From owner-freebsd-fs@FreeBSD.ORG Tue Jul 8 22:31:20 2008 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 09B371065679 for ; Tue, 8 Jul 2008 22:31:20 +0000 (UTC) (envelope-from mike503@gmail.com) Received: from wf-out-1314.google.com (wf-out-1314.google.com [209.85.200.169]) by mx1.freebsd.org (Postfix) with ESMTP id CEDC08FC1E for ; Tue, 8 Jul 2008 22:31:19 +0000 (UTC) (envelope-from mike503@gmail.com) Received: by wf-out-1314.google.com with SMTP id 24so2503690wfg.7 for ; Tue, 08 Jul 2008 15:31:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=du78Z5CcBlaClZ+4/xfkkEEtqDG5YU7ELdBmq2+5348=; b=OWp4juyZFulrqcWtzVkIqpLoyrSgRUZFhalFq0bsRUsM5hDgOwTwf4DHNeWOsgIjDZ cG54KNW2ZKXvZUdUWo7X2dqEzfH3avFWEAmXU78EwAQXHU2mMjYD4H7aEKO+syP2FE5A S+G2OAvKNTlSR343M6d9vZbz4lX0Xrm336s4E= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=IQS/aRi+uxgCDB9DYMfuKnfFl7+B7WyPppmZoo8RPi/mWUnOMAt7QFOLi7rByqpDjO dkg4RLaa8oVojJxXA673DKzpeJ5nu+HAzK4pQ32bUEiSvrllX1+X/Di12Keu+qgnlVaM YNgbnprHHD6MeP0KKgZu39RSgix0FO3N2h1MM= Received: by 10.142.211.1 with SMTP id j1mr2007229wfg.203.1215556279564; Tue, 08 Jul 2008 15:31:19 -0700 (PDT) Received: by 10.142.102.11 with HTTP; Tue, 8 Jul 2008 15:31:19 -0700 (PDT) Message-ID: Date: Tue, 8 Jul 2008 15:31:19 -0700 From: mike To: freebsd-fs@freebsd.org In-Reply-To: <4873E0AE.6090305@psg.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080708100701.57031cda@twoflower.in.publishing.hu> <4873C4FA.2020004@FreeBSD.org> <4873E068.8060305@psg.com> <4873E0AE.6090305@psg.com> Subject: Re: Thinking of using ZFS/FBSD for a backup system X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Jul 2008 22:31:20 -0000 On 7/8/08, Randy Bush wrote: > . first cuppa. it's 4g okay, so it sounds like from multiple people this could be doable and stable enough: dual or quad-core current gen processor (amd64) 4g ram 4 or 6x 1tb disks freebsd 7.0-release these tweaks to /boot/loader.conf: vm.kmem_size=600M vm.kmem_size_max=600M vfs.zfs.prefetch_disable=1 right? I am fine with sacrificing a little bit of speed for stability. This will only run a few rsyncs per day, and then a single snapshot per day per filesystem (with maybe 15 filesystems maximum right now)