I am doing some experimenting and testing of our HA solution and have the current set-up.
1 x Domain Controller
2 x SQL Server's with MSSQL 2014 on them.
All server OS's run 2012 R2 fully patched. This is a PoC / Self experiment. I don't have full redundant networks and production level infrastructure so please keep that in mind.
I have a 2 node cluster configured WITHOUT configuring any quorum between MSSQLA and MSSQLB. I did a hard stop on MSSQLA (which was primary) and MSSQLB immediately came up. I was under the impression that default was Node Majority. In this case: 2x nodes and 1 lost = 1 = not majority.
What reason is there that the cluster still seems to work? Is this due to the dynamic quorum/witness features?