From the Session Manager Release 8.0, Cassandra clustering is enabled permanently to provide redundant storage of SIP device data on instances of Session Manager. This is applicable for all systems, with and without Avaya Aura® Device Services.
When Avaya Aura® Device Services is in use, Cassandra data distribution uses the administration on the User Data Storage page to identify the Session Manager instances that are within the same datacenter. Every Session Manager instance that is paired with Avaya Aura® Device Services must be a part of a datacenter. Session Manager instances that are not paired with Avaya Aura® Device Services should be a part of datacenter. Session Manager instances should be assigned to datacenter based on the system topology. The best redundancy is obtained when two or more Session Managers are assigned to each data center.
For administering Cassandra data distribution with Avaya Aura® Device Services:
Create a data center.
Assign co-located Session Managers to the data center.
Add the Avaya Aura® Device Services instance to the inventory.
Pair a Session Manager instance with an Avaya Aura® Device Services node.
