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Re: st: SSD vs RAM


From   "Sergiy Radyakin" <serjradyakin@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: SSD vs RAM
Date   Mon, 3 Nov 2008 09:48:25 -0500

Hello David,

SSD is a large flash memory piece particularly optimized for
durability (wear-levelling) and otherwise appear as HDD. It retains
information after the power is turned off.
RAM is faster but does not retain information after the power is off.
Wikipedia is quite explicit in describing an SSD:
http://en.wikipedia.org/wiki/Solid-state_drive

The technology you are thinking about has been around for some time
and is called ReadyBoost:
http://en.wikipedia.org/wiki/ReadyBoost

Also see here:
http://www.sandisk.com/Readyboost

You can buy a ReadyBoost 8GB module for ~$17 from e.g. www.newegg.com
(not affiliated, related, or implied....)

Hope this helps.
Sergiy Radyakin

On Sun, Nov 2, 2008 at 6:36 PM, David Airey <david.airey@vanderbilt.edu> wrote:
> What's the difference between a solid state hard drive and RAM? Is the
> access of a solid state hard drive a lot slower than RAM? Could Stata use a
> SSD for very large data sets, "cheaply"?
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