am going to have a APPSERVER in my SP 2013 farm environment. I would be having 2 WFEs and 1 index server and 2 sql servers with mirroring configured in the SP FARM.

how to handle the redundancy of AppServer in SP 2013 ? In case of a hardware failure of APPSERVER in this farm how to overcome this situation?

I have gone through the below link search-crawl-index for search related things. But i am not able to see anything related to redundancy. Incase of failure of APPSERVER, how the search will be functional ? in case, wfe, it will be decided by NLB,it will failover and switch to 2nd WFE. but what will happen if APPSERVER fails?

1 Answer 1


You would have to add two app servers, or convert the index server to an app server and add one more to create a fault-tolerant farm.

Smallest fault-tolerant farm utilizing virtualization All farm server roles virtualized and distributed across two or four host servers to provide fault tolerance using the minimum number of servers.

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See: Traditional Topologies for SharePoint 2013 in the article Technical diagrams for SharePoint 2013

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