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Louis Imershein

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Over the last three years, the market has been abuzz with the news that deduplication technology was going to change the economics of flash-based storage systems forever. In fact just recently, in his article War Between SSDs and HDDs Will Escalate Through 2016, industry analyst Ben Woo of Neuralytix, Inc. noted: "In the next two to five years, the only way flash-based storage vendors can challenge HDD-based storage systems on price is by way of data efficiency. The cost per unit of storage ($/GB) of HDDs is still 1/10the cost of NAND flash. However, data efficiency technologies (such as deduplication and/or compression) from a variety of vendors are showing data efficiency ratios that are over 10:1. The cost of SSD storage media is now coming in line with the cost of high-end HDDs." But the fact is, the performance of these all flash storage systems that provide... (more)

Data Efficiency at Scale

The initial wave of data efficiency features for primary storage focus on silos of information organized in terms of individual file systems. Deduplication and compression features provided by some vendors are limited by the scalability of those underlying file systems, essentially the file systems have become silos of optimized data. For example, NetApp deduplication can't scale beyond a 100 TB limit, because that's the limit in size of its WAFL file system. But ask anyone who's ever used NetApp deduplication if they've done it on a 100 TB file system, and you're likely to hea... (more)