Can you connect to/browse the terminal from the server?
Can you connect to/browse the server from the terminal?
If either of these answers is "no," then you have a connectivity problem and the terminal may be putting itself into redundancy when it comes up.
If you can connect and read/write/delete in both directions then at some point, turn off all of the terminals at once. Then turn on the last master terminal first. Let it come up all the way. Turn on the problemed terminal second. Let it come up all the way. If it still doesn't come out of redundancy, turn on the rest so your business is back up and running and come back to the forum to report your results.
If you do come back, it would help to have a snippet of the last 3 minutes of the debout on the terminal located in the %iberdir%\tmp folder.