I think we are having SD card failures in the field.  We are waiting for 
them to come back for inspection.

In the meantime, I'm doing some investigation...

I read the "SD Card Corruption on Read Only File System" post and while it 
had a lot of good information, it did not answer a basic question...

Is wear leveling utilized with MySQL on SD (and FLASH memory).  I suspect 
that it is not, in that wear leveling continues to write new and updated 
FILES sequentially on the disk.  As I understand it, MySQL does not write a 
whole new file.  If so, wear leveling will not be used for MySQL files. 
 Can you confirm or deny this.

Also, what is the write cycle lifetime of the on-chip memory for the Beagle 
Bone Black? It would be interesting to compare it to the SD card.

Thanks,

Jeremy

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