Cuvinte cheie: cluster, load balancing, scale out, scale up, high availability, redundanță, Linux Virtual Server, IPVS, director, ipvsadm, real servers, LVS-NAT, LVS-DR, LVS-Tun, CIP, VIP, DIP, RIP, DRIP, CRM (Cluster Resource Manager), Heartbeat, Pacemaker, OpenAIS, DRBD, replicare, HSRP