Overview of Amazon RDS
- Amazon RDS is a managed service for launching and managing relational databases on AWS, primarily designed for Online Transaction Processing (OLTP).
- It supports structured, relational data and aims to replace on-premises database instances seamlessly.
- Automated backups and maintenance occur within customer-defined windows, allowing scaling and patching operations.
Database Engines Supported
- Amazon RDS supports various database engines, including MySQL, PostgreSQL, MariaDB, Oracle, SQL Server, and Amazon Aurora.
Access and Management
- RDS does not provide root access to the underlying EC2 instances, with an exception for RDS Custom, which permits OS-level access for limited engines.
- A DB instance represents a database environment with specified compute and storage resources, accessed via endpoints retrievable through various AWS tools.
Instance Limitations and Maintenance
- Customers can have a maximum of 40 RDS instances, with specific limitations on Oracle and SQL Server instances unless licenses are provided.
- Maintenance windows, either customer-defined or automatically scheduled, allow for modifications such as software patching.
Use Cases and Alternatives
- If RDS lacks support for a use case, databases can be run on EC2.
- Anti-patterns highlight common pitfalls in architecture that may suggest more suitable methods or services.
Encryption and Data Security
- RDS instances and snapshots can be encrypted at rest using AWS KMS, with all associated elements also encrypted.
- Existing databases cannot be directly encrypted; a new encrypted instance must be created from a snapshot.
DB Subnet Groups
- DB subnet groups consist of multiple private subnets in a VPC, ensuring subnets in at least two Availability Zones for resilience.
Billing and Provisioning
- Backup storage for automated RDS backups is free up to the provisioned EBS volume size, with fees for extra S3 storage.
- Instances can be billed either on-demand or through reserved instances, with the latter having fixed attributes.
Scalability
- Storage allocation can only be increased, not decreased; scaling occurs without downtime for storage but requires downtime for compute scaling.
- All DB types, except MS SQL, can scale up to a maximum size of 64 TiB.
Performance
- RDS utilizes EBS volumes for storage, with options available such as General Purpose (SSD), Provisioned IOPS (SSD), and Magnetic.
High Availability: Multi-AZ and Read Replicas
- Multi-AZ deployments provide DR capabilities with synchronous replication to a standby instance in a different Availability Zone.
- Read Replicas are asynchronous and for offloading read-heavy workloads, enabling horizontal scaling across different instances.
Snapshots and Backups
- User-initiated DB Snapshots allow manual backups and state restoration, with backups taken within defined windows and potential I/O suspensions.
- Snapshots remain on S3 until manually deleted and can be shared across AWS accounts.
Migration to AWS
- AWS Database Migration Service (DMS) facilitates the seamless migration of databases to AWS, supporting various database types with minimal downtime.
- The Schema Conversion Tool (SCT) assists in migrating schemas between databases.
Monitoring and Security
- Automated monitoring tools and integrations with CloudWatch, EventBridge, and CloudTrail enhance RDS operational oversight.
- IAM database authentication provides a passwordless sign-in method for MySQL and PostgreSQL using authentication tokens.
Considerations for Choices
- When possible, prefer DynamoDB due to its inherent fault tolerance; if not feasible, Amazon Aurora offers significant redundancy features.
- Multi-AZ RDS is a robust option if neither of the prior choices is viable, with snapshot strategies to protect against data corruption.
Overview of Amazon RDS
- Amazon RDS is a managed service for launching and managing relational databases on AWS, primarily designed for Online Transaction Processing (OLTP).
- It supports structured, relational data and aims to replace on-premises database instances seamlessly.
- Automated backups and maintenance occur within customer-defined windows, allowing scaling and patching operations.
Database Engines Supported
- Amazon RDS supports various database engines, including MySQL, PostgreSQL, MariaDB, Oracle, SQL Server, and Amazon Aurora.
Access and Management
- RDS does not provide root access to the underlying EC2 instances, with an exception for RDS Custom, which permits OS-level access for limited engines.
- A DB instance represents a database environment with specified compute and storage resources, accessed via endpoints retrievable through various AWS tools.
Instance Limitations and Maintenance
- Customers can have a maximum of 40 RDS instances, with specific limitations on Oracle and SQL Server instances unless licenses are provided.
