The why and how of private clouds

With the interest in cloud computing, but the need for security and control, many enterprises are opting for private clouds

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Second, consider using a self-provisioning subsystem. The power of cloud computing is the ability to access computing capacity as needed (on demand), and the power of using a private cloud should be exactly the same. Users should be able to allocate storage, processing, or other resources without having to contact someone in IT. Also, make sure to build in a subsystem that tracks usage for system management and chargeback to departments.

Finally, continue to factor in the use of public cloud resources. Some open source private cloud offerings, such as Eucalyptus (now a part of Ubuntu Enterprise Cloud), are interface-compatible with public cloud offerings, including Amazon Web Services. This has the potential of allowing the use of public cloud resources, when needed, to support a burst in processing -- in essence, using the private cloud as the first tier and the public cloud as the second tier. This brings you the best of both worlds, but it still requires thinking through security and governance.

This article, "The why and how of private clouds," was originally published at InfoWorld.com. Follow the latest developments in cloud computing at InfoWorld.com.

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