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EMC Glossary

Private cloud

A private cloud is a type of deployment model for cloud computing whereby IT resources—applications, compute, storage, and networking—are delivered as a service by the IT department, on demand, and with payment based on usage.

Who uses a private cloud, and why ?

Mid to large corporate and government entities implement a private cloud to achieve greater business agility, increase efficiency, and gain competitive advantage.

In a traditional IT environment, application software and the supporting hardware is procured, managed, and funded in silos, and generally implemented over a period of months. A private cloud infrastructure enables access to a variety of IT resources in minutes to hours and aligns costs to actual consumption.

By enabling the organization to initiate projects faster, capitalize quickly on new capabilities and revenue opportunities, and respond nimbly to market changes, moving to a private cloud elevates IT from cost center to strategic partner.

How a private cloud works

Virtualization technologies provide the foundation for a private cloud, whereby IT resources are uncoupled from physical devices. To fully capture the benefits of a private cloud requires an infrastructure optimized for virtualization and tightly integrated.

In the private cloud, IT resources are owned and dedicated to a single organization, shared across it, and delivered as a service via the Internet or LAN. Resources are generally located and managed within the organization, but can also be hosted or managed by a third party, which EMC calls Virtual Private Cloud. The majority of Service Providers in EMC’s Velocity Program offer Virtual Private Clouds to mid and large enterprises.

Moving from a traditional IT environment to a private cloud and delivering IT-as-a-service (ITaaS) also requires new roles, skills, and significant operational changes. Users access services through a self-service catalog of pre-defined configurations, with usage metered and charged accordingly.

The most common services offered in the private cloud are:

  • Software as a Service (SaaS)software runs on servers in the organization's data center (or dedicated servers at a third party hosting site), versus installed and managed on user computers. The software is accessed over the Internet or LAN and offered using a variety of pricing models.
  • Infrastructure as a Service (IaaS)compute, storage, networking, and other infrastructure elements (security, tools) are provided from a common pool via Internet or LAN connection. Users manage operating systems, applications, and information running on the infrastructure and pay by usage.
  • Platform as a Service (PaaS)all software and hardware required to build and operate cloud-based applications are provided from a common pool and accessed via Internet or LAN connection. Users pay by use of the platform and control how applications are utilized throughout their lifecycle.

Benefits of a private cloud

A private cloud provides numerous benefits to include:

  • Faster IT implementation and time to value
  • Anywhere access to applications, desktops, and information
  • Higher utilization of IT investments
  • Rapid scalability or re-allocation as demands change
  • Enhanced security and protection of information assets
  • Greater IT staff productivity and across organization

Lower energy, infrastructure, and facility costs

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