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Plus, strategies like what is described in the article will become more useful as the usable bandwidth to NVMe improves. The write endurance limitations won't d

Plus, strategies like what is described in the article will become more useful as the usable bandwidth to NVMe improves. The write endurance limitations won't disappear or see massive improvement, but NVMe is apt to keep droping in price, and perhaps Intel will figure out how to manufacture XPoint at a reasonable price, providing flash memory on the low latency, high bandwidth DDR bus. Not holding my breadth on XPoint, but it would be a sea of change if Intel can figure out its production issues (and price it significantly cheaper than DRAM)! https://semiaccurate.com/2018/05/31/intel-dodges-every-question-at-apache-pass-xpoint-launch/ https://semiaccurate.com/2018/05/31/intel-dodges-every-quest...

ksec 8y ago
To answer the above comments. 1 Million for 1000 Addtional Servers. And that is precisely my point. A saving of 1 million is a drop in the bucket for facebook. They will have to grow out of their current additional capacity, and ADD another 1000 Database Sever to achieve this saving. That is 3PB of Data, I doubt if they store video or images in it. So this is still quite a large amount of data, even for Facebook. NVMe isn't going to see price drop, not in 2019 and 2020. Right now Intel aren't making much money for Optane. So any yield or other improvement would only increase Intel's margin. For it to see a significant price drop would require some ground breaking changes. Which I doubt will happen in 2 years time frame. Testing the NVMe on DIMM would be a much more interesting test. For the 128GB Server price that could have 1TB of NVMDIMM, although I think the speed would be decreased, the question is, would the speed still be acceptable? I think this is merely an exercise for Facebook engineers to play around with.