- Maintenance windows, either customer-defined or automatically scheduled, allow for modifications such as software patching.
Use Cases and Alternatives
- If RDS lacks support for a use case, databases can be run on EC2.
- Anti-patterns highlight common pitfalls in architecture that may suggest more suitable methods or services.
Encryption and Data Security
- RDS instances and snapshots can be encrypted at rest using AWS KMS, with all associated elements also encrypted.
- Existing databases cannot be directly encrypted; a new encrypted instance must be created from a snapshot.
DB Subnet Groups
- DB subnet groups consist of multiple private subnets in a VPC, ensuring subnets in at least two Availability Zones for resilience.
Billing and Provisioning
- Backup storage for automated RDS backups is free up to the provisioned EBS volume size, with fees for extra S3 storage.
- Instances can be billed either on-demand or through reserved instances, with the latter having fixed attributes.
Scalability
- Storage allocation can only be increased, not decreased; scaling occurs without downtime for storage but requires downtime for compute scaling.
- All DB types, except MS SQL, can scale up to a maximum size of 64 TiB.
Performance
- RDS utilizes EBS volumes for storage, with options available such as General Purpose (SSD), Provisioned IOPS (SSD), and Magnetic.
High Availability: Multi-AZ and Read Replicas
- Multi-AZ deployments provide DR capabilities with synchronous replication to a standby instance in a different Availability Zone.
- Read Replicas are asynchronous and for offloading read-heavy workloads, enabling horizontal scaling across different instances.
Snapshots and Backups
- User-initiated DB Snapshots allow manual backups and state restoration, with backups taken within defined windows and potential I/O suspensions.
- Snapshots remain on S3 until manually deleted and can be shared across AWS accounts.
Migration to AWS
- AWS Database Migration Service (DMS) facilitates the seamless migration of databases to AWS, supporting various database types with minimal downtime.
- The Schema Conversion Tool (SCT) assists in migrating schemas between databases.
Monitoring and Security
- Automated monitoring tools and integrations with CloudWatch, EventBridge, and CloudTrail enhance RDS operational oversight.
- IAM database authentication provides a passwordless sign-in method for MySQL and PostgreSQL using authentication tokens.
Considerations for Choices
- When possible, prefer DynamoDB due to its inherent fault tolerance; if not feasible, Amazon Aurora offers significant redundancy features.
- Multi-AZ RDS is a robust option if neither of the prior choices is viable, with snapshot strategies to protect against data corruption.
Overview of Amazon RDS
- Amazon RDS is a managed service for launching and managing relational databases on AWS, primarily designed for Online Transaction Processing (OLTP).
- It supports structured, relational data and aims to replace on-premises database instances seamlessly.
- Automated backups and maintenance occur within customer-defined windows, allowing scaling and patching operations.
Database Engines Supported
- Amazon RDS supports various database engines, including MySQL, PostgreSQL, MariaDB, Oracle, SQL Server, and Amazon Aurora.
Access and Management
- RDS does not provide root access to the underlying EC2 instances, with an exception for RDS Custom, which permits OS-level access for limited engines.
- A DB instance represents a database environment with specified compute and storage resources, accessed via endpoints retrievable through various AWS tools.
Instance Limitations and Maintenance
- Customers can have a maximum of 40 RDS instances, with specific limitations on Oracle and SQL Server instances unless licenses are provided.
- Maintenance windows, either customer-defined or automatically scheduled, allow for modifications such as software patching.
Use Cases and Alternatives
- If RDS lacks support for a use case, databases can be run on EC2.
- Anti-patterns highlight common pitfalls in architecture that may suggest more suitable methods or services.
Encryption and Data Security
- RDS instances and snapshots can be encrypted at rest using AWS KMS, with all associated elements also encrypted.
- Existing databases cannot be directly encrypted; a new encrypted instance must be created from a snapshot.
DB Subnet Groups
- DB subnet groups consist of multiple private subnets in a VPC, ensuring subnets in at least two Availability Zones for resilience.
Billing and Provisioning
- Backup storage for automated RDS backups is free up to the provisioned EBS volume size, with fees for extra S3 storage.
- Instances can be billed either on-demand or through reserved instances, with the latter having fixed attributes.
