==== 4K drives ====
https://savagedlight.me/2012/07/15/freebsd-zfs-advanced-format/

https://calomel.org/zfs_health_check_script.html

https://superuser.com/questions/608612/4k-hard-drives-freebsd-gpart-and-zfs

[[https://gist.github.com/pvalkone/8942370|Create a ZFS pool on FreeBSD 10.0-RELEASE with Advanced Format (4K sector) drives]]

[[https://github.com/ross/zfs-periodic/tree/master/etc|zfs-periodic]]


[[https://ruhighload.com/index.php/2013/01/21/%d0%be%d0%bf%d1%82%d0%b8%d0%bc%d0%b8%d0%b7%d0%b0%d1%86%d0%b8%d1%8f-freebsd-%d0%bf%d0%be%d0%b4-%d0%b2%d1%8b%d1%81%d0%be%d0%ba%d0%b8%d0%b5-%d0%bd%d0%b0%d0%b3%d1%80%d1%83%d0%b7%d0%ba%d0%b8/|Оптимизация FreeBSD под высокие нагрузки]]




[[https://gist.github.com/tracphil/4353170|pfctl cheat sheet]]

https://serverfault.com/questions/58766/creating-pflog-interface