Agreed, the issue I have seen is that the P4800X (Optane) is demonstrably more expensive than the P3700 for a roughly equivalent amount of storage space (400G v 375G). However, the P4800X is perfectly suited to a Ceph environment, with 30 DWPD, or 12.3 PBW. And on top of that, it seems to generally outperform the P3700 in terms of latency, iops, and raw throughput, especially at greater queue depths. The biggest thing I took away was performance consistency. Anandtech did a good comparison against the P3700 and the Micron 9100 MAX, ironically the 9100 MAX has been the model I have been looking at to replace P3700’s in future OSD nodes. There are also the DC P4500 and P4600 models in the pipeline from Intel, also utilizing 3D NAND, however I have been told that they will not be shipping in volume until mid to late Q3. And as was stated earlier, these are all starting at much larger storage sizes, 1-4T in size, and with respective endurance ratings of 1.79 PBW and 10.49 PBW for endurance on the 2TB versions of each of those. Which should equal about .5 and ~3 DWPD for most workloads. At least the Micron 5100 MAX are finally shipping in volume to offer a replacement to Intel S3610, though no good replacement for the S3710 yet that I’ve seen on the endurance part. Reed
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