During NBU6.5 deployment, two hostname in client list is the same. But backup job is normal; operation of rebooting backup server is invalid.
1. Check all backup policy in this client, clients’ names is Backupdb and backupdb, the first letter is different.
2. Modify all client names to Backupdb in backup policy, the duplicated client name disappear in client list.
Windows OS do not differentiate upper and lower cases, but NBU differentiate. Even Client names in NBU backup policy is different, the connection to client and the backup operation is normal. Clients list is generated according to client names in NBU backup policy, so duplicated client names appear.