Re: [NTLK] Warning: 20 MB Cards Recently on eBay

From: Laurent Daudelin (nemesys_at_cox.rr.com)
Date: Thu Jan 17 2002 - 23:21:20 EST


on 17/01/02 23:14, Andrew Beals at bandy_at_cinnamon.com wrote:

> On Thu, 17 Jan 2002 21:04:29 -0700, "Grant [Oy Vey] Hutchinson"
> <grant_at_splorp.com> wrote:
>> So, is there any reliable way to test these cards in order to check how
>> far along in their "life cycle" they are?
>
> I don't know the answer to your life-cycle question, but typically the only
> data on a flash card in a routah is the IOS image. Its configuration gets
> written into on-board NVRAM. It's possible that they may have had core dumps
> written on them from time to time, but [a] it's really slow and [b] they tend
> to be bigger than the cards. CSCO's customers don't upgrade router images all
> that often -- if it works, why mess with it? Additionally, it's quicker for a
> router in a datacenter to boot off of a server box, and use the image in flash
> for backup purposes.

How is it that I often read here from various users that cards that have
been used in Cisco routers are worn out because the routers will constantly
write on them?

-Laurent.

-- 
=====================================================================
Laurent Daudelin            <http://home.cox.rr.com/nemesys>
Logiciels Nemesys Software         mailto:nemesys_at_cox.rr.com

choke v.: 1. [common] To reject input, often ungracefully. "NULs make System V's lpr(1) choke." "I tried building an EMACS binary to use X, but cpp(1) choked on all those #defines." See barf, gag, vi. 2. [MIT] More generally, to fail at any endeavor, but with some flair or bravado; the popular definition is "to snatch defeat from the jaws of victory."

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