MACROMEDIA FLASH MEDIA SERVER 2-USING FLASH MEDIA SERVER EDGE SERVERS Podręcznik Użytkownika Pobierz pdf (Strona 18)

ADOBE CONNECT 6.0

Technical Overview

• Transmits and distributes responses to the clients in each zone.

The flow of data from the edge network to the origin Enterprise Server cluster

Deploying servers in a cluster

About clusters

Enterprise Server offers true enterprise-class scalability with support for single-server or clustered environments.

Organizations that require high availability can choose to deploy Enterprise Server in a cluster. Clusters provide

reliable, redundant deployment that can support thousands of concurrent users.

An Enterprise Server cluster is made up of identical components for which each server provides identical function-

ality. If one server fails, the request is transparently routed to the next. This routing is easily accomplished because

Enterprise Server on-demand and real-time data is replicated across multiple servers for redundancy.

Enterprise Server is designed so that no single point of control or single point of failure exists. Because of this design,

you can add or remove servers from your cluster, and scale your Enterprise Server deployment to meet your organi-

zation’s needs.

In an Enterprise Server cluster configuration, typically a load balancer (or SSL hardware accelerator) is placed in

front of each server farm, where each HTTP connection request is selected by round robin. HTTP requests are

stateless, ensuring that a server failure does not affect the uptime of the system. RTMP connections, such as Acrobat

Connect Professional meetings, do not go through the load balancer. Instead, the Enterprise Server application

server uses a reservation algorithm to select the appropriate servers for the primary meeting instance and the backup

instance. A meeting uses health checks to manage the failover process between the servers.

To provide redundancy and instant failover, when each meeting is instantiated, a primary server is chosen to host

the meeting and a secondary server is chosen as the backup. If the primary server hosting the meeting fails, all

meeting attendees are reconnected to the backup server and the meeting continues with the same meeting content

and enviroment.

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MACROMEDIA FLASH MEDIA SERVER 2-USING FLASH MEDIA SERVER EDGE SERVERS Podręcznik Użytkownika Strona 18