Vivotek NR9782-V2 Vivotek NR9782-v2 User Manual

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VIVOTEK - A Leading Provider of Multimedia Communication Solutions

User's Manual - 153

Below are the denitions of server roles:

1. CMS VAST server: The main access portal for the conguration.

1-1. CMS server is where the Failover conguration takes place.

1-2. CMS continuously polls to check the hearbeats to monitor the statuses of all Active

and Redundant servers.

1-3. CMS regularly backs up the congurations on Active servers.

1-4. CMS assigns redundant server(s) to the takeover of a failed Active server.

1-5. In a Redundant server conguration, the CMS is supposed to be up and running at

all time. If the CMS server fails, the server failover and failback operation will not

take place. It is therefore preferrable to install the CMS server at a high up-time

environment, such as on a VMWare conguration.

2. Active servers: Active VAST servers are the work horses that perform recording and

monitoring tasks.

3. Redundant servers: The Redundant servers are actually active-standbys. They participate

to continue video recording in the event of active server failures. It is recommended for the

Redundant server to have an equivalent or higher processing power than the Active servers.

The same applies for the storage volume and write performance.

Note that you cannot congure a Redundant server by opening a local console.

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Vivotek NR9782-V2 128 Channel Network Video Recorder