High Availability (HA) pairing

Last Updated : Dec 19, 2025 |

SBC High Availability pairing deployment

  • Standard SBC deployment requires a pair of SBC Virtual Machines (VMs), wherein one device functions as Primary and the other as Secondary.

  • SBC High Availability (HA) pairs must not be installed on the same physical host to avoid a single point of failure.

EMS high availability pairing deployment

  • EMS can be deployed as a single instance or in a HA pair, wherein one device functions as Primary and the other as Secondary.

  • EMS HA pairs must also be installed on different physical hosts.

When deploying both SBC HA pairs and EMS HA pairs, distribute SBC EMS HA pairs across at least two physical ASP 130 R6.0 hosts.

Figure : 1. The virtual deployment of two ASP 130 R6.0 servers


Image showing the virtualized deployment of two ASP 130 R6.0 servers.


As shown in the image:

  • ASP 130 R6.0 Host 1: EMS 1A, SBC 1A, SBC 2B

  • ASP 130 R6.0 Host 2: EMS 2A, SBC 1B, SBC 2A

This ensures redundancy at both the application layer (HA) and the infrastructure layer (separate ASP 130 hosts).