If you're looking for managed hosting you'll find everything you need with managed servers, managed services and professional services and an excellent support team to help you through the rough spots so that you have complete understanding. Technical support, security experts, system administrators and network engineers are all available to manage your infrastructure so that you don't have too.
Colocation may also be an option that you're interested in. Single to multiple server rack colocation is available with customized packages to meet your needs. If you lack space, have temperature control issues or are concerned with security, then this is the way to go. State-of-the art data centers are extremely secure and have strict environmental controls including smoke detectors, fire detectors and surveillance cameras.