BO4, CMC: status of server, yellow icon

Hi,

on a fresh installed BO4 server (Windows) all servers are up and running but I see a yellow "Server status" icon in the CMC at the InputFileRepository and OutputFileRepository server. All other server have a green status.

I didn't find further information regarding this in the admin guide. What does that status exactly mean, how can I find the reason for this issue?

Thanks!