Fundamentals: Understanding Private Cloud Stacks
Private clouds represent the next stage of data center evolution--virtualization 2.0. They unify server, storage and network resources into a common resource pool, and are controlled by software that automatically allocates workloads, assimilates new hardware and meters usage. By incorporating self-service portals and automated provisioning, private clouds offer the promise of both improved IT efficiency and customer satisfaction.
The exemplars of dedicated private cloud stacks are still small research projects and startups like OpenStack, Eucalyptus and Nimbula. Meanwhile, incumbent data center virtualization and infrastructure management software vendors are scurrying to add cloud-like features to existing products. However, by adding onto systems designed around the notion of traditional servers, their strategy resembles putting a fresh coat of paint on an aging car.
Dedicated private cloud software stacks start with a blank sheet of paper. They are designed to provide a true resource utility, not discrete virtual servers, and offer features and flexibility that are more like Amazon Web Services than is possible with the incumbents’ hypervisorcentric approach. (S4240212)