Database Group Replication Data Content

Database group replication data cannot be compromised and is guaranteed to be replicated throughout the cluster to ensure that failover is not disruptive. Replication data includes:

• User management data, user credentials for authentication, and user access control lists (ACL) for authorization are included.
• The Local Configuration View (LCV) is a small dataset that contains the modifications users make to a targeted device configuration only to reduce the latency introduced when replicating larger datasets.
• Distributed locking data contains information for when an SDM lock has been placed on a targeted device for a specific operation to ensure that no two operations can occur concurrently on the same device.
• NF device group details are created when a device is added to SDM for management. This dataset provides the information required for SDM to communicate with the targeted product plugin and provide relevant hardware, firmware, configuration and reachability status.
• The SDM configuration dataset contains required user-customized configuration information for SDM services. For example, when the following types of changes are made in the configuration service, they are replicated to all hosts in the SDM cluster:
  • User
  • Global parameter variables
  • Reusable configuration module (RCM)
  • Offline configuration
• The fault sequence number, which is a global unique ID, is required to give distributed items uniqueness.
• Product plugin data is replicated, which includes its status and version information.