Gvinum

(NOTE: for practical tasks, you should probably see gmirror or graid3 instead of this article.)

Gvinum is a Logical Volume Manager, providing kernel-level software RAID for the FreeBSD (and NetBSD) operating systems. Gvinum is the replacement, since FreeBSD 5.3, for the Vinum Volume Manager, re-written to utilize geom communication methods, and is included in the FreeBSD core distribution. Many of the vinum functions are reproduced in gvinum, but not all.