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Future Cars Face Terabyte Memory Load

MADISON, Wis. – For a highly automated or outright self-driving car in, say, 2020,  how much memory capacity, to capture, process and store data, will be enough?

A consensus among experts in automotive and memory industries is this connected vehicle will require data storage of at least hundreds of gigabytes (GB) and probably a terabyte (TB).

With that prospect in mind, Western Digital rolled out earlier this week a new embedded flash drive, called iNAND 7250A, specifically designed as an automotive-grade storage device able to perform reliably in extreme conditions in and around the vehicle — including ambient temperatures down to – 40o C and up to 105o C.

Western Digital is predicting “a dramatic growth” in memory demand on the automotive market over the next five years. Martin Booth, senior director of automotive devices product marketing for Western Digital, told us the need for more data storage space per vehicle is no longer just driven by infotainment systems, but by ADAS and autonomous cars needing intelligent data storage subsystems to achieve greater safety. 

Intel sketches out an autonomous vehicle of 2021 (Photo: Intel)

Intel sketches out an autonomous vehicle of 2021 (Photo: Intel)

But a TB of memory for a car of the future? Seriously?

We asked Western Digital and industry analysts to break it down. We began with current semiconductor storage demands.

Mike Demler, a senior analyst at The Linley Group, told us, “I don’t have a solid figure, but on average I expect it’s currently relatively small. There are about 60 processors per vehicle, but they’re mostly 8-bit MCUs with a small amount of flash per chip.”

However, Demler added, “In a luxury car like a Tesla, with the big flat screen display, the storage requirements start to look like a standard tablet (10s – 100s of GB).”

Thomas Coughlin, the founder of the data storage consultancy Coughlin Associates, agreed that the infotainment system is already using hundreds of GB for storage and memory. This will only increase with ADAS and higher-resolution entertainment. “In general what bulks up the storage needs are video–both for the car vision system and entertainment.”

Processing sensory data
The big change in the automotive memory landscape, though, is growth in the sensor data ADAS and automated cars must process, constantly and immediately.  Equally important is how much of that captured data must be retained.

Typically, a highly automated car relies on a number of sensors – HD cameras and lidars – to read its surroundings. As many as eight HD cameras are already present in advanced cars, with lidar coming soon.

A Google car (now Waymo), for example, processes a gigabyte of sensor data per second, noted Coughlin.

Western Digital’s Booth explained, “Sensor data itself would be compressed first and then stored in a buffer.”

For autonomous vehicles, most of the data is processed and only a fraction is stored, Coughlin explained. Although some of this will go to the cloud, “real time data processing must occur in the car,” he added. 

To read the rest of this article, visit EBN sister site EE Times. 

3 comments on “Future Cars Face Terabyte Memory Load

  1. healthinfo88
    May 14, 2017

     should say many many thanks. I am very happy today because ni. I'm glad to see this page.

  2. LiamPI
    August 8, 2017

    It's pretty amazing how much data can be stored in such a small amount of space. I'm sure as things progress, more and more data will be stored in small areas that are completely inconspicuous. It's actually fascinating to think about what the future holds for self-driving vehicles. Fantastic article, thank you.

  3. ChristopherJames
    October 18, 2018

    Cars are so advanced in this era that it isn't just about who has the fastest car anymore. All other features that one could find in a vehicle matter just as much. Apart from performance and outlook, consumers nowadays are just as concerned over technological advancements a vehicle could offer too. All of which requires advanced storage solutions which are necessary to facilitate a state-of-the-art driving experience at a safe and secure environment.

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