Using EMS HA Monitors

Glossary 83
Glossary
resource instance The actual
monitorable resource. For example, /net/
interfaces/lan/status/lan0 may refer to a
particular network interface installed on
the monitored system.
resource monitor A framework for
selecting resources of interest and
monitoring them according to the user's
criteria. When the resource value
matches the user's criteria, a notification
is sent according to the user's
instructions.
The process that is used to obtain the
status of a resource and send event
notifications if appropriate. A monitor
checks resources on the local system.
The resource monitor maps the physical
resource into a standard interface
understood by the HA subsystem.
S-T
target The target application is notified
when a monitored resource reaches the
condition for which notification was
requested. For example, a target
application could be MC/ServiceGuard
or IT/Operations (ITO).
U-Z
volume group In LVM, a set of physical
volumes whose extents are grouped
together and then made available to
users as logical volumes. A volume
group can be activated by only one node
at a time unless you are using MC/
LockManager. MC/ServiceGuard can
activate a volume group when it starts a
package. A given disk can belong to
only one volume group. A logical
volume can belong to only one volume
group.