Effect of partitioning on wear-leveling

[Jia-Shiun Li]

On Tue, Mar 22, 2016 at 2:26 PM, Peter Jeremy <peter at rulingia.com> wrote:

> On 2016-Mar-21 21:47:39 -0600, Warner Losh <imp at bsdimp.com> wrote:
> >So let’s do the math. 512MB cards tended to have write speeds of maybe
> 6MB/s.
> >At 6MB/s, that’s about 518MB/day, or one drive write per day. Most SD
> cards,
>
> I think you dropped some zeroes there.  6MB/s == 518,400MB/day ==
> 518GB/day.
> That's 1000 drive writes/day - which is non-trivial.
>
>
btw at the days of 512MB cards they are mostly made of SLC nand flash,
some were beginning to transition to MLC. They are different from TLC these
days in terms of endurance.