Pls confirm the total number of servers in a Call Manager Cluster is 8 or 9. Is it 1 publisher + 7 Subscribers OR 1 Publisher + 8 Subscribers?
Good question! (1 Pub + 8 Subs)
The following guidelines apply to Cisco Unified CM Release 6.x:
â¢Within a cluster, a maximum of 8 servers can be enabled with the Cisco CallManager Service. Other servers may be used for more dedicated functions such as TFTP, publisher, music on hold, and so forth.
Have a look at this design;
Figure 8-6 1:1 Redundancy Configuration Options (#5);
Cisco Unified Communications SRND Based on Cisco Unified Communications Manager 6.x
Hope this helps!