Term
|
Definition
|
children resource
|
Resource that must be on-line
before a parent resource can be brought on-line and taken off-line
after the parent resource is taken off-line
|
cluster
|
multiple systems connected with
a dedicated communications system and a shared storage system
|
failover
|
similar to switchover, but
orderly shutdown is not possible, service group is just restarted on a
different node
|
failover service group
|
service group that runs on one
system at a time
|
hybrid service group
|
Behaves as a failover group
within a system zone and behaves as a parallel service group across
system zones.
|
node
|
a single system with in the
cluster
|
orderly shutdown
|
unassign the virtual ip address,
stop the application, deport the shared storage
|
orderly startup
|
import the shared storage,
assign the virtual ip address and start the application
|
parallel service group
|
service group that runs on more
than one node at the same time in the cluster
|
parent resource
|
Resource than cannot be brought
on-line until the child resource is brought on-line and must be brought
off-line before the child resource can be brought off-line
|
replicated data cluster (RDC)
|
|
resources
|
hardware or software that is
part of the cluster. Resources are started (brought on line),
stopped (brought off line) and monitored.
|
service group
|
logical grouping of resources
and resource dependencies
|
switchover
|
orderly shutdown of a
service group on one node and an orderly startup of the service group
on a different node
|
system zones
|
|