From owner-freebsd-questions@FreeBSD.ORG Tue Jul 10 10:17:55 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 173A71065686 for ; Tue, 10 Jul 2012 10:17:55 +0000 (UTC) (envelope-from b.smeelen@ose.nl) Received: from mail.ose.nl (mail.ose.nl [212.178.134.164]) by mx1.freebsd.org (Postfix) with ESMTP id 9EF448FC14 for ; Tue, 10 Jul 2012 10:17:54 +0000 (UTC) X-Footer: b3NlLm5s Received: from localhost ([127.0.0.1]) by mail.ose.nl (using TLSv1/SSLv3 with cipher AES256-SHA (256 bits)) for freebsd-questions@freebsd.org; Tue, 10 Jul 2012 12:17:53 +0200 Message-ID: <4FFC013A.3040903@ose.nl> Date: Tue, 10 Jul 2012 12:17:30 +0200 From: Bas Smeelen User-Agent: Mozilla/5.0 (X11; Linux i686; rv:13.0) Gecko/20120615 Thunderbird/13.0.1 MIME-Version: 1.0 To: freebsd-questions@freebsd.org References: <4FFBEE6E.6000906@ulb.ac.be> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: FreeBSD 9.0 & LSI MegaRAID SATA problem X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Jul 2012 10:17:55 -0000 On 07/10/2012 12:11 PM, Wojciech Puchar wrote: >>> It is always better to use gmirror instead of "hardware" RAID. One have >>> full control over what is going on >> >> mmh not always. Nothing replaces a good hardware RAID card with a BBU > > for real reason i used parantheses for word "hardware". That's clear to me. These "hardware" raid controllers are not very reliable because they are indeed not real hardware raid controllers, but software based. Maybe for desktop usage it's ok/ good enough? It is better to use the operating systems raid capability linke gmirror instead. Of course real hardware raid controllers with cache and battery backed are a different thing and very reliable. Disclaimer: http://www.ose.nl/email