The nds1 server tracks connections via a series of (small) bitmaps.  Today users in the control room needed more connections than the server could handle.

The quick fix is to close down unneeded live streams to the nds1 server (ndscope, dataviewer, dtt, ...).

I am evaluating what is needed to significantly boost these limits. It will require an update and rebuild of daqd for the nds1 servers1.