S3QL

A distributed file system designed to run on commodity hardware as part of the Apache Hadoop ecosystem. HDFS provides high-throughput access to application data and is the foundation for storing massive datasets in Hadoop-based data platforms.

A memory-centric distributed storage system that acts as a caching layer between compute frameworks and storage systems. Alluxio accelerates data access by serving hot data from memory, bridging the gap between compute and storage.

A unified, distributed storage system providing object, block, and file storage in a single platform. CEPH is designed for excellent performance, reliability, and scalability, widely used in cloud infrastructure and data center environments.