SSDs have wear leveling algorithms which are responsible for trying
to even out the erase/write cycles across all flash cells in the
storage. The better a job the SSD can do the longer the SSD will
-remain useable.
+remain usable.
.Pp
The more unused storage there is from the SSDs point of view the
easier a time the SSD has running its wear leveling algorithms.
larger blocks.
Write-combining results in a net-reduction
of write-amplification effects but due to having to de-combine later and
-other fragmentory effects it isn't 100%.
+other fragmentary effects it isn't 100%.
From testing with Intel devices write-amplification can be well controlled
in the 2x-4x range with the OS doing 16K writes, verses a worst-case
8x write-amplification with 16K blocks, 32x with 4K blocks, and a truly