From owner-freebsd-questions@FreeBSD.ORG Wed Oct 19 15:59:24 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 460051065670 for ; Wed, 19 Oct 2011 15:59:24 +0000 (UTC) (envelope-from lenzi.sergio@gmail.com) Received: from mail-qw0-f54.google.com (mail-qw0-f54.google.com [209.85.216.54]) by mx1.freebsd.org (Postfix) with ESMTP id EBE408FC14 for ; Wed, 19 Oct 2011 15:59:23 +0000 (UTC) Received: by qadz30 with SMTP id z30so1976895qad.13 for ; Wed, 19 Oct 2011 08:59:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=subject:from:to:cc:in-reply-to:references :disposition-notification-to:content-type:date:message-id :mime-version:x-mailer; bh=zfsbf6JgmQOaTxIF0mATg49/iw+RWsX2KL6u1+Ifr7U=; b=qM+d4MAoOAaEuccZVLycYii0XmSeeJOazFpoSV/4DZHT+D+jImtpQsIfFNDfjSZrX3 P46iQq4/faZ0RyVUn5aJwoq5707HlXDJiJD7IMYNV+g7VdK0VmPTstVyplmfxSM+QLVE vZT5yl7liUq4oNVgVwV6tfObNtcVLdx77iMAs= Received: by 10.229.66.224 with SMTP id o32mr1618858qci.13.1319038576497; Wed, 19 Oct 2011 08:36:16 -0700 (PDT) Received: from [192.168.6.230] ([201.21.151.230]) by mx.google.com with ESMTPS id bz6sm7043035qab.22.2011.10.19.08.36.13 (version=SSLv3 cipher=OTHER); Wed, 19 Oct 2011 08:36:15 -0700 (PDT) From: Sergio de Almeida Lenzi To: Jorge Medina In-Reply-To: References: <20111019141443.GQ4592@pcjas.obspm.fr> Date: Wed, 19 Oct 2011 13:36:11 -0200 Message-ID: <1319038571.43689.13.camel@z6000.lenzicasa> Mime-Version: 1.0 X-Mailer: Evolution 2.32.1 FreeBSD GNOME Team Port Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Albert Shih , zfs-discuss@opensolaris.org, freebsd-questions@freebsd.org Subject: Re: ZFS on Dell with FreeBSD 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: Wed, 19 Oct 2011 15:59:24 -0000 I have several dells with the perc controller and I can say that the best solution is to user raid 0 (see both disks) and let zfs to mirror them.. This works ok, and you can use the zfs tools to manage the disks. Howerver this does not solve the problem that I had with the perc controller.. The problem is that all the storage you have is in the perc controller, even it is reliable, when it "breaks", all of your storage (and so the computer...) is useless. You cannot move the drives (HD) to another machine because the "normal" controller (ad, ada) will not recognize the disk. Even if you have a spare perc controller of the same kind at hand (and I bet you do not have...) the disks are "signed" by the other (the broken) controller and so will not be recognized by the new controller. In my case I had to call dell support, and only after several hours I could put the HD online again. I mount only one disk (of the zfs pool) in the new controller, and even with the dell support in the phone the new controller wipe out the disk. A new call (with a different dell support) was able to re-initialize the disk, that includes re-install Freebsd... and after that "attach" the old disk, and using zpool detatch, followed by zpool attach (the old disk), it than reconstruct the mirror... resulting in almost 6 hour downtime and a loss of one day working for the hole company. Now, a dell support (here) does not attend you if you say that the OS is FreeBSD, you must say to them that you are installing Linux... to get the support. Conclusion: now I prefer the IBM 32XX series... Ok that is my story Sergio.