23 Sep
2020
23 Sep
'20
8:21 p.m.
On Wed, Sep 23, 2020 at 8:12 PM Anthony D'Atri <anthony.datri@gmail.com> wrote:
With today’s networking, _maybe_ a super-dense NVMe box needs 100Gb/s where a less-dense probably is fine with 25Gb/s. And of course PCI lanes.
https://cephalocon2019.sched.com/event/M7uJ/affordable-nvme-performance-on-c...
I was able to reach 35 Gb/s network traffic on each server (5 servers, with 6 NVMEs per server, one OSD per NVME) during a read benchmark from cephfs, and I wouldn't treat that as a super-dense box. So 25Gb/s may be a bit too tight. -- Alexander E. Patrakov CV: http://pc.cd/PLz7