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VIVOTEK - A Leading Provider of Multimedia Communication Solutions
154 - User's Manual
Multiple Active and Redundant groups can be created.
Active VAST servers Redundant VAST servers
CMS VAST
Active Group Redundant Group
Node 1
Node 2
Node 1
Node 2
Node 3
External storage /
NAS
Network Cameras
. . . . .
Server Group 1
Active VAST servers Redundant VAST servers
Active Group Redundant Group
Node 1
Node 1
Node 2
Server Group 2
LAN
Each Redundant server can serve as the backup for ONE Active server. Depending on
the number of the Active and Redundant servers, if the number of failed servers exceeds
the number of Redundant servers, the failover will be abandoned. For example, if 2 Active
servers failed, and there is only 1 Redundant server available, the second Active server that
failed will be abandoned.
The conditions during the failover are illustrated below:
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