Hardware choice for industrial nodered

[ghayne]

@TotallyInformation

I have 2 Pi's that have been running on the same SD-Cards for several years now with no sign of any issues even when I've had power problems (mains, not the Pi's fault).

I can confirm this, I also have 1 Pi running for a couple of years on the same card (running Node-Red [v0.19.1]!)

[Paul-Reed]

@machadotiago

I'm suspect to talk, since I work for ST-One

I see the ST-One are using node-RED as a programming tool, is that deployed on the remotes (SD cards), or your central servers?
If on your remotes, (and without upsetting your employers ) are there any node-RED tips that you can share about system resilience?

[dceejay]

Tip #1 - buy from ST-One

[machadotiago]

It depends.
For most of our applications we have a software that generates the flow and send it to hardwares from our management platform, so that we don't need to open each and every ST-One for a simple change. As I said earlier, there is also a plan B, C and D in case we have any problem with that.

[darabontors]

@TotallyInformation

I'm not an expert but I would guess that this is to prevent the disk from being completely filled because at that point wear levelling is less effective. In addition, the controllers on SSD's are going to be more capable than those on SD-Cards and the algorithms are likely to be more sophisticated. I don't believe anything that complex would be implemented on an SD-Card which are, after all, largely consumer and photography based where space "missing" from an advertised size is likely to be noticed and reported negatively.

In addition, any partition should not be filled beyond about 80% capacity as it increases file fragmentation if you have large files and this can , in some circumstances, slow down disk read/write performance.

It all makes sense. Thanks for the info

[davidz]

Sorry to reply late.

We have Sandisk Ultra (not even the Extreme version) running from -20 degree C to 60 degree C year around to collect vibration, strain, temperature and distance data. The data rate is hundreds times higher than yours. We use RPI 3 (not even the RPI Compute module, which is the industrial version). The RPI3 and SD card never had any problems.

As other mentioned, you need to pay attention to the power supply design.
Also make sure that you get the authentic SD card.