The database servers powering Let's Encrypt (2021)
Doesn't mention if they're running Linux/what flavor they're running.  I personally would be wary of running OpenZFS in production on Linux, especially ZFS on root.  It has bit me in the ass too many times on Debian with an update breaking DKMS and rendering my system unbootable.Also, it's very, very strange/worrying to see no mention of disk encryption anywhere in the post or the tuning guide.  For a company with encrypt in the name, that is responsible for the majority of trust on the internet, WTF?  That should be highlighted in their benchmarking. ZFS supports native encryption, MariaDB does encryption, how are they encrypting at rest/transit/use?