So I started to work with HA and I'm on a new job, in a new company that has already HA implemented, but nobody can remember who created or if it's working.
1) Availability Groups are in sync with it's replicas by log files, right? So the primary replica sends information from the LOG files to the secondary.
2) With log shipping, I need a job to backup log from primary, copy it to another drive, send it to the netword, and then another job in the secondary replica to restore this log into the database. I dont need this naymore with Availability groups right? Primary replica already sends log data directly from the log file to the secondary replica. Or is this wrong?
3) I ran a query and I noticed that there aren't backups in this server ( primary) since 2017, and logs since 2018. Is this a problem for Availability groups? with no log backup files, there's no information to send to the replica. Or 2) is right already?