From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 159AB1381F3 for ; Tue, 17 Sep 2013 06:43:32 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 0DD03E09E8; Tue, 17 Sep 2013 06:43:26 +0000 (UTC) Received: from mail-qe0-f41.google.com (mail-qe0-f41.google.com [209.85.128.41]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 17B80E0898 for ; Tue, 17 Sep 2013 06:43:24 +0000 (UTC) Received: by mail-qe0-f41.google.com with SMTP id ff1so3475410qeb.14 for ; Mon, 16 Sep 2013 23:43:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=EgZJXXNLrpRYP68XyQM91kcg5Zd0/xsh3mbJ3nR+vvM=; b=bJLYjBKYRLKolbLngmxQ4i5L4Y8Eury6zuDo3ks6tw6C3T/WG6b5cYMlOKjLXSvP0E xMOUFrXc790guy7wd7SN+T2o8Ie59XwazsDXf49i2uj+1F7h/To1T7jnjqd08oo4qaxL 3UaZLWgWIStrxqh1ZT0E4Ljq7G1pxaqiQB6UwLDp0hN2o/ClqD2ke4x+eXljrJYx5wo3 UpaAbULYhIwp6oy37vzS3byuGvntb0bJBTkDY+R1HrSgLKWrymNZM1uH60hOgoqVnI6r PTFaA6bn00t9rqvbxpsEbyhzbqY3n4wR+JuQ3Mv4qieyXLBA8Y+cj97MvRiETQg8IOmK ukVA== Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 X-Received: by 10.224.29.133 with SMTP id q5mr4045282qac.78.1379400204267; Mon, 16 Sep 2013 23:43:24 -0700 (PDT) Received: by 10.140.25.83 with HTTP; Mon, 16 Sep 2013 23:43:24 -0700 (PDT) In-Reply-To: <52370356.3030204@orlitzky.com> References: <5233792D.7040900@orlitzky.com> <3910524.4C314ckqDu@wstn> <52339798.5000409@gmail.com> <523474C4.7080007@orlitzky.com> <52370356.3030204@orlitzky.com> Date: Mon, 16 Sep 2013 23:43:24 -0700 Message-ID: Subject: Re: [gentoo-user] {OT} Need a new server From: Grant To: Gentoo mailing list Content-Type: text/plain; charset=ISO-8859-1 X-Archives-Salt: 9278d4c5-5248-4648-9c7d-719f089fb598 X-Archives-Hash: cab4ed73b925b03e69c3ac15e8447ada >>> If it's Type 2, then four drives with a spare is equally tolerant. >>> Slightly better, even, if you take into account the reduced probability >>> of 2/5 of the drives failing compared to 2/6. >> >> Thank you very much for this info. I had no idea. Is there another >> label for these RAID types besides "Type 1" and "Type 2"? I can't >> find reference to those designations via Google. > > Nothing standard. RAID 10 pretty intuitively comes from RAID 1+0, which > can be read aloud to figure out what it means: "RAID 1, plus RAID 0," > i.e. you do RAID 1, then stripe (RAID 0) the result. > > The trick is that RAID 1 can refer to either mirroring (2-way) or > multi-mirroring (3-way) [1]. In the end, the designation is the same: > RAID 1. So if you stripe either of them, you wind up with RAID 10. In > other words, "RAID 10" doesn't tell you which one you're going to get. > > If I ever find a controller that will do multi-mirroring + RAID 0, I'll > let you know what they call it =) Is multi-mirroring (3-disk RAID1) support without RAID0 common in hardware RAID cards? - Grant