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Canon EOS Full Frame for HD
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Old June 2nd, 2009, 02:02 PM   #16
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Originally Posted by Bill Binder View Post
That's how I do it. Not sure it matters too much for photos, but for video, I'd think having a fragmented card could introduce issues at some point (more buffering, dropped frames), even though I've never heard of that.
If you delete all of the files (except the firmware that was added first), there would be no fragmenting risk.

I'm not a formatting purist, but I also like to format the cards regularly, rather than delete files over and over, just in case.
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Old June 2nd, 2009, 10:25 PM   #17
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I thought CF technology purposely fragments files in order to make sure all segments of CF memory are written to, rather than just certain areas, to insure longer life of the memory. Maybe that's old technology?

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Old June 2nd, 2009, 10:41 PM   #18
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Originally Posted by Julian Frost View Post
I thought CF technology purposely fragments files in order to make sure all segments of CF memory are written to, rather than just certain areas, to insure longer life of the memory. Maybe that's old technology?

Julian
Yep. Nand Flash technology (the core technology in CF and SD cards) gives you no advantage with respect to sector ordering (unlike a HD where it does matter). This is due to wear leveling which is what you described is called. The sector numbers have no correlation to the physical layout of the memory and therefore no impact on access times.

Access time is the primary effect of fragmentation. In the case of CF it doesn't matter.
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Old June 20th, 2009, 11:59 AM   #19
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Yep. Nand Flash technology (the core technology in CF and SD cards) gives you no advantage with respect to sector ordering (unlike a HD where it does matter). This is due to wear leveling which is what you described is called. The sector numbers have no correlation to the physical layout of the memory and therefore no impact on access times.

Access time is the primary effect of fragmentation. In the case of CF it doesn't matter.
Gee, you mean seek time on a flash card isn't of any consequence? Who knew? ;-)
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