OMi provides high availability for the gateway servers to ensure that data gets to its destination and that the users can use OMi in the event of a server failure.
Protected Delivery for Incoming Data
OMi provides protected data delivery for monitor data. Protected data delivery means that the data is not deleted from one data store until it is forwarded to, and stored in, the next data store.
Note HPE Professional Services offers best practice consulting on this subject. For information on how to obtain this service, contact your HPE representative.
High Availability for Service Health
OMi provides high availability for Service Health on the gateway server to ensure that users can continue working with Service Health even if a gateway server fails while a user is in the middle of a session.
When a user logs in to OMi and starts working with Service Health, the session information is registered on a specific gateway server and the load balancer sends all communications related to that session to the same gateway server. If that gateway server fails, the load balancer redirects the session to another gateway server and the session is re-registered on the new gateway server. The user continues working without any interruption of service and without having to log in to OMi again.
The load balancer for the gateway server must be set with stickiness by session enabled. For details, see Configuring Load Balancing.
Caution It is possible that in certain situations, the transition from one gateway server to another could take a few seconds. During this transition, errors may be received for some user actions.