It is not necessarily for the fastest storage or cluster storage, but just for pure storage, it's really hard to beat. It's just been around as long as anything else.
Oracle ZFS offers high scalability, performance, robust data protection, efficient storage management, and seamless data replication, integrating easily with existing IT infrastructure. However, it involves high implementation and maintenance costs, limited third-party integration, and a complex setup process demanding expert knowledge. Performance can be inconsistent during peak loads, and scalability options are limited compared to competitors.