Just to add to this thread what I got back from Sandisk after doing some research on the issue.
Quote:
2.
CF cards can have a bit/byte bock re-written (depening on maunfactures geometry) atleast 1million times (sandisk claim!) this means you could low level format (write '0's ) 10 times a day for 300 years and still have plently of times left over. *(generaly branded cards make this claim). some OS's constantly write and re-write to the ide device (wondoze for 1) and this can reduce life expectancy.
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Your example is being VERY conservative...
Examples used by SanDisk in their whitepaper...
http://www.sandisk.com/Assets/File/O...rLevelv1.0.pdf
Quote:
This example is a data logging operation using the same 1GB card where a new 4kB file is
written every five seconds. But in this case the cluster size is 4kB and it is expected that, due to
file system fragmentation, the logical addresses will be written randomly. ... lifetime =79 years
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If using a 4GB CF card, under worst cases, which would have 4x the erase pool to draw from and therefore 4x the life expectancy, you are looking at over 300 years of tortured abuse by the most avid Amiga freak out there.
Even if its only 1/4 of the life of 79years, that is still more than 15 years.