Incremental Replication
One of the key features of AWS SMS is its ability to perform incremental replication of server workloads. When performing a migration, SMS tracks changes to on-premises servers or virtual machines and only replicates the changed data to reduce bandwidth consumption and improve replication times. This approach ensures a more efficient migration process by reducing the amount of time and resources required to transfer server workloads while also minimizing the impact on production systems to ensure negligible downtime during migration.
Guide on Incremental Replication in AWS Server Migration Service
Incremental Replication is a critical concept in AWS Server Migration Service.
What is Incremental Replication?
Incremental Replication is a feature on AWS Server Migration Service which allows applications to be replicated as frequently as every 5 minutes, ensuring very low recovery point objectives (RPO). This way, changes made to the application server can be automatically updated on the replicated server through delta replication.
Why is it important?
It's importance lies in minimizing loss of data while reducing bandwidth consumption. Incremental replication ensures that only the changes since the last replication are transmitted, not the entire application, thereby conserving bandwidth and storage.
How it works?
AWS Server Migration Service first creates full replication of the server then incrementally tracks and replicates changes from the source server to AWS. The replicated servers are stored as Amazon Machine Images (AMIs), and in the event of a disaster or for testing purposes, these servers can be launched and synchronized with minimal configuration.
Exam Tips - Answering Questions on Incremental Replication
In exam scenario, remember the following points:
- Understand the concept of Incremental Replication and its implications on bandwidth and storage savings.
- Be aware that AWS Server Migration Service allows for automated replication every 5 minutes.
- Recognize that the result of Incremental Replication are stored as AMIs which can be launched when required.
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