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Flash Memory Summit Coverage - Part 1

By: Jason Aikins and Chris Ramseyer | Editorials in Storage | Posted: Aug 13, 2009 4:08 am

Solid State Performance is Good, ButÂ…


Flash Memory Summit Coverage with Jason Aikins


Korean University Researcher Dr. San-Won Lee is impressed with the performance of solid state drives, but finds their performance to be erratic at times. He noted that Intel's SSDs could write faster than 80MB/s, but Intel chose to artificially limit writes to improve consistency.


Dr. San-Won Lee has recognized that a single SSD is able to outperform ten 15K RPM traditional platter based drives in both price and performance. In the enterprise sometimes just 10% of available HDD space is used to maintain performance. Solid State Drives are able to use their entire capacity without fear of performance drop outs due to rotational latency. When it comes to power, a single SSD uses close to 5 watts and ten 15K HDDs use 704 watts.


Dr. San-Won Lee went further in his presentation and proclaimed that customers should focus on buying IOPS and not performance (measured in MB/s). This takes us back to Rob Pegla's presentation that discussed the boot cycle for Windows 7 and the number of random writes used by the OS just to start the system. By 2012 the cost of IOPS will be 1/10 the price of IOPS of a traditional platter based hard drive!


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