Gentoo Archives: gentoo-user

From: Neil Bothwick <neil@××××××××××.uk>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] RAID6 for / ?
Date: Thu, 09 Dec 2010 15:46:13
Message-Id: 20101209154424.2cadb5d1@digimed.co.uk
In Reply to: Re: [gentoo-user] RAID6 for / ? by "Stefan G. Weichinger"
1 On Thu, 09 Dec 2010 15:53:24 +0100, Stefan G. Weichinger wrote:
2
3 > I never did RAID1 with more than 2 disks, you suggest something like:
4 >
5 > mdadm --create /dev/md0 --level=1 --raid-disks=6 /dev/sd[abcdef]1
6 >
7
8 Yes
9 >
10 > This would result in /dev/md0 having a usable size of 3 disks?
11
12 No, the size is that of one disk. The reason for using all disks is that
13 otherwise the space would go unused and this way you can boot from any of
14 the disks in the event of failures.
15
16 I've never tried it with 6, but my desktop is set up like this with a
17 three disk RAID1 for / and LVM on RAID5 for everything else.
18
19
20 --
21 Neil Bothwick
22
23 Beware of cover disks bearing upgrades.

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Re: [gentoo-user] RAID6 for / ? "Stefan G. Weichinger" <lists@×××××.at>