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From: Christoph Anton Mitterer To: linux-btrfs Date: Tue, 21 Oct 2025 17:53:24 +0200 In-Reply-To: References: <20250922070956.GA2624931@tik.uni-stuttgart.de> <3a3df034-4461-4c35-b170-a5084586d2b3@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2-5 Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-AuthUser: calestyo@scientia.org 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.