[ceph-users] Blog post: storage server power consumption

Jack ceph at jack.fr.eu.org
Mon Nov 6 14:30:55 PST 2017

Online does that on C14 (https://www.online.net/en/c14)

IIRC, 52 spining disks per RU, with only 2 disks usable at a time
There is some custom hardware, though, and it is really design for cold
storage (as an IO must wait for an idle slot, power-on the device, do
the IO, power-off the device and release the slot)
They use 1GB as a block size

I do not think this will work anyhow with Ceph

On 06/11/2017 23:12, Simon Leinen wrote:
> The last paragraph contains a challenge to developers: Can we save more
> power in "cold storage" applications by turning off idle disks?
> Crazy idea, or did anyone already try this?

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