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Thread started 04 May 2013 (Saturday) 09:42
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SD card life span

 
Miqs
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Is there a life span to an SD card if used moderately and are there signs when a card is beginning to fail? I currently have three and try to rotate them but wondered if there are any signs of impending doom? :(
Also is it possible to check on the number of exposures a card has had?

May 04, 2013 09:42



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RTPVid
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Miqs wrote in post #15896724external link
Is there a life span to an SD card if used moderately and are there signs when a card is beginning to fail? I currently have three and try to rotate them but wondered if there are any signs of impending doom? :(
Also is it possible to check on the number of exposures a card has had?

SD cards do have a wear-out limit, but it is very high, on the order of 100,000+ erase/write cycles, and SD cards include wear-leveling technology to even out the usage across the card.

So, if used moderately (as you say) you will never reach the wear-out limit.

May 04, 2013 12:21

Tom

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kenwood33
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100k is about the life of a shutter
where did you get that information from? i would think it should be much higher

May 04, 2013 12:41

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lennartsw
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I think you don't see a SD card die because you have have written too much data on it.
I don't have any SD cards but one of my photography teachers has got an old memory card that looks like a CF card but it is something else with a little computer (you can also hear it) in it. He says he and many pupils have taken about 3 million photos with it and it still works. I think a storage will live longer than a computer.

May 04, 2013 13:26

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isoMorphic
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lennartsw wrote in post #15897191external link
I don't have any SD cards but one of my photography teachers has got an old memory card that looks like a CF card but it is something else with a little computer (you can also hear it) in it.

It's called Micro drive and it's the same thing used in older generation iPods and such. Many moved away from them because if you drop them chances are it's game over. Unlike with flash which is extremely durable and is able to take a serious beating.

May 04, 2013 14:35



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kenwood33 wrote in post #15897096external link
100k is about the life of a shutter

It's also the expected life (in miles) of some automotive belts. I didn't get it confused with that, either. :rolleyes:

kenwood33 wrote in post #15897096external link
where did you get that information from? i would think it should be much higher

The information is available lots of places (even wikipedia). Here's one source: http://www.snia.org ...ability_White_Paper​_0.pdfexternal link (check page 5), but fair warning... that paper is not for the squeamish regarding flash memory error rates.

May 04, 2013 16:27

Tom

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isoMorphic
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Well people have done all kinds of testing on SSD and found 3-5 years (depends on the flash type) under constant use.

So SD could be anywhere from 3 years to a lifetime depending how much you shoot. I have cards that are over 20 years old and good as new. But of course they were not used that much so they have lots of miles left.

May 04, 2013 20:35



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hollis_f
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An SD card should last between 15 and 50 years before it reaches its write/erase cycle limit. If you're still using your puny little 32GB card (if you still have a camera that will accept SDXC cards) in 20 years time I'll be most surprised.

May 05, 2013 07:34

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jbrackjr
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Considering the first SD card was a 32MB card produced in 1999-2000 the oldest SD is about 13-14 years old. Doubtful that you will find many of them still in use. :lol:

May 05, 2013 09:46

Jim
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SD card life span
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