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The expertise behind SD playing cards is predicated on flash reminiscence, which retains data securely even with out a energy provide. Nevertheless, even this expertise has its limits.
The electrical costs saved within the reminiscence cells, which symbolize our information, can turn into unstable over time. This means they will lose their cost, which in flip results in information loss within the worst case. But how lengthy does it take for this to occur?
According to the requirements for flash reminiscence, to which the producers of SD playing cards additionally refer, a reminiscence cell ought to be capable to protect information for a minimum of ten years at a temperature of 55 levels Celsius. That sounds reassuring at first, however in apply different elements play a task.
These elements embody the standard of the cardboard, the depth of use, and the environmental situations. All of those affect the precise lifespan of the SD playing cards. For instance, frequent writing and deleting of knowledge, excessive temperatures, and even humidity can speed up the getting older strategy of the reminiscence cells. Cheaper playing cards which might be fabricated from much less strong elements are sometimes notably affected.
Further studying: How long does data last on a flash drive?
The lifespan of SD reminiscence playing cards (the image exhibits a mannequin from Lexar) relies on a number of elements resembling temperature, use, and ambient humidity.
Lexar
So one factor is obvious: It is tough to provide a blanket reply to the query of how lengthy an SD card will final. It relies on many elements, from the standard of the cardboard to the kind of use and environmental situations. Some customers report playing cards that also work completely after a number of years of storage in a drawer. Others expertise that an intensively used SD card provides up the ghost after a short while.
So the conclusion stays: SD reminiscence playing cards are great instruments for cellular information storage and transport. However, they don’t seem to be the primary alternative for long-term information backup. To keep away from information loss, it is best to all the time again up vital data on a number of media. Because though an SD card can theoretically last as long as 10 years, the fact could also be fairly totally different resulting from numerous elements.
SD reminiscence playing cards (right here an instance from Transcend) are a well-liked information service, particularly in cameras and smartphones. However, these storage media are usually not meant to final endlessly — however they can be utilized to retailer information on the go for brief intervals of time.
Transcend
This article was translated from German to English and initially appeared on pcwelt.de.
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