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Chapter 2  Grid, Utility Computing and Clusters 

Understanding Grid

There is always a lingering doubt in everyone’s mind, as to what Grid is exactly, and how it differs from other well known architectures such as Cluster and P2P architectures. In this chapter, we will highlight the true nature of Grid and Clustering architectures. We will also look at other buzzwords such as ‘on-demand’ and ‘utility’ computing.

There is a somewhat hazy notion and understanding of Grid and the types of Grids among many IT technologists. Sometimes they do not find a clear demarcation between grids and other related technologies like clusters. We will examine the differences between the Clusters and Grid.

“Oops … Am I in Grid now?”

Another thing that often needs explanation is the concept of On-Demand and Utility Computing Model, which is often termed as Grid Computing.

The Clustering of Servers has been with us for about two decades and it is one of the most widely understood, being deployed in scientific, research and commercial worlds. We are well versed with the concept of aggregating the servers, and view them as the single system image (SSI). Now, with the gradual adoption of grid technologies, one often wonders if grid works with clusters or if it replaces the clustering. How does grid change the whole perspective of the sharing of the servers?

For more information, see the book Oracle 11g Grid and Real Application Clusters 30% off if you buy it directly from Rampant TechPress . 

Written by top Oracle experts, this RAC book has a complete online code depot with ready to use RAC scripts.

Remote DBA Services

Burleson Consulting can offer world-class remote Oracle database support at super-affordable prices.

Our remote Oracle DBA service provides 100% of the remote Oracle database administration needs for your company, and includes 24x7 access to our staff of 100% OCP Certified Oracle DBAs. 

We require a 12 month service commitment and include the following services:

  • Initial configuration review and problem identification
  • Installation of Oracle statistics collection mechanisms and quarterly database growth summaries
  • Hourly monitoring of your Oracle database for pending problems
  • Periodic performance analysis & identification of tuning activities
  • Twenty Four hour Oracle emergency support
  • Reporting and resolving all serious Oracle alert log messages
  • Free use of the BC TablePack, ServerPack and AuditPack services
  • Quick response emergency support for production database outages
  • Four hours of free remote DBA support every month. You can use these free hours for any DBA activity, including database analysis, system design, production migrations or personal mentoring.

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