Scalability
- Storage allocation can only be increased, not decreased; scaling occurs without downtime for storage but requires downtime for compute scaling.
- All DB types, except MS SQL, can scale up to a maximum size of 64 TiB.
Performance
- RDS utilizes EBS volumes for storage, with options available such as General Purpose (SSD), Provisioned IOPS (SSD), and Magnetic.
High Availability: Multi-AZ and Read Replicas
- Multi-AZ deployments provide DR capabilities with synchronous replication to a standby instance in a different Availability Zone.
- Read Replicas are asynchronous and for offloading read-heavy workloads, enabling horizontal scaling across different instances.
Snapshots and Backups
- User-initiated DB Snapshots allow manual backups and state restoration, with backups taken within defined windows and potential I/O suspensions.
- Snapshots remain on S3 until manually deleted and can be shared across AWS accounts.
Migration to AWS
- AWS Database Migration Service (DMS) facilitates the seamless migration of databases to AWS, supporting various database types with minimal downtime.
- The Schema Conversion Tool (SCT) assists in migrating schemas between databases.
Monitoring and Security
- Automated monitoring tools and integrations with CloudWatch, EventBridge, and CloudTrail enhance RDS operational oversight.
- IAM database authentication provides a passwordless sign-in method for MySQL and PostgreSQL using authentication tokens.
Considerations for Choices
- When possible, prefer DynamoDB due to its inherent fault tolerance; if not feasible, Amazon Aurora offers significant redundancy features.
- Multi-AZ RDS is a robust option if neither of the prior choices is viable, with snapshot strategies to protect against data corruption.
Overview of Amazon RDS
- Amazon RDS is a managed service for launching and managing relational databases on AWS, primarily designed for Online Transaction Processing (OLTP).
- It supports structured, relational data and aims to replace on-premises database instances seamlessly.
- Automated backups and maintenance occur within customer-defined windows, allowing scaling and patching operations.
Database Engines Supported
- Amazon RDS supports various database engines, including MySQL, PostgreSQL, MariaDB, Oracle, SQL Server, and Amazon Aurora.
Access and Management
- RDS does not provide root access to the underlying EC2 instances, with an exception for RDS Custom, which permits OS-level access for limited engines.
- A DB instance represents a database environment with specified compute and storage resources, accessed via endpoints retrievable through various AWS tools.
Instance Limitations and Maintenance
- Customers can have a maximum of 40 RDS instances, with specific limitations on Oracle and SQL Server instances unless licenses are provided.
- Maintenance windows, either customer-defined or automatically scheduled, allow for modifications such as software patching.
Use Cases and Alternatives
- If RDS lacks support for a use case, databases can be run on EC2.
- Anti-patterns highlight common pitfalls in architecture that may suggest more suitable methods or services.
Encryption and Data Security
- RDS instances and snapshots can be encrypted at rest using AWS KMS, with all associated elements also encrypted.
- Existing databases cannot be directly encrypted; a new encrypted instance must be created from a snapshot.
DB Subnet Groups
- DB subnet groups consist of multiple private subnets in a VPC, ensuring subnets in at least two Availability Zones for resilience.
Billing and Provisioning
- Backup storage for automated RDS backups is free up to the provisioned EBS volume size, with fees for extra S3 storage.
- Instances can be billed either on-demand or through reserved instances, with the latter having fixed attributes.
Scalability
- Storage allocation can only be increased, not decreased; scaling occurs without downtime for storage but requires downtime for compute scaling.
- All DB types, except MS SQL, can scale up to a maximum size of 64 TiB.
Performance
- RDS utilizes EBS volumes for storage, with options available such as General Purpose (SSD), Provisioned IOPS (SSD), and Magnetic.
High Availability: Multi-AZ and Read Replicas
- Multi-AZ deployments provide DR capabilities with synchronous replication to a standby instance in a different Availability Zone.
- Read Replicas are asynchronous and for offloading read-heavy workloads, enabling horizontal scaling across different instances.
Snapshots and Backups
- User-initiated DB Snapshots allow manual backups and state restoration, with backups taken within defined windows and potential I/O suspensions.
- Snapshots remain on S3 until manually deleted and can be shared across AWS accounts.
