linux-kernel - Re: Compact Flash Question

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Message-ID: <e2e108260805070946t63f35e36q6960bdff11fecd8c@mail.gmail.com>
Date:	Wed, 7 May 2008 18:46:25 +0200
From:	"Bart Van Assche" <bart.vanassche@...il.com>
To:	"Stéphane ANCELOT" <sancelot@...e.fr>
Cc:	"Helge Hafting" <helge.hafting@...el.hist.no>,
	"Tomasz Chmielewski" <mangoo@...g.org>,
	LKML <linux-kernel@...r.kernel.org>, YSadgat1@...e.com,
	linux-os@...logic.com, Alan <alan@...rguk.ukuu.org.uk>,
	"Linux IDE" <linux-ide@...r.kernel.org>,
	"Jeff Woods" <jeff@...fwoods.us>
Subject: Re: Compact Flash Question

On Wed, May 7, 2008 at 5:01 PM, Stéphane ANCELOT <sancelot@...e.fr> wrote:
>
> we use  silicon systems CF  with wear leveling inside  , we write a few
> kb data back each 1/4 h  on it.(log /tmp files  are redirected to ram)

Silicon Systems CompactFlashes are the among the most reliable
CompactFlashes I have used in embedded devices. See also
http://www.siliconsystems.com/silicondrive/whitepapers/SSWP03-Endurance-R.pdf
for a whitepaper that explains their wear leveling and error
correction algorithms. Furthermore, Silicon Systems has a technology
called SiSMART that allows to monitor by how far the CompactFlash is
worn out, such that it can be monitored whether or not it is time to
replace the CompactFlash. (Note: I am not affiliated in any way to
Silicon Systems.)

Bart.
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