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The dumb disk is dead: viva the smart disk!

Publication: Computer Technology Review
Publication Date: 01-APR-04 		Format: Online - approximately 880 words
Delivery: Immediate Online Access
Full Article Title: The dumb disk is dead: viva the smart disk!(Golden Anniversary of HDD)

Article Excerpt
Microprocessor performance has largely kept pace with Moore's Law, with performance doubling roughly every 18 months. However, disk performance has not improved at anywhere near the same pace, causing today's CPU to waste more time waiting for data to be read from disk into local memory. The additional microprocessor muscle has given most commercial applications only a partial boost, as predicted by Amdahl's law of balanced system performance.

The gap in raw performance between disk and the CPU/memory complex was huge when the first disks were designed and built 50 years ago, and their basic principles of operation have not changed. Disk capacity has been growing at a tremendous pace, about 60% per year, but the speed of data access has been growing at a slower pace. The average data-transfer rate,...

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