"Restart Management Agents" from DCUI will start OpenManage Services. More specifically,  "/usr/lib/ext/dell/srvadmin/bin/dataeng start" will start OpenManage services only.
I cant seem to find a way to restart the OMSA 6.5 service on ESXi 4.1 U1. I do not want to restart all services and I cannot reboot the server. Anyone know of a way? I tried  srvadmin-services.sh restart, but that does not work with the error srvadmin-services.sh: not found Thanks for your help!   
Restart OMSA 6.5 Service Only on ESXi 4.1 U1