Cloud Computing Public or Private? How to Choose Cloud Storage
Understanding cloud computing, your data and usage
By: Mike Maxey
Oct. 14, 2008 07:15 AM
Cloud storage is a relatively new concept that is becoming a more recognizable term in industry vernacular. Originally delivered as a service, it gained early popularity with Web 2.0 startups looking to outsource storage administration. As the concept spread and offerings expanded, the industry has now embraced two flavors of cloud storage: public and private. This article reviews the choices a user faces when choosing a private versus public cloud storage offering. It describes data types and identifies scenarios where cloud storage is a good solution and where it is a poor fit. This article also covers usage patterns, security, performance and cost implications to educate the reader on differences between public and private cloud storage.
Public Versus Private, What Is the Difference?
Public clouds typically charge a monthly usage fee per GB combined with bandwidth transfer charges. Users can scale the storage on-demand and will never need to purchase storage hardware. Service providers manage the infrastructure and pool resources into capacity that any customer can claim.
Private clouds are built from software running on customer-supplied commodity hardware. The storage is typically not shared outside the enterprise and full control is retained by the organization. Scaling the cloud is as simple as adding another server to the pool and the self-managing architecture expands the cloud by adding performance and capacity.
Cloud Storage Is Not for All Types of Data
These all have several aspects in common, including huge data sets and file systems, parallel file serving requirements, longevity of file access, and the need for low-cost deployments.
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