From: Christoph Anton Mitterer <calestyo@scientia.org>
To: linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: btrfs RAID5 or btrfs on md RAID5?
Date: Tue, 21 Oct 2025 17:53:24 +0200 [thread overview]
Message-ID: <a8a16938b9112d7aa68b6df3de30d35c116fb17a.camel@scientia.org> (raw)
In-Reply-To: <d7e67eee-ac1a-4677-8bed-25c358c66c81@harmstone.com>
On Tue, 2025-10-21 at 16:46 +0100, Mark Harmstone wrote:
> The brutal truth is probably that RAID5/6 is an idea whose time has
> passed.
> Storage is cheap enough that it doesn't warrant the added latency,
> CPU time,
> and complexity.
That doesn't seem to be generally the case. We have e.g. large storage
servers with 24x 22 TB HDDs.
RAID6 is plenty enough redundancy for these, loosing 2 HDDs.
RAID1 would loose half.
Cheers,
Chris.
next prev parent reply other threads:[~2025-10-21 15:53 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-22 7:09 btrfs RAID5 or btrfs on md RAID5? Ulli Horlacher
2025-09-22 7:41 ` Qu Wenruo
2025-09-22 8:28 ` Ulli Horlacher
2025-09-22 9:06 ` Qu Wenruo
2025-09-22 9:23 ` Ulli Horlacher
2025-09-22 9:27 ` Qu Wenruo
2025-10-20 9:00 ` Ulli Horlacher
2025-10-20 9:31 ` Andrei Borzenkov
2025-09-22 9:43 ` Ulli Horlacher
2025-09-22 10:41 ` Qu Wenruo
2025-10-21 1:02 ` DanglingPointer
2025-10-21 15:46 ` Mark Harmstone
2025-10-21 15:53 ` Christoph Anton Mitterer [this message]
2025-10-21 16:15 ` Jukka Larja
2025-10-21 16:45 ` Mark Harmstone
2025-10-21 17:32 ` Andrei Borzenkov
2025-10-21 17:43 ` Mark Harmstone
2025-10-21 19:32 ` Goffredo Baroncelli
2025-10-21 22:19 ` DanglingPointer
2025-09-22 8:07 ` Lukas Straub
2025-09-22 8:50 ` Ulli Horlacher
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