This is a guest post from Mike Montemorra, who is a technology guru with long and successful career in computer industry. Mike keeps an eye on the latest developments in computer and storage technology and publishes his observations weekly. Below is his brief summary of what was important in the past week.
What did we learn last week?
Here are some interesting tech bits from the weeks’ news. I hope you find these both interesting and useful. Enjoy!
Our friends at Backblaze have published another update to their HDD reliability stats, this one through CQ119. It looks like Toshiba’s 9 disk MG07 drives are performing quite well (they did a very nice job of engineering this 9-disk platform), but Backblaze is currently a heavy Seagate drive user and those drives play reasonably well given the number of drive-days in their data set. They also noted that they are testing a handful of both HAMR and MAMR drives… we can’t wait to see what they publish on these drives.
This 3 foot high stack represents a scale model of a small section of a 96 layer flash device! Jim Handy was lucky enough to be offered a bit of a tutorial on what 3D flash looks like at the nano-scale. Watch the video in here and then ponder the roadmaps touting 128 and perhaps even 256 layer 3D flash! That layer cake might just tip over…
It’s pretty cool to watch MRAM technology maturing, but for those of us awaiting its use as a DRAM replacement, it is a painfully slow maturation taking place. However, it looks like good progress is being made on spin-orbit torque (SOT) MRAM and that CY19 may just be the year we see eMRAM emerging as a non-volatile DRAM replacement technology in some applications. Note that thie work shown here was done in the lab on standalone devices, not sitting on top of topography where some of these effects might be a lot harder to control, but it is great progress nonetheless.
Here’s an interesting spin on host-managed SMR system architecture with a proposal that should improve the data efficiency of these systems. As these types of server architectures proliferate, we can expect some of the best ideas proposed by these and other authors will become more widely used.
We’ve talked about the potential for bismuth ferrite (BiFeO3) in the past but it now looks like this material has some very interesting properties if only they could be harnessed into a working storage system. Research into how to make this happen has yet to happen, so don’t be looking for those 250TB hard drives any time soon…
As hybrid data centers proliferate, it more important than ever to reduce latency between sometimes widely spaced cloud nodes. The photonics industry is doing a good job of attempting to keep up with the massive datarate transmission requirements over long distances using the technologies like WDM (Wavelength Division Multiplexing) along multimode fiber optic cable at speeds up to 400Gb/s (400GbE) at distances of up to 100km (~62 miles). Cool! These modems have adaptable data speed/fidelity algorithms and are capable of even higher datarates at shorter distances…
Well, this is likely to be just the beginning of large-scale NB-IoT deployment announcements worldwide. This one by AT&T is effectively a 3G deployment using the release 13 NB spec, so it has a lot of latency, but who really needs low latency when you are transmitting at 250kb/s. This is all going to explode when 5G networks become pervasive inn coming years.
‘Save everything’ seems to be what Facebook does, partly in an effort to keep you interested in their platform by reminding you of past events in your life, along of course, with some specifically selected (and related) ads. This highlights both the strengths and weaknesses of the Facebook approach, but one thing that is certain, retaining and filtering through all this history requires ever more memory.
It looks like some of those peer-to-peer WiFi connected security devices you may be using could have code flaws that enable eavsdropping. This article exposes the potential weakness in some of them and has some advice for those of you contemplating a purchase.
You can classify this under ‘I hate it when this happens’ … you know, those railings are there for a reason! This guy is lucky he didn’t get smoked!