From: Neil Brown <neilb@suse.de>
To: "Majed B." <majedb@gmail.com>
Cc: LinuxRaid <linux-raid@vger.kernel.org>
Subject: Re: RAID1 On 3 Drives
Date: Sun, 14 Mar 2010 08:45:22 +1100 [thread overview]
Message-ID: <20100314084522.477c9894@notabene.brown> (raw)
In-Reply-To: <70ed7c3e1003131321t48686cb5l33a10b8708b27dd7@mail.gmail.com>
On Sun, 14 Mar 2010 00:21:06 +0300
"Majed B." <majedb@gmail.com> wrote:
> RAID is called mirror: You need 2 drives: The original and the mirror.
>
> 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
>
> On Sun, Mar 14, 2010 at 12:06 AM, Carlos Mennens <carloswill@gmail.com> 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 disks
> > and set the level to RAID 1:
> >
> > # mdadm --create /dev/md1 --level=1 --raid-devices=3 /dev/sda1
> > /dev/sdb1 /dev/sdc1 --spare-devices=1 /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-raid" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
> >
>
>
>
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next prev parent reply other threads:[~2010-03-13 21:45 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-13 21:06 RAID1 On 3 Drives Carlos Mennens
2010-03-13 21:21 ` Majed B.
2010-03-13 21:24 ` Carlos Mennens
2010-03-14 21:09 ` Luca Berra
2010-03-13 21:45 ` Neil Brown [this message]
2010-03-13 21:26 ` Neil Brown
2010-03-13 21:31 ` Majed B.
2010-03-13 21:50 ` Neil Brown
2010-03-14 3:30 ` Majed B.
2010-03-14 1:22 ` thib
-- strict thread matches above, loose matches on Subject: below --
2010-03-13 22:30 Joachim Otahal
2010-03-13 23:18 ` Carlos Mennens
2010-03-13 23:50 ` Bill Davidsen
2010-03-15 12:30 ` Carlos Mennens
2010-03-15 12:48 ` Majed B.
2010-03-15 14:47 ` Carlos Mennens
2010-03-15 16:05 ` Majed B.
2010-03-16 1:46 ` Keld Simonsen
2010-03-20 16:08 ` Bill Davidsen
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