Why do I feel like compact flash is more reliable than SSD ?

[Mehmet Erol Sanliturk]

On Fri, Dec 30, 2011 at 2:13 AM, UFS User <ufs.user at yahoo.com> wrote:

> I have run a lot of different FreeBSD systems off (fileservers, firewalls,
> routers, etc.) off of compact flash cards[1] and have never had a CF part
> fail.
>
> Most of these were read-only mode, but some of them were left mounted 'rw'
> for years (with no swapping, of course).  The bottom line is, they never
> failed, and some were (and are) in the field for over 8 years now.
>
> But everyone I know (including me) has had an SSD fail, usually with no
> explanation.
>
> So is this just chance, or ... are CF cards really a lot more reliable
> than SSD ?
>
> It's sloppy, but I never once considered mirroring my CF boot devices, and
> now in 2011 I am actually buying two *different* SSDs to put into a boot
> mirror
> because I am afraid of mirroring identical ones and they both die at
> identical times.
>
> Comments ?
>
>
>
> [1] Plain old store-bough Sandisk parts - so a good brand, but nothing
> special
>
>
The following pages , and references in them , may be useful :


http://en.wikipedia.org/wiki/Solid-state_drive
http://en.wikipedia.org/wiki/Wear_leveling
http://en.wikipedia.org/wiki/Write_amplification


http://en.wikipedia.org/wiki/Category:Solid-state_computer_storage_media
http://en.wikipedia.org/wiki/Category:Solid-state_computer_storage


Thank you very much .

Mehmet Erol Sanliturk