Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932165AbWC1N3H (ORCPT ); Tue, 28 Mar 2006 08:29:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932166AbWC1N3H (ORCPT ); Tue, 28 Mar 2006 08:29:07 -0500 Received: from javad.com ([216.122.176.236]:53772 "EHLO javad.com") by vger.kernel.org with ESMTP id S932165AbWC1N3F (ORCPT ); Tue, 28 Mar 2006 08:29:05 -0500 From: Sergei Organov To: "linux-os \(Dick Johnson\)" Cc: "Artem B. Bityutskiy" , , , Subject: Re: Lifetime of flash memory References: <20060326162100.9204.qmail@science.horizon.com> <4426C320.9010002@yandex.ru> <20060327161845.GA16775@csclub.uwaterloo.ca> <87acbb6vlj.fsf@javad.com> Date: Tue, 28 Mar 2006 17:27:33 +0400 In-Reply-To: (linux-os@analogic.com's message of "Tue, 28 Mar 2006 07:55:32 -0500") Message-ID: <87vety66nu.fsf@javad.com> User-Agent: Gnus/5.110004 (No Gnus v0.4) XEmacs/21.4.18 (linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1264 Lines: 32 "linux-os \(Dick Johnson\)" writes: > On Mon, 27 Mar 2006, Sergei Organov wrote: > >> "linux-os \(Dick Johnson\)" writes: >> [...] >>> CompactFlash(tm) like SanDisk(tm) has very good R/W characteristics. >> >> Try to write 512-byte sectors in random order, and I'm sure write >> characteristics won't be that good. >> >>> It consists of a connector that exactly emulates an IDE drive connector >>> in miniature, an interface controller that emulates and responds to >>> most IDE commands, plus a method of performing reads and writes using >>> static RAM buffers and permanent storage in NVRAM. >> >> Are you sure they do have NVRAM? What kind of NVRAM? Do they have backup >> battery inside to keep NVRAM alive? >> > > NVRAM means [N]on-[V]olatile-[RAM]. Any of many types, currently NAND flash. > No battery required. But NAND FLASH, while it is NV(Non-Volatile) *is not* RAM (Random Access Memory), sorry. So it seems there is no NVRAM inside CFs, right? -- Sergei. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/