Linked by Thom Holwerda on Sun 14th Apr 2013 20:30 UTC
Hardware, Embedded Systems "In the past five years, flash memory has progressed from a promising accelerator, whose place in the data center was still uncertain, to an established enterprise component for storing performance-critical data. It's rise to prominence followed its proliferation in the consumer world and the volume economics that followed. With SSDs, flash arrived in a form optimized for compatibility - just replace a hard drive with an SSD for radically better performance. But the properties of the NAND flash memory used by SSDs differ significantly from those of the magnetic media in the hard drives they often displace. While SSDs have become more pervasive in a variety of uses, the industry has only just started to design storage systems that embrace the nuances of flash memory. As it escapes the confines of compatibility, significant improvements in performance, reliability, and cost are possible."
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RE[2]: Comment by TempleOS
by Neolander on Mon 15th Apr 2013 06:05 UTC in reply to "RE: Comment by TempleOS"
Neolander
Member since:
2010-03-08

Also, even if Flash memory is faster than hard drives, it's nowhere near DDR RAM speeds. Swapping on an SSD or SD card remains pretty much as painful as swapping on an HDD, and I can't believe it's all the SSD interface's fault.

There is some cool research going on regarding NVRAM, such as STT MRAM* or memristors, but I don't think Flash memory will be able to go there.


* STT = Spin Transfer Torque. In short, the main issue regarding MRAM today is that we don't know how to flip the magnetization of a small magnet without affecting that of neighboring magnets, which limits storage density. STT research is about using spin-polarized ("magnetized") electrical currents flowing directly into the magnet in order to do that.

Edited 2013-04-15 06:13 UTC

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