From: Wols Lists <antlists@youngman.org.uk>
To: Phillip Susi <phill@thesusis.net>
Cc: Brian Allen Vanderburg II <brianvanderburg2@aim.com>,
linux-raid@vger.kernel.org
Subject: Re: Linux raid-like idea
Date: Mon, 14 Sep 2020 18:26:32 +0100 [thread overview]
Message-ID: <5F5FA7C8.6010001@youngman.org.uk> (raw)
In-Reply-To: <87k0ww6ztv.fsf@vps.thesusis.net>
On 14/09/20 18:19, Phillip Susi wrote:
>
> 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 paired 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.
>
Well caught !!!
Cheers,
Wol
next prev parent reply other threads:[~2020-09-14 17:27 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
2020-09-14 17:26 ` Wols Lists [this message]
2020-09-15 11:32 ` Nix
2020-09-15 18:10 ` John Stoffel
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