Przemo.w,   Witht he 2950 being a 9th generation server it is too old to run Essentials directly. With the older generation you would need to install OpenManage Server Administrator (OMSA) on the server and then run OpenManage Essentials (OME) on the system you are monitoring it from. That should alleviate the issues you're seeing.  Let us know how it goes.
Hello,   I have at work PE2950 with idrac5, the server is running ms windows server 2008r2 std. I have installed on it OM Essentials, OM System management software and OM BMC utilities. I am not very familiar with servers - especially software - there is too many entries on support page for my service tag, I did some googling and as result I have installed those mentioned software, I get myself familiar with OMSA (nice thing :) ). But I am not sure, but I might have some issues with racadm. As far as I read, when I exec racadm from admin cmd it should access drac card installed on server but for some unknown reasons (for me) it "suggest" that there is no rac card or there is no software installed :( If I use racadm with "-r DRAC_IP_ADDR" (remote mode) then it works fine. Would somebody be so nice to point where to look (or what software I'm still missing to install)?    
PowerEdge 2950 with iDRAC5 and racadm