On 01/30/2012 09:47 PM, Mark Morgan Lloyd wrote:
My understanding is that "naked" Flash devices have limited write
capability, but that "thumb drives" have an embedded microcontroller
that levels the wear. There is still the issue that some filesystems
work better with this type of device than others.
On naked Flash in fact FAT is very bad (not only) on that behalf, while
Linux does provide several file systems that internally do the necessary
wear leveling for naked flash chips. The file system issue in fact is
one of things the system the wear leveling controller on those drives
leverages. But while it improves the wear-out issue greatly, still any
flash drive will die once all available spare memory blocks are used up.
This is why unnecessary writes should be avoided (e.g. updating the
"last read" file-date) AFAIK, all Linux file systems can be configured
that way.
-Michael
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