Maybe I haven't been specific enough. I meant, usually, if we run a long maintenance, then logged in users are blocked with a message "server busy". So using parallel maintenance should not block users with "server busy"?
This is not the issue of upgrade SERP. But serverip.dat in this case contains the value: 192.168.88.12:1301, so this is local IP of the server with SERP.
Anyway I don't understand what do you me...
