Backups are failing with Socket Read error
Recently i have observed that full backups are failing with EC=21. Where as incremental bacups are running fine. Recently we have upgraded our netbackup from 6.5.5 to 18.104.22.168. We are taking the incrmental backups on Data domain and full backups on to tapes. All the clients are Window NT servers.
Please suggest what needs to be done.