Talk:Wear levelling
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[edit] Attach PDF file
hi, information about wear leveling is sparse on the internet. Companies keep their algorithms as a secret. The white paper from sandisk is no exception. Sandisk removed the paper from all official pages so it's very hard to find (Try to search for it!). So I'd like to find a nice place to upload this paper to. Any suggestions where to archive it?
- Did you check whether the file is archived by The Wayback Machine? Brolin Empey 20:45, 12 May 2006 (UTC)
It's still available. Check http://www.sandisk.com/Assets/File/OEM/WhitePapersAndBrochures/RS-MMC/WPaperWearLevelv1.0.pdf
Tex (talk) 20:38, 5 March 2008 (UTC)
[edit] Comment about FAT File system
The comment about the sandisk wear leveling not working for the FAT is incorrect, the comment assumes that the first 4Mb of the host visible sectors are in the same zone. This will definitely NOT be the case, any normal filesystem will tend to cluster writes in small areas of the 'disk' for performance reasons (on hard disk drives). This means that it the 'erase block' is one sector the best layout for a 4Mb zone on a 1Gb device is for every 256th sector to be in a given zone. The size of the 'erase block' does confuse this though.
I'm not sure if the paragraph should be rewritten or just deleted. 86.16.135.53 10:06, 27 May 2006 (UTC)
[edit] Comment about DiskonModule wear leveling
I disagree with "Some storage interfaces like DiskOnChip (which allows flash memory devices to emulate regular ATA disks) do not in themselves perform wear levelling."
From the Emphase website describing a Flash disk module 44-pin: "Wear-leveling algorithm to increase module lifetime"
http://www.emphase.com/fdm4400
- I'd like a reference for this too. Most commercially available parallel ATA flash modules use the CompactFlash form factor of ATA, and as I understand the article, most commercially available CF cards perform wear levelling. I've requested a citation, and I plan to come back in a week and remove the claim if nobody cites it. --Damian Yerrick (talk | stalk) 12:59, 17 July 2007 (UTC)
