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So these NAND drives...

M

MartinX

One Hour Martinizing While You Wait
Joined
Jan 23, 2003
Messages
7,184
What's the big deal exactly?

Yes, I've been looking forward to this tech for a while, yes, I get that it's faster, more robust and more efficient.

That's all marvellous, and why I will probably get one of those drives next time I'm upgrading my Gaming rig.

But why is this such a big deal only now, and why has it taken so long to get to market?
 
Because it's "marvelous" and only recently have they been able to get the proper memory densities....
 
Only now have capacities reached acceptable levels for serious mass storage use. Over the past 5 years or so, NAND densities have doubled--that's right, doubled--each year, and this year we are seeing 16 Gb (4 GB) densities per chip which can be put on a board cost effectively.

That said, there are a few issues. First, supplies are having trouble meeting demand, as there is direct competition with the cell phone, portable media player, and flash drive segments. There is also competition from within the production line, as NAND must compete with DDR2 for production lines (because both are very hot products in the memory industry). Second, adjustments in the ATA command set and the OS kernel need to be made, because NAND flash has much faster access times but has a different R/W access routine compared to hard drives, among other differences. Also, embedded filesystems must address the rewrite endurance limitations of NAND in its present state, so that data is not being written in bad sectors and the number of writes to the Flash is minimized.
 
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