Description of terms used in resiliency and recovery
This topic provides a brief description of terms related to the following resiliency and recovery solution topics:
Failover Clustering Terms
|
Term |
Description |
See also |
|---|---|---|
|
Failback |
Occurs after a failed Appliance reconnects to the Enterprise Manager and regains control of the endpoints and network devices previously distributed to recipient Appliances. |
|
|
Failed Appliance |
An Appliance that has a malfunction. This occurs when the Enterprise Manager fails to connect to the Appliance at the operating system level for a defined period of time. Attempts by the Enterprise Manager to connect to it through port 13000 result in connection time outs. For example, if the Appliance is unplugged or in the event of a natural disaster. |
|
|
Failover Assignment |
The range of endpoints and network devices transferred to a recipient Appliance after failover. |
|
|
Failover Cluster |
A group of geographically/logically connected Appliances, such as those at a data center. Appliances within a failover cluster that fail, can fail over to other Appliances in the cluster. |
|
|
Failover Clustering |
A resiliency solution implemented with clusters of Appliances. Redundancy is achieved by defining clusters of Appliances that can automatically take over discovery, assessment, and control in case of single or multiple Appliance failure within the cluster/s. |
|
|
Failover Excess |
Number of endpoints that exceed Appliance capacity after a failover. These endpoints are not fully handled by the Appliance, meaning that not all of their host properties are fully resolved, and they will not match policies that depend on such unresolved properties. As a result, relevant actions will not be applied to these endpoints. |
|
|
Failover Scope |
A group of one or more failover clusters. Allows failover across clusters. |
|
|
Original Assignment |
The range of endpoints and network devices originally handled by the recipient Appliance, before failover. |
|
|
Recipient Appliance |
A functioning Appliance managed by the same Enterprise Manager as the failed Appliance which takes over handling of the range of transferred endpoints and network devices after a failover. |
High Availability Terms
Disaster Recovery Terms
|
Term |
Description |
See also |
|---|---|---|
|
Disaster Recovery for Enterprise Manager |
A recovery solution implemented in pairs of two Enterprise Managers. Redundancy is achieved by defining a Recovery Enterprise Manager that is manually triggered to take over from an Enterprise Manager that is no longer functioning as a result of a disaster. |
|
|
Recovery Enterprise Manager |
A backup Enterprise Manager that is manually triggered to take over from an Enterprise Manager that is no longer functioning as a result of a disaster. |
minute read