April 2009
Intermediate to advanced
476 pages
11h 7m
English
book
Information Storage and Management: Storing, Managing, and Protecting Digital Information
by G. Somasundaram, Alok Shrivastava
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Chapter 4. Intelligent Storage System
Business-critical applications require high levels of performance, availability, security, and scalability. A hard disk drive is a core element of storage that governs the performance of any storage system. Some of the older disk array technologies could not overcome performance constraints due to the limitations of a hard disk and its mechanical components. RAID technology made an important contribution to enhancing storage performance and reliability, but hard disk drives even with a RAID implementation could not meet performance requirements of today's applications.
With advancements in technology, a new breed of storage solutions known as an intelligent storage system has evolved. The intelligent storage systems detailed in this chapter are the feature-rich RAID arrays that provide highly optimized I/O processing capabilities. These arrays have an operating environment that controls the management, allocation, and utilization of storage resources. These storage systems are configured with large amounts of memory called cache and use sophisticated algorithms to meet the I/O requirements of performance-sensitive applications.
Components of an Intelligent Storage System
An intelligent storage system consists of four key components: front end, cache, back end, and physical disks
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