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Why Flash Drive Density Will Stop Growing Next Year

Sep 20, 2010, 14:33 (0 Talkback[s])
(Other stories by Jeffrey Layton)

"Recently, Enterprise Storage Forum published an article by Henry Newman in which he argued that lithography limits and disk drive density are going to keep solid state disks (SSDs) from replacing spinning disks. To help explain his argument, I'm going to outline why one of the keys to this equation, SSD density, is in grave danger of stopping next year.

"SSD Technology Review

"The SSDs that we're using today are built on floating gate transistor technology, illustrated in Figure 1 below from Anandtech.

"Between the floating gate and the substrate is the tunnel oxide – the barrier to the floating gate through which the electrons "tunnel" into the floating gate. The transistor either has electrons tunneled into the floating gate (indicating a logical 0) or does not have any electrons tunneled into the floating gate (indicating a logical 1)."

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