Cisco Systems Servers Manuale Utente

Replication to secondary Cisco Secure ACS servers takes place sequentially 
in the order listed in the Replication list under Replication Partners on the 
CiscoSecure Database Replication page.

The secondary Cisco Secure ACS server receiving the replicated components 
must be configured to accept database replication from the primary 
Cisco Secure ACS server. To configure a secondary Cisco Secure ACS server 
for database replication, see the 

Cisco Secure ACS does not support bidirectional database replication. The 
secondary Cisco Secure ACS server receiving the replicated components 
verifies that the primary Cisco Secure ACS server is not on its Replication 
list. If not, the secondary Cisco Secure ACS server accepts the replicated 
components. If so, it rejects the components.

To replicate user-defined RADIUS vendor and vendor-specific attribute 
(VSA) configurations successfully, user-defined RADIUS vendor and VSA 
definitions to be replicated must be identical on the primary and secondary 
Cisco Secure ACS servers, including the RADIUS vendor slots that the 
user-defined RADIUS vendors occupy. For more information about 
user-defined RADIUS vendors and VSAs, see the 

.

Do not confuse database replication with system backup. Database replication is 
not a replacement for System Backup. While both features provide protection 
from partial or complete server loss, each feature addresses the issue in a different 
way.

System Backup archives data into a format that you can later use to restore the 
configuration if the system fails or the data becomes corrupted. The backup data 
is stored on the local hard drive and can be copied and removed from the system 
for long-term storage. You can store several generations of database backup files.

CiscoSecure Database Replication offers the convenience of copying various 
components of the CiscoSecure database to other Cisco Secure ACS servers. This 
can help you plan a failover AAA architecture and can help reduce the complexity 
of your configuration and maintenance tasks. While it is unlikely, it is possible 
that CiscoSecure Database Replication can propagate a corrupted database to the 
Cisco Secure ACS servers that generate your backup files.