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From: Phillip Susi <phill@thesusis.net>
To: antlists <antlists@youngman.org.uk>
Cc: Brian Allen Vanderburg II <brianvanderburg2@aim.com>,
	linux-raid@vger.kernel.org
Subject: Re: Linux raid-like idea
Date: Mon, 14 Sep 2020 13:19:24 -0400	[thread overview]
Message-ID: <87k0ww6ztv.fsf@vps.thesusis.net> (raw)
In-Reply-To: <9220ea81-3a81-bb98-22e3-be1a123113a1@youngman.org.uk>


antlists writes:

> Yup. Raid 6 has two parity disks, and that's mirrored to give four 
> parity disks. So as an *absolute* *minimum*, raid-61 could lose four 
> disks with no data loss.

Don't you mean 5 disks?

At best 4 lost disks paird off in each raid1 means the raid6 sees two
failures.  One more disk failing isn't enough to take out another mirror
so the raid6 keeps ticking.

  parent reply	other threads:[~2020-09-14 17:35 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1cf0d18c-2f63-6bca-9884-9544b0e7c54e.ref@aim.com>
2020-08-24 17:23 ` Linux raid-like idea Brian Allen Vanderburg II
2020-08-28 15:31   ` antlists
2020-09-05 21:47     ` Brian Allen Vanderburg II
2020-09-05 22:42       ` Wols Lists
2020-09-11 15:14         ` Brian Allen Vanderburg II
2020-09-11 19:16           ` antlists
2020-09-11 20:14             ` Brian Allen Vanderburg II
2020-09-12  6:09               ` Song Liu
2020-09-12 14:40               ` Adam Goryachev
2020-09-12 16:19               ` antlists
2020-09-12 17:28                 ` John Stoffel
2020-09-12 18:41                   ` antlists
2020-09-13 12:50                     ` John Stoffel
2020-09-13 16:01                       ` Wols Lists
2020-09-13 23:49                         ` Brian Allen Vanderburg II
2020-09-15  2:12                           ` John Stoffel
     [not found]                             ` <43ce60a7-64d1-51bc-f29c-7a6388ad91d5@grumpydevil.homelinux.org>
2020-09-15 18:12                               ` John Stoffel
2020-09-15 19:52                                 ` Rudy Zijlstra
2020-09-15  2:09                         ` John Stoffel
2020-09-15 11:14                           ` Roger Heflin
2020-09-15 18:07                             ` John Stoffel
2020-09-15 19:34                               ` Ram Ramesh
2020-09-14 17:19                 ` Phillip Susi [this message]
2020-09-14 17:26                   ` Wols Lists
2020-09-15 11:32       ` Nix
2020-09-15 18:10         ` John Stoffel

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