Cisco Cisco Security Manager 4.11 Guía De Instalación

Active user sessions also place a load on the server and should be factored in when deciding on the 
deployment size. For example, an application may not have reached its limit due to the number of 
devices, but could be nearing maximum load due to simultaneous user sessions, which may warrant 
dedicating a server to the application. Security Manager supports more than five concurrent users, 
however maximum number of five real-time event views in Event Viewer can be opened by users at 
anytime. Event Server does not limit the number of Event Viewer instances connecting to it but 
places a hard-limit of 5 concurrent real-time event views across all active Event Viewers.

If you need to deploy AUS with Security Manager, do you require AUS to be highly available or 
survivable in the event of a site disaster or outage? If you reach the scale limits of AUS installed on 
a dedicated server, you need to consider deploying more than one instance of it, and on more than 
one servers. 

There are many factors that affect application performance. These include, but are not limited to the 
followings:

Server and client hardware (for example, processor, memory, and storage technology) 

Number of managed devices, including the type of the devices, and the complexity of the device and 
size of configurations (such as large number of ACLs) 

Event management engine, event volume reported by manage device and logging level 

Number and complexity of policy objects 

Number of simultaneous users and the specific activities the users are performing 

Frequency of configuration deployment or IPS signature update for large number of devices 

Number of devices present in a deployment job 

Network bandwidth and latency, such as between Security Manager clients and the server and 
between the server and the managed devices 

Use of virtualization technology such as VMware ESX 

Use of ACS server for AAA services 

Number of scheduled reports

Reporting engine, event volume reported by managed devices, and event aggregation

Large geographic distances between a Security Manager client and server results in poor client 
responsiveness due to the latency introduced. For example, it is not recommended to use a client in India 
with a server located in California because of the large latency involved. In such cases, we recommend 
that you employ a remote desktop or terminal server arrangement, where the running clients are 
co-located in the same datacenter as the server or nearby at least.

A single server is the simplest deployment scenario, where you install all Security Manager applications 
of interest on the same server. For small-scale security environments with one or two network security 
administrators, a single-server deployment is usually adequate.