Cisco Prime HA database design

[srahman0220]

Why does Cisco recommend 2 databases (active and standby) on both servers (Primary and secondary) for CISCO Prime HA solution?

[marce1000]

 - If the secondary is a full-standby node it will  need an up to date copy of the database at all times.

   M.

[srahman0220]

Thanks, I am still not very clear - Will the Active database of Secondary Server not have that info? Why Standby databases on either server?

[marce1000 · Accepted solution]

 Ref : https://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/infrastructure/2-2/administrator/guide/PIAdminBook/config_HA.pdf

File and Database Synchronization
Whenever the HA configuration determines that there is a change on the primary server, it synchronizes
this change with the secondary server. These changes are of two types:
1. Database: These include database updates related to configuration, performance and monitoring
data.
2. File: These include changes to configuration files.
Database changes are synchronized with the help of the Oracle Recovery Manager (RMAN). RMAN
creates the active and standby database and synchronizes the databases when there is any change.
File changes are synchronized using the HTTPS protocol. File synchronization is done either in:
• Batch: This category includes files that are not updated frequently (such as license files). These files
are synchronized once every 500 seconds.
• Near Real-Time: Files that are updated frequently fall under this category. These files are
synchronized once every 11 seconds.
9-4
Cisco Prime Infrastructure 2.2 Administrator Guide
OL-32123-01
Chapter 9 Configuring High Availability
How High Availability Works
By default, the HA framework is configured to copy all the required configuration data, including:
• Report configurations
• Configuration Templates
• TFTP-root
• Administration settings
• Licensing files
• Key store

HA Server Communications
The primary and secondary HA servers exchange the following messages in order to maintain the health
of the HA system:
• Database Sync: Includes all the information necessary to ensure that the databases on the primary
and secondary servers are running and synchronized.
>...

 M.