Some of the best VPS hosts, like the one below, power their plans with cloud networks to take advantage of server clusters boasting high levels of redundancy and availability. The optimized architecture streamlines operations for the hosting provider, who in turn can choose to pass the savings onto customers. Take a look at our recommendation for affordable cloud-powered VPS:
Rather than being hosted on one single instances of a physical server, hosting is delivered on a virtual partition which draws its resource, such as disk space, from an extensive network of underlying physical servers. If one server goes offline it will have no effect on availability, as the virtual servers will continue to pull resource from the remaining network of servers.