Subject: Re: duty cycles on compact flash?
To: None <>
From: Jukka Marin <>
List: tech-embed
Date: 10/12/2005 09:18:50
On Wed, Oct 12, 2005 at 01:08:41AM -0500, David Young wrote:
> > How many times can a typical CF card be written?
> > 
> > I'm going to build a gateway from a Soekris 4801.  I may want to use it 
> > as a DHCP server, in which case I'd like to use non-volatile storage 
> > for the lease database.  How long could I expect it to last?
> I have always heard 100k writes per block for a consumer CF card,
> and 1M for an "industrial strength" card.  CF cards do wear-levelling;
> theoretically, you can write to an N-block card on the order of
> N x 100k times.

Not all of them do wear-levelling, I hear - but I have no idea which ones
do and which ones don't.  :-(