VERITAS Volume Manager 3.1 Administrator's Guide

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volume A virtual disk,
representing an addressable range
of disk blocks used by applications
such as file systems or databases.
A volume is a collectionof fromone
to 32 plexes.
volume configuration device
The volume configuration device
(/dev/vx/config) is the interface
through which all configuration
changes to the volume device
driver are performed.
volume device driver The
driver that forms the virtual disk
drive between the application and
the physical device driver level.
The volume device driver is
accessed through a virtual disk
devicenode whose character device
nodes appear in /dev/vx/rdsk,
and whose block device nodes
appear in /dev/vx/dsk.
volume event log The volume
event log device (/dev/vx/event)
is the interface through which
volume driver events are reported
to the utilities.
vxconfigd The Volume Manager
configuration daemon, which is
responsible for making changes to
the VxVM configuration. This
daemon must be running before
VxVM operations can be
performed.
s2
s2
b#
b0
b#
s0
b0
slave node A node that is not
designated as a master node.
shared disk group A disk group
in which the disks are shared by
multiple hosts (also referred to as
a cluster-shareable disk
group ).
private disk group A disk group
in which the disks are accessed by
one specific host.
node One of the hosts in a cluster.
master node A node that is
distinguished from the other
nodes.