configuration: AFF320, FC, 4 node cluster with NVMe SSD, multiple SVMs(each SVM is a different customer)
Recently while testing for noisy neighbors, our platform guys realized that they were getting 400K IOPS from LUNs assigned from 4 volumes on 2 nodes in the cluster. Expectation from 2 nodes was a max of 250K IOPS with 100% read and 8K blocks, without any QOS applied.
Our understanding was 4 Node NetApp cluster with 12 SSDs/HA pair would yield max 440K IOPS. Is that wrong? From the tests, it seems with only 2 nodes no QOS policy, we can go beyond 400K and that would impact other volumes on the cluster.