Re: SSD vs HDD

[Lukas Beeler <lukas.beeler@xxxxxxxxxxxxxxxx>]

On Fri, Oct 16, 2009 at 18:46,  <daparnin@xxxxxxxxxxxxxx> wrote:
> ÂSince the i tends to like to page things in and out of
> memory to disk wouldn't that "use up" you number of writes a lot more
> quickly. ÂThat would seem to tend to diminish the cost-justification of
> the speed. ÂA raid environment could probably handle the more frequent
> drive "failures".

Enterprise drives usually ship with double the flash it actually needs
to provide the capacity, plus the are SLC which can sustain around
100'000 erase/write cycles. Also, the controller dynamically remaps
sectors to provide even write distribution.

While this is still a new technology, it's nowhere near as bad as
you're trying to make it sound.

On desktops, you usually have rather few write workloads. Usually, you
will reach around 5-10GB of writes per day - which is why MLC SSD are
perfectly okay for desktops.