From: Simon Leinen <simon.leinen@switch.ch>
To: ceph-devel@vger.kernel.org
Subject: "Hybrid SMR" drive spec proposal for OCP
Date: Mon, 13 Nov 2017 17:08:06 +0100 [thread overview]
Message-ID: <aa375igo0p.fsf@switch.ch> (raw)
Ted Ts'o from Google wrote a small spec for a new kind of disk drive
that could be partly "traditional" and partly SMR (Shingled Magnetic
Recording), and you could convert parts of the disk (at 100GB
granularity) between traditional and SMR (and back):
https://www.blog.google/topics/google-cloud/dynamic-hybrid-smr-ocp-proposal-improve-data-center-disk-drives/
SMR is supposed to "lower the cost per byte of an HDD by up to 10-20
percent".
The spec is being proposed to the Open Compute Project (OCP).
Maybe this is something that a future version of Ceph could leverage.
Seems easier (though not "easy") with Bluestore than with Filestore.
--
Simon.
reply other threads:[~2017-11-13 16:14 UTC|newest]
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