Question

two site auto failover when wan link failure


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Hi All,

 

Refer auto failover as below

  • The monitoring nodes and the failover CommServe host(s) periodically check the active CommServe host, and automatically fails over to the standby CommServe host when the active CommServe host is not reachable. The failover occurs only when both the following conditions are satisfied:

    • The monitoring nodes and the failover CommServe host(s) are not able to communicate with the CommServe (Instance001) in the active CommServe host.

    • The monitoring nodes and the failover CommServe host(s) are able to reach the other clients in the network.

 

Compare normal cluster failover concept, it may require third site (witness) decide and trigger failover. But manual did not mention require monitoring nodes in third site.

 

If setting as below, which (nodes / hosts) and how to decide and trigger auto failover when WAN link failure and master commserve still alive?

  • siteA  WAN link connect to siteB
  • siteA have physical master commserve with MediaAgent role backup siteA VM data and replicate to siteB
  • siteB have standby commserve VM and physical MediaAgent backup siteB data and replicate to siteA
  • siteA VM1 and VM2 for monitoring nodes
  • siteB VM3 for monitoring nodes

 


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