https://support.microsoft.com/en-us/topic/kb3198760-fix-error-19432-and-time-out-errors-with-sql-server-2016-alwayson-availability-groups-b61adb96-1574-78ce-1e9f-f017ba3caea7
Fixes an issue in which you receive error 19432 and time-out errors when you use SQL Server 2016 AlwaysOn Availability Groups.
fixerrortimesql
https://www.netapp.com/blog/snapcenter-and-sql-server-always-on-availability-groups-why-back-up-databases-from-all-nodes/
With NetApp SnapCenter software, you can reseed databases on a secondary node without affecting any SQL Server settings and without writing any complex script....
sql serveravailability groupsalwaysback