AWS (Amazon Web Services) Certification Practice Exam

Which storage class provides resiliency but at a lower redundancy rate compared to standard storage?

1. Standard - IA

2. Reduced Redundancy Storage

3. One Zone - IA

4. Intelligent Tiering

The correct answer is: Reduced Redundancy Storage

The option that provides resiliency with a lower redundancy rate compared to standard storage is Reduced Redundancy Storage (RRS). RRS is specifically designed to provide the same durability as standard storage while using less overhead, which translates into a lower redundancy factor. It achieves this by storing data across multiple facilities within a region, but with a lower level of redundancy, making it suitable for non-critical data that can be easily reproduced. This makes RRS a cost-effective solution for customers who are willing to accept a certain level of risk regarding data loss in exchange for lower storage costs. While it still ensures some degree of data safety, it is not as resilient as the standard storage class, which offers higher durability and redundancy. In contrast, other storage classes mentioned offer different features, capacities, and pricing structures based on varying levels of accessibility, retrieval times, and intended use cases, but do not align with the specification of providing resiliency at a lower redundancy rate in the same way that RRS does.