Had the same thing happen to me. First I placed all servers in the repo to maintenance mode then rebooted the servers for another reason, came back in and removed the servers from maintenance mode.All looked good on the console and it showed everything good, the same night I had multiple Backpcopy failures. I went into the logs and noticed that the first command to place all servers into maintenance mode did not completely finish for 3 servers until 4am the next morning. witch tells me not to trust the icons on the repository. Better yet still since the placing the servers into maintenance mode did not finish until 4am the commands after to remove the servers from maintenance mode where then over written by the first command to place them back into maint mode. And today I yet again now have no servers showing in maintenance mode and had multiple backup copy failures showing servers in maintenance mode. Because of those same 3 servers.