Thank you for the design guide so after reading that I'm thinking two possible scenarios.
1) I can make one controller Master and second one Local
2) I can have both setup as Master and Master Backup
If I go with option 2 will I need to get licenses for both controllers or just one and they will be shared between the two?
Option 1 I am guessing requires separate licenses on both
Also is the failover seamless or clients/AP's lose connectivity?