Hetzner AX102 Review: The impact of Enterprise NVMe on fsync latency

OP here. We’ve been heavy users of Hetzner's consumer line (like the AX41) for a while, but we ran into significant I/O bottlenecks with our database workloads.

We decided to benchmark the new AX102 to see if the Enterprise NVMe drives (with PLP) actually made a difference compared to standard consumer NVMe.

The TL;DR: The difference in fsync latency is massive. For anyone running Postgres/MySQL on Hetzner, the upgrade to Enterprise NVMe is almost mandatory for data integrity and performance. Happy to answer any questions about the benchmarks!