From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Brown Subject: Re: RAID1 On 3 Drives Date: Sun, 14 Mar 2010 08:45:22 +1100 Message-ID: <20100314084522.477c9894@notabene.brown> References: <70ed7c3e1003131321t48686cb5l33a10b8708b27dd7@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <70ed7c3e1003131321t48686cb5l33a10b8708b27dd7@mail.gmail.com> Sender: linux-raid-owner@vger.kernel.org To: "Majed B." Cc: LinuxRaid List-Id: linux-raid.ids On Sun, 14 Mar 2010 00:21:06 +0300 "Majed B." wrote: > RAID is called mirror: You need 2 drives: The original and the mirror= =2E >=20 > You can make a RAID1 array of 2 disks + 1 spare if you wish. On what do you base this (false) assertion? If there is something in the md documentation that suggests this I would like to get it fixed. NeilBrown >=20 > On Sun, Mar 14, 2010 at 12:06 AM, Carlos Mennens wrote: > > I was told by my distributions Wiki page that Grub doesn't support > > RAID 5 or RAID 6 so I would need to create a volume with three disk= s > > and set the level to RAID 1: > > > > # mdadm --create /dev/md1 --level=3D1 --raid-devices=3D3 /dev/sda1 > > /dev/sdb1 /dev/sdc1 --spare-devices=3D1 /dev/sdd1 > > > > Is this possible to mirror three identical drive partitions? I was > > talking to some co-workers and was told that I could only pair two > > drives on RAID 1. > > > > Can anyone please help me understand this? > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-rai= d" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at =C2=A0http://vger.kernel.org/majordomo-info.= html > > >=20 >=20 >=20 -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html