[colug-432] MicroSD cards: pysical wear and tear

Rob Stampfli res at colnet.cmhnet.org
Thu Feb 7 15:09:46 EST 2013


On Thu, Feb 07, 2013 at 02:31:36PM -0500, Scott Merrill wrote:
> Is there a rule of thumb for measuring this?  I understand it will
> depend on the specifics of usage, but any guidelines would be helpful.
> Does flash media generally wear out twice as fast as a regular drive?
> Three times as fast?  Considering that regular hard drive life is
> generally measured in years, am I looking at a single year for flash?
> Less?
> 
> > If you have read-only partitions, then flash will last
> > longer than you care about. If you're constantly writing to it,
> > then expect it to wear out faster than a hard drive.
> 
> How much faster, in general?

With good wear leveling, SSD devices are on par today with spinning
hard drives:

http://www.storagesearch.com/ssdmyths-endurance.html
http://www.storagesearch.com/siliconsys-art1.html

http://wiki.laptop.org/go/How_to_Damage_a_FLASH_Storage_Device

Hope this helps.
Rob


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