FreeBSD ZFS mirror/raidz
This how-to documents how to setup ZFS and install FreeBSD 9.1 into it. ZFS is a great modern file system (invented by SUN Microsystems) to use under FreeBSD. It is
mirror
GMirror on FreeBSD 6.x/7.x/8.x
Gmirror is a software raid mirror system. It allows to disks or partitions to be mirrored so that in the even of a total drive failure, you can switch