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  Oracle Tips by Burleson

The chasm between bandwidth and performance

In addition to the growing gap between storage performance and processor performance is a similar chasm between bandwidth and storage performance. Bandwidth is becoming available at rates that exceed even the improvement in processor performance. Already today, there is a glut of bandwidth that is now available to enterprises for a much lower cost than was ever possible. With almost unlimited bandwidth, the demands on the remainder of the data center only intensify. From the firewall to storage, every aspect of system performance will need to be analyzed for bottlenecks.

Storage densities are increasing, and data access problems are only getting worse. Going forward, storage managers will be required to balance the need for capacity with the need for performance. There are no easy solutions to the problem if the options only include hard disk based JBOD or RAID systems. It is the mechanical aspect of hard drives that ensures they will always be much slower than the server or incapable of filling massive enterprise bandwidth.


The above book excerpt is from:

Oracle RAC & Grid Tuning with Solid State Disk
Expert Secrets for High Performance Clustered Grid Computing

ISBN: 0-9761573-5-7
Mike Ault, Donald K. Burleson

http://www.rampant-books.com/book_2005_2_rac_ssd_tuning.htm  

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