cvs commit: src/sbin/atacontrol atacontrol.c

[M. Warner Losh]

In message: <11419.1197903331 at critter.freebsd.dk>
            "Poul-Henning Kamp" <phk at phk.freebsd.dk> writes:
: > * NAND Flash devices should not have their sectors erased unless 
: >absolutely necessary, to implement wear levelling.
: 
: Wrong, almost exactly the opposite in fact:
: 
: Flash devices using wear-levelling should have data erased as soon as
: possible to give the wear-levelling the maximum amount of information
: and available space to work with.

The formula for flash life has two components: The percentage of space
available and the data rate.  So the more space, the longer it will
last for a given rate.

Warner