DESIGNED FOR DISTRIBUTED, HIGH PERFORMANCE, AND SCALABLE SYSTEMS
High availability is necessary in mission critical applications and networks, like banking systems, railway and aircraft operating and control systems, gateways, transport networks, and routers. System downtime costs money, and there are often penalties associated with system downtime.
High availability is a system wide service where the entire application will be restored at failover, and Enea meets the industry requirement that a highly available telecom application shall be restored within 50 ms.
A distributed system is usually a cluster of network connected nodes, containing components that run operating systems. Components are the smallest units that can be repaired, and are most often pieces of hardware.
The components of a node can be organized, or grouped. A Service Unit is a group of components, a Service Group contains of or several Service Units, and a Service Instance is a ‘logical’ application using a recovery mechanism – based on Service Groups.
SOFTWARE MANAGEMENT – IN-SERVICE UPGRADE
In-Service Upgrade is a vital part of any solution where “cold” system upgrades equate to a significant device failure and, therefore, “down time.” Enea Element’s In-Service Upgrade Manager supports both individual component and node-level upgrade steps within a running cluster with no service impact. It uses the HA services to coordinate failover and/or restarts of components to best accommodate the restart of software from old to new versions.
ENEA ELEMENT HIGH AVAILABILITY
Provides support for multiple redundancy models
- N-Way Active
- Supports load balancing configurations
- Restart of a component (fail in place)
- Failover of a component to a redundant component
- Restart of a node
- Failover of a node to a redundant node
- Restart of the cluster
Health monitoring can be done at three levels
- Passive monitoring – watch for death and react
- Internal active monitoring – component monitors itself and reports errors if/when they occur
- External Active Monitoring – actively monitor a component’s health
- For replication of an application’s dynamic state information to support rapid service recovery
- In Service Upgrade (ISU)
- Image Management tools
Chassis Management (optional)
- Targets ATCA platforms (Advanced Telecommunication Computing Architecture)
- Supports SA Forums Hardware Platform Interface (HPI)
- OpenHPI or vendor HPI
- Handles resources of an ATCA chassi