I did stumble across Samsung PM1725/a in both AIC and 2.5” U.2 form factor.
AIC starts at 1.6T and goes up to 6.4T, while 2.5” goes from 800G up to 6.4T. The thing that caught my eye with this model is the x8 lanes in AIC, and the 5DWPD over 5 years. No idea on how available it is, or how it compares price wise, but comparing to the Micron 9100, you can get 5DWPD compared to 3DWPD, which when talking in terms of journal devices, which could be a big difference in lifespan. And from what I read, the PM1725a isn’t as performant as say the P3700, or some other enterprise NVMe drives like the HGST SN100, its still NVMe, and leaps and bounds lower latency and deeper queuing compared to SATA SSDs. Reed > On Jun 8, 2017, at 2:43 AM, Luis Periquito <periqu...@gmail.com> wrote: > > Looking at that anandtech comparison it seems the Micron usually is > worse than the P3700. > > This week I asked for a few nodes with P3700 400G and got an answer as > they're end of sale, and the supplier wouldn't be able to get it > anywhere in the world. Has anyone got a good replacement for these? > > The official replacement is the P4600, but those start at 2T and has > the appropriate price rise (it's slightly cheaper per GB than the > P3700), and it hasn't been officially released yet. > > The P4800X (Optane) costs about the same as the P4600 and is small... > > Not really sure about the Micron 9100, and couldn't find anything > interesting/comparable in the Samsung range... > > > On Wed, May 17, 2017 at 5:03 PM, Reed Dier <reed.d...@focusvq.com> wrote: >> 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. >> >> http://www.anandtech.com/show/11209/intel-optane-ssd-dc-p4800x-review-a-deep-dive-into-3d-xpoint-enterprise-performance/ >> >> 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 >> >> On May 17, 2017, at 5:44 AM, Luis Periquito <periqu...@gmail.com> wrote: >> >> Anyway, in a couple months we'll start testing the Optane drives. They >> are small and perhaps ideal journals, or? >> >> The problem with optanes is price: from what I've seen they cost 2x or >> 3x as much as the P3700... >> But at least from what I've read they do look really great... >> _______________________________________________ >> ceph-users mailing list >> ceph-users@lists.ceph.com >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
