7.1 Overview

You must take database backup and restore it either on the same or a different cluster. It uses the BSF database (MySQL NDB Cluster) is used to run any command or follow instructions.

Database Model of BSF

BSF database consists of the following two data types:
  • Configuration Data: The configuration data is exclusive for a given site. Thus, an exclusive logical database is created and used by a site to store its configuration data. Using CNC Console and Configuration Management service, an operator can configure data in the respective site only.
  • Binding Data: The binding data is shared across sites. Thus, a common logical database is created and used by all sites. The data is replicated across sites to preserve and share binding information with mated sites. In case of cross sites messaging or a site failure, shared binding data helps in continuity of service.

The following image shows the BSF database model in three different sites:

Figure 7-1 Database Model

Diagram to explain database model