1. Oracle Communications Diameter Signaling Router Cloud Disaster Recovery Guide
  2. General Description

6 General Description

The DSR disaster recovery procedure falls into five basic categories. It is primarily dependent on the state of the NOAM servers and SOAM servers.

Table 6-1 DSR disaster recovery procedure

Recovery Servers
Recovery of the entire network from a total outage. [5.1.1 Recovery Scenario 1 (Complete Server Outage)]
  • All NOAM servers failed
  • All SOAM servers failed
  • 1 or more MP servers failed
Recovery of one or more servers with at least one NOAM server intact. [5.1.2 Recovery Scenario 2 (Partial Server Outage with one NOAM server intact and both SOAMs failed)]
  • 1 or more NOAM servers intact
  • All SOAM servers or MP servers failed
Recovery of the NOAM pair with one or more SOAM servers intact. [5.1.3 Recovery Scenario 3 (Partial Server Outage with all NOAM servers failed and one SOAM server intact)]
  • All NOAM servers failed
  • 1 or more SOAM servers intact
Recovery of one or more server with at least one NOAM and one SOAM server intact. [5.1.4 Recovery Scenario 4 (Partial Server Outage with one NOAM server and one SOAM server intact)]
  • 1 or more NOAM servers intact
  • 1 or more SOAM servers intact
  • 1 or more MP servers failed
Recovery of the NOAM pair with DR-NOAM available and one or more SOAM servers intact. [5.1.5 Recovery Scenario 5 (Partial Server Outage with all NOAM servers failed with DR-NOAM available)]
  • All NOAM servers failed
  • 1 or more SOAM servers intact
  • DR-NOAM available
Recovery of one or more server with corrupt databases that cannot be restored via replication from the active parent node. [5.1.6 Recovery Scenario 6 (Database Recovery)]
  • Server having a corrupted database.