From: David T-G <davidtg-robot@justpickone.org>
To: list Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: raid10 redundancy
Date: Wed, 12 May 2021 13:22:42 -0400 [thread overview]
Message-ID: <20210512172242.GX1415@justpickone.org> (raw)
In-Reply-To: <87y2co1zun.fsf@vps.thesusis.net>
Phillip, et al --
...and then Phillip Susi said...
%
% keld@keldix.com writes:
%
% > My understanding is that raid10 - all layouts - are really raid0 and
% > then raid 1 on top.
%
% Naieve implementations work that way, and this is also why they require
% a an even number of disks with 4 being the minimum. Linux raid10 is not
% naieve and can operate with any number of disks >= 2.
[snip]
I've been chewing on this for a few days and I am STILL confused. Please
help! :-)
RAID10 is striping AND mirroring (leaving out for the moment the distinction
of striping mirrors vs mirroring stripes). How can one have both with only
two disks?? You either stripe the two disks together for more storage or
mirror them for redundant storage, but I just don't see how one could do both.
Thanks in advance :-)
:-D
--
David T-G
See http://justpickone.org/davidtg/email/
See http://justpickone.org/davidtg/tofu.txt
next prev parent reply other threads:[~2021-05-12 18:55 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-06 5:09 raid10 redundancy d tbsky
2021-05-06 7:48 ` Xiao Ni
2021-05-06 9:57 ` d tbsky
2021-05-06 12:38 ` Reindl Harald
2021-05-07 1:28 ` d tbsky
2021-05-08 13:47 ` keld
2021-05-09 0:52 ` Phillip Susi
2021-05-12 17:22 ` David T-G [this message]
2021-05-12 17:26 ` Reindl Harald
2021-05-12 17:39 ` David T-G
2021-05-13 15:38 ` Andy Smith
2021-05-13 15:46 ` Phillip Susi
2021-05-13 15:59 ` Andy Smith
2021-05-14 14:28 ` Phillip Susi
2021-05-14 14:37 ` Andy Smith
2021-05-17 2:07 ` Brad Campbell
2021-05-06 13:09 ` Phillip Susi
2021-05-07 1:47 ` d tbsky
[not found] ` <86A76859-3098-4AB8-9AE7-46FF54736B88@websitemanagers.com.au>
2021-05-07 3:05 ` d tbsky
2021-05-07 3:26 ` Reindl Harald
2021-05-07 14:53 ` Andy Smith
2021-05-08 1:54 ` d tbsky
2021-05-08 5:55 ` Andy Smith
2021-05-09 1:10 ` Phillip Susi
2021-05-07 1:26 ` d tbsky
2021-05-06 10:39 ` Peter Grandi
2021-05-07 1:37 ` d tbsky
[not found] ` <AD8C004B-FE83-4ABD-B58A-1F7F8683CD1F@websitemanagers.com.au>
2021-05-07 1:12 ` d tbsky
2021-05-07 9:46 ` Wols Lists
2021-05-11 0:04 ` Phil Turmel
2021-05-12 17:27 ` David T-G
2021-05-12 18:20 ` Phil Turmel
2021-05-12 16:31 ` Roy Sigurd Karlsbakk
2021-05-13 15:38 ` Phillip Susi
2021-05-13 18:21 ` Phil Turmel
2021-05-14 14:30 ` Phillip Susi
2021-05-14 14:48 ` Roy Sigurd Karlsbakk
2021-05-17 20:50 ` Phillip Susi
2021-05-17 22:21 ` Wols Lists
2021-05-18 0:12 ` Phil Turmel
2021-05-18 16:05 ` Phillip Susi
2021-05-18 17:38 ` Reindl Harald
2021-05-18 18:51 ` Phillip Susi
2021-05-18 19:02 ` Reindl Harald
2021-05-18 23:48 ` antlists
2021-05-19 3:42 ` Adam Goryachev
2021-05-19 13:02 ` Phillip Susi
2021-05-19 21:19 ` Reindl Harald
2021-05-20 1:32 ` Adam Goryachev
[not found] ` <CAAMCDeeOnraMDNCF6ZZqPAxUrih2gSse1wDYgOfd1LqY-Ffqxw@mail.gmail.com>
2021-05-20 15:08 ` antlists
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