Re: kernel work week of 3-Feb-2010 HEADS UP
Matthew Dillon wrote:
> :All flash media (SSDs, CF cards, USB sticks) use wear-leveling
> :techniques that aim to distribute the number of write cycles
> :evenly over all cells. Here are two nice papers from Corsair
> :and Micron:
> :
> :http://www.corsair.com/_faq/FAQ_flash_drive_wear_leveling.pdf
> :
> :http://download.micron.com/pdf/technotes/nand/tn2942_nand_wear_leveling.pdf
> :
> :When you google for "flash wear leveling", you get a bunch of
> :other interesting hits, including papers from Samsung, Kingston,
> :Spansion and others. Most wear-leveling implementatios are
> :optimized for mostly linear writes, which is the reason that
> :special flash file systems exist (e.g. in Linux and Solaris).
>
> Very very interesting.
>
> So now the question is whether OCZ and Intel implement
> static wear leveling or not. My presumption is they
> must, but I can't find a definitive document on the
> issue.
OCZ has customer support forums, some of them dedicated to
their SSD productes. It's probably worth a try to ask there:
http://www.ocztechnologyforum.com/forum/forum.php
intel has something similar (but my impression is that it's
less helpful). Here's the link:
http://communities.intel.com/community/tech/solidstate
Just found two intersting threads there, discussing the
durability of intel SSDs:
http://communities.intel.com/thread/8118
http://communities.intel.com/thread/8559
Best regards
Oliver
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