E10-001 Question #16: Real Exam Question with Answer & Explanation

Question

Options

• AUses semiconductor-based solid state media
• BPerforms data search and retrieval sequentially
• CPerforms rotational speed at more than 30000 rpm
• DWrites once and reads many

Explanation

Enterprise Flash Drives Traditionally, high I/O requirements of an application were met by simply using more disks. Availability of enterprise class flash drives (EFD) has changed the scenario. Flash drives, also referred as solid state drives (SSDs), are new generation drives that deliver ultra-high performance required by performance-sensitive applications. Flash drives use semiconductor-based solid state memory (flash memory) to store and retrieve data. Unlike conventional mechanical disk drives, flash drives contain no moving parts; therefore, they do not have seek and rotational latencies. Flash drives deliver a high number of IOPS with very low response times. Also, being a semiconductor-based device, flash drives consume less power, compared to mechanical drives. Flash drives are especially suited for applications with small block size and random-read workloads that require consistently low (less than 1 ms) response times. Applications that need to process massive amounts of information quickly, such as currency exchange, electronic trading systems, and real-time data feed processing, benefit from Overall, flash drives provide better total cost of ownership (TCO) even though they cost more on $/GB basis. By implementing flash drives, businesses can meet application performance requirements with far fewer drives (approximately 20 to 30 times less number of drives compared to conventional mechanical drives). This reduction not only provides savings in terms of drive cost, but also translates to savings for power, cooling, and space consumption. Fewer numbers of drives in the environment also means less cost for managing the storage.

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