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https://www.micron.com/-/media/client/global/documents/products/other-documents/micron_9300_and_red_hat_ceph_reference_architecture.pdf
New NVMes are Micron 9300 of maximum possible capacity — 12.8 TB. Each of these delivers even more write iops: 310k instead of 260k. Everything else remains the same. The new write performance result for 100 RBD clients is 477029 iops. Remember that it’s only 4770 iops per a client, though. 10 RBD clients get 294000 iops in their case, that’s 29400 iops per a client, which is of course better.
What helped the performance? I guess the configuration did. In comparison to the previous test they changed the following: