FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms.| The FreeBSD Project
ZFS has proven itself to be a reliable and trustworthy filesystem over many years of use. Its RAID-Z level, an advanced form of RAID-5, had a major flaw in its initial implementation: users couldn't add disks to a RAID-Z array. There was no easy way to expand it after initial creation, which meant creating a| FreeBSD Foundation