On-board data storage solution

[christiankuttke]

• HDD (spinning)
  • 16 € per TB at 14,18,20 TB (Toshiba Enterprise Capacity MG07ACA)
  • 8 W power consumption at full load - produces lots of heat!
  • produces vibration
  • Power supply (12V, 5V) via small sata power adapter from 12V possible
  • big (26x147x101 mm)
• SSD
  • 20 € per TB at 2 TB https://geizhals.de/mushkin-tempest-2tb-mknssdts2tb-d8-a2631106.html?hloc=at&hloc=de
  • 3 W power consumption
  • power supply 3.3 V is often done on adapter board
  • small (22x80x4 mm)
  • no vibrations
  • more shock resistance
  • Faster write speeds

Make a decision by specifying:

• How much data needs to be stored
• What environment will it be placed in
• How much space and ventilation will our enclosure have

[beniroquai]

We had several schemes for data storing. E.g. a RAW image every minute, JPEGs every second or even capture H.264-encoded videos. I can imagine that there is a lot of static background that could be removed.

Let's say we produce 100MB/minute and we let the microscope run 24h10days60minutes*100MB. This would be ~2TB.

Vibration is a thing. I would prefer SSDs. But has to be compatible with Raspi. We will probably use a Raspi4, so SSD needs to interface via USB.

[christiankuttke]

Raspberry Pi 4 has PCIe x1 lane compatible with nvme SSDs: https://www.raspberrypi.com/products/m2-hat-plus/

[beniroquai]

That's for Raspberry Pi 5 only, right? I'm tending to go towards that one. The 4 is freezing very often. Might be a specific thing with the model I have. Also, the raspberry pi can have the 7 inch screen which the jetson can't. I ordered the adapter cable from CSI to the pi5. Let's see. Now we need power 12V => 5V or whatever works best so that there is no voltage drop.

Message ID: @.***>