From: "Majed B." <majedb@gmail.com>
To: LinuxRaid <linux-raid@vger.kernel.org>
Subject: Re: RAID1 On 3 Drives
Date: Sun, 14 Mar 2010 00:31:01 +0300 [thread overview]
Message-ID: <70ed7c3e1003131331g14e30331k8b97520c906431fd@mail.gmail.com> (raw)
In-Reply-To: <20100314082649.187dae9a@notabene.brown>
Neil,
Since when was this possible? I always thought that it had to have an
even number of disks.
On Sun, Mar 14, 2010 at 12:26 AM, Neil Brown <neilb@suse.de> wrote:
> On Sat, 13 Mar 2010 16:06:38 -0500
> 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.
>
> Your co-workers are wrong, at least for md raid. With md, a RAID1 can have
> any number of devices from 1 upwards - the limit varies in different
> situations but is at least 28.
>
> Try it and see.
>
> NeilBrown
>
>>
>> Can anyone please help me understand this?
>> --
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>
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--
Majed B.
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next prev parent reply other threads:[~2010-03-13 21:31 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
2010-03-13 21:26 ` Neil Brown
2010-03-13 21:31 ` Majed B. [this message]
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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