Following up - https://redpanda.com/blog/why-fsync-is-needed-for-data-safety-in-kafka-or-non-byzantine-protocols https://redpanda.com/blog/why-fsync-is-needed-f

Following up - https://redpanda.com/blog/why-fsync-is-needed-for-data-safety-in-kafka-or-non-byzantine-protocols https://redpanda.com/blog/why-fsync-is-needed-for-data-safet... Try this on your laptop see global data loss - hint: multi-az is not enough Regardless of the replication mechanism you must fsync() your data to prevent global data loss in non-Byzantine protocols.