Growth in Private Cloud to Address Concerns over Control and Sovereignty of Data
Cloud computing started with the public cloud and consisted of multitenant services that were hosted by a service provider and addressed the needs of the market, not an individual company. While public cloud offers the benefits of reduced operating personnel costs, greater scalability, and increased agility, some applications — particularly those with strict compliance requirements — require an organization to retain stricter control and sovereignty over the data. These environments triggered the evolution of private cloud.
Private cloud deployments consist of integrating networking, storage, and server hardware with management tools and server virtualization. One of the main benefits of private cloud is that it can be tailored to suit the needs of a specific company or organization. With private cloud deployments, organizations drive higher levels of
automation, provisioning, and deployment orchestration and are able to scale their infrastructure in a way that ensures control over the data in the deployment without having to scale IT staff. Private clouds are well-suited for data-intensive, mission- critical workloads that have high requirements for security, availability, and serviceability as well as for applications that, for compliance reasons, require a greater degree of control and ownership of the data.
While companies are adopting both public cloud and private cloud, IDC data indicates that they are moving more rapidly to private cloud deployments than public cloud deployments over the next three years. In IDC's 2010 survey of IT decision makers, the majority of survey respondents (57%) ranked their likelihood of deploying a private cloud at least a "5" out of "10" (with "10" being most likely), compared with 42% for public cloud. In the same survey, 29% of organizations said they are "currently using" or "plan to use" private clouds, with another 44% "considering" private clouds for their organizations. This data demonstrates both the interest in and the early stage nature of the technology.
While IDC forecasts growth in both public cloud and private cloud, we expect faster growth in server revenue to support private cloud, with private cloud computing server
spending growing from $2.6 billion in 2009 to $5.7 billion in 2014, corresponding to a CAGR of 17.3%. This reflects both a faster growth in actual units shipped for private cloud and significantly higher average selling values (ASVs) for private cloud.
A NEW APPROACH TO DATACENTER ECONOMICS
Combating Virtual Machine Sprawl
As discussed earlier, physical server sprawl was temporarily alleviated by the introduction of virtual machines. However, these same VMs themselves soon led to more server sprawl, but of the virtual kind.
As organizations continue to deploy virtualization, IDC expects the installed base of physical servers to flatten out while the number of virtual machines explodes.