Cisco Cisco IP Contact Center Release 4.6.2 Prospecto
11-10
Cisco Unified Contact Center Enterprise 7.5 SRND
Chapter 11 Sizing Cisco Unified Communications Manager Servers
Unified CM Redundancy
Figure 11-1
Basic Redundancy Schemes
In
, the five options shown all provide 1:1 subscriber redundancy. Option 1 is used for
clusters supporting fewer than 150 Unified CCE agents on any supported version of Unified CM.
Options 2 through 5 illustrate increasingly larger clusters. In this figure, for deployments with
Unified CM 7.0 and Unified CVP (not IP IVR), N is equal to 1000. For deployments with IP IVR, N is
equal to 500. For other types of deployments, use the Cisco Unified CM Capacity Tool or the Unified
Communications Sizing Tool. In all types of deployments, the exact number of servers will depend on
the hardware platforms chosen or required, as determined by the Cisco Unified CM Capacity Tool or the
Unified Communications Sizing Tool.
Options 2 through 5 illustrate increasingly larger clusters. In this figure, for deployments with
Unified CM 7.0 and Unified CVP (not IP IVR), N is equal to 1000. For deployments with IP IVR, N is
equal to 500. For other types of deployments, use the Cisco Unified CM Capacity Tool or the Unified
Communications Sizing Tool. In all types of deployments, the exact number of servers will depend on
the hardware platforms chosen or required, as determined by the Cisco Unified CM Capacity Tool or the
Unified Communications Sizing Tool.
Figure 11-2
1:1 Redundancy Configuration Options
126039
M
M
M
M
M
M
M
Cost-efficient redundancy
Degraded service during upgrades
Not Recommended
Backup
Backup
Backup
2:1 REDUNDANCY SCHEME
1:1 REDUNDANCY SCHEME
High availability during upgrades
Simplified configuration
M
M
250894
Maximum of 150 agents
Maximum of (1*N) agents
Maximum of (2*N) agents
Publisher and
Backup Subscriber
Primary
Backup
Publisher and TFTP Server(s)
Primary
1
M
M
2
Backup
Publisher and TFTP Server(s)
Primary
M
M
3
Maximum of (3*N) agents
Backup
Primary
M
M
Publisher and TFTP Server(s)
Publisher and TFTP Server(s)
4
5
Maximum of (4*N) agents
Backup
Primary
M
M
Backup
Primary
M
M
Backup
Primary
M
M
Backup
Primary
M
M
Backup
Primary
M
M
Backup
Primary
M
M
Backup
Primary
M
M