This shows you the differences between two versions of the page.
Next revision | Previous revision | ||
read_disturbance [2012/11/15 17:24] – created ba | read_disturbance [2017/11/07 22:26] (current) – external edit 127.0.0.1 | ||
---|---|---|---|
Line 1: | Line 1: | ||
====== File system endurance ====== | ====== File system endurance ====== | ||
- | NAND flash devices as assembled in SD Cards and on some Zbrain devices have the properties not to hold the information for eternity. | + | NAND flash devices as assembled in SD Cards and on some Zbrain devices have the properties not to hold the information for eternity.\\ |
The charges, that represent the informations will degrade under certain conditions. | The charges, that represent the informations will degrade under certain conditions. | ||
- | There are big differences between different cards. | + | There are big differences between different cards.\\ |
- | If the memory is never read it will take some years until the information gets unreadable. | + | |
+ | If the memory is never read it will take some years until the information gets unreadable.\\ | ||
With each reading the neighboring cells of the read cell discharges a little bit. This process is called //read disturbance// | With each reading the neighboring cells of the read cell discharges a little bit. This process is called //read disturbance// | ||