Migration to AWS
- AWS Database Migration Service (DMS) facilitates the seamless migration of databases to AWS, supporting various database types with minimal downtime.
- The Schema Conversion Tool (SCT) assists in migrating schemas between databases.
Monitoring and Security
- Automated monitoring tools and integrations with CloudWatch, EventBridge, and CloudTrail enhance RDS operational oversight.
- IAM database authentication provides a passwordless sign-in method for MySQL and PostgreSQL using authentication tokens.
Considerations for Choices
- When possible, prefer DynamoDB due to its inherent fault tolerance; if not feasible, Amazon Aurora offers significant redundancy features.
- Multi-AZ RDS is a robust option if neither of the prior choices is viable, with snapshot strategies to protect against data corruption.
Overview of Amazon RDS
- Amazon RDS is a managed service for launching and managing relational databases on AWS, primarily designed for Online Transaction Processing (OLTP).
- It supports structured, relational data and aims to replace on-premises database instances seamlessly.
- Automated backups and maintenance occur within customer-defined windows, allowing scaling and patching operations.
Database Engines Supported
- Amazon RDS supports various database engines, including MySQL, PostgreSQL, MariaDB, Oracle, SQL Server, and Amazon Aurora.
Access and Management
- RDS does not provide root access to the underlying EC2 instances, with an exception for RDS Custom, which permits OS-level access for limited engines.
- A DB instance represents a database environment with specified compute and storage resources, accessed via endpoints retrievable through various AWS tools.
Instance Limitations and Maintenance
- Customers can have a maximum of 40 RDS instances, with specific limitations on Oracle and SQL Server instances unless licenses are provided.
- Maintenance windows, either customer-defined or automatically scheduled, allow for modifications such as software patching.
Use Cases and Alternatives
- If RDS lacks support for a use case, databases can be run on EC2.
- Anti-patterns highlight common pitfalls in architecture that may suggest more suitable methods or services.
Encryption and Data Security
- RDS instances and snapshots can be encrypted at rest using AWS KMS, with all associated elements also encrypted.
- Existing databases cannot be directly encrypted; a new encrypted instance must be created from a snapshot.
DB Subnet Groups
- DB subnet groups consist of multiple private subnets in a VPC, ensuring subnets in at least two Availability Zones for resilience.
Billing and Provisioning
- Backup storage for automated RDS backups is free up to the provisioned EBS volume size, with fees for extra S3 storage.
- Instances can be billed either on-demand or through reserved instances, with the latter having fixed attributes.
Scalability
- Storage allocation can only be increased, not decreased; scaling occurs without downtime for storage but requires downtime for compute scaling.
- All DB types, except MS SQL, can scale up to a maximum size of 64 TiB.
Performance
- RDS utilizes EBS volumes for storage, with options available such as General Purpose (SSD), Provisioned IOPS (SSD), and Magnetic.
High Availability: Multi-AZ and Read Replicas
- Multi-AZ deployments provide DR capabilities with synchronous replication to a standby instance in a different Availability Zone.
- Read Replicas are asynchronous and for offloading read-heavy workloads, enabling horizontal scaling across different instances.
Snapshots and Backups
- User-initiated DB Snapshots allow manual backups and state restoration, with backups taken within defined windows and potential I/O suspensions.
- Snapshots remain on S3 until manually deleted and can be shared across AWS accounts.
Migration to AWS
- AWS Database Migration Service (DMS) facilitates the seamless migration of databases to AWS, supporting various database types with minimal downtime.
- The Schema Conversion Tool (SCT) assists in migrating schemas between databases.
Monitoring and Security
- Automated monitoring tools and integrations with CloudWatch, EventBridge, and CloudTrail enhance RDS operational oversight.
- IAM database authentication provides a passwordless sign-in method for MySQL and PostgreSQL using authentication tokens.
Considerations for Choices
- When possible, prefer DynamoDB due to its inherent fault tolerance; if not feasible, Amazon Aurora offers significant redundancy features.
- Multi-AZ RDS is a robust option if neither of the prior choices is viable, with snapshot strategies to protect against data corruption.
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Description
Learn about Amazon Relational Database Service, a managed service for launching and managing relational databases on AWS. Understand its use cases, features, and benefits.