Impact of Shared Storage on Apache Cassandra

Shared storage is not recommended for Apache Cassandra due to two main reasons: performance issues and single point of failure. Performance in Cassandra is directly correlated to the performance of a node's disk system, and shared storage devices may struggle with the high IOPS and throughput demands from Cassandra operations such as writes, reads, compaction, repair, and bootstrap. Additionally, using shared storage introduces a single point of failure into the architecture, which can be detrimental to the overall performance and stability of the system.