Re: duty cycles on compact flash?

[David Young <dyoung%pobox.com@localhost>]

On Tue, Oct 11, 2005 at 09:58:15PM -0400, Steven M. Bellovin 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.

Dave

-- 
David Young             OJC Technologies
dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933