Cloud Computing: Keep Old Apps Private, Make New Apps Public
October 17, 2012
Grazed from NetworkComputing. Author: Joe Onisick.
Private and public clouds have many elements in common, including high degrees of virtualization and automation and a usage-based service model. But that doesn’t mean an enterprise application will run equally well in either environment. Most legacy applications are better off staying in your data center. At the same time, the public cloud should be the first place you consider deploying new applications. Here’s why.
Traditional enterprise applications are better suited to the private cloud. These applications are typically built in a silo-centric fashion and are dependent on the hardware, particularly homegrown applications. Don’t let virtualization fool you; even if the applications are virtualized, they’re still silo-centric. The only difference is it’s now virtual hardware. You’re still working on the outdated model of one application, one OS…
Cloud promoters tout the ability to migrate applications from a private to a public cloud to improve resiliency and business continuity, but the fact is, the technical requirements for such migrations are steep. You have to address Layer 2 adjacency, latency and storage considerations. Cold migrations (that is, with the virtual machine powered down) will require compatible infrastructure and configuration locally and in the chosen cloud, which presents its own set of requirements and complexities…
Read more from the source @ http://www.networkcomputing.com/cloud-computing/keep-old-apps-private-make-new-apps-publ/240009169