V
vgcreate
Creates a volume group (VG) from two or more physical volumes (PV) for LVM.
vi
The vi editor is a basic Linux text editor. While other editors are more popular, vi may be the only editor you have available in the linux rescue environment.
Virtual Hosts
You can configure multiple Web sites on a single Apache server, by configuring a number of Virtual Hosts in your /etc/httpd/conf/httpd.conf configuration file.
volume group (VG)
A collection of physical volumes (PV) in LVM.