Eitan-UpSwift wrote: ↑
Tue Aug 27, 2019 11:23 am
Which functionalities are you looking for as part of the management solution?
Either way, I wouldn't downgrade to older models because of a lack of support for specific software (PiServer, in your case).
I agree. The final deployment should consist of only Raspberry Pi 4B and not a single 3B or 3B+ computer.
However, for testing and learning how things work, it may be reasonable to try a couple Pi 3B+ computers, because PXE-style net booting for that model works and is well documented. You then gamble that the Pi 4B will eventually boot in a way that is either plug compatible with the 3B+ or that the differences are minor.
Note that an expert should be able to put together an SD card with a second stage network boot loader that allows reasonable levels of remote administration even now. However, since the foundation has indicated a priority of netboot for the built-in bootloader, then gamboling along without worry developing your own remote infrastructure using the Pi 3 seems reasonable while someone else does the heavy lifting to implement a similar style of network-boot for the Pi 4.
On the other hand, since you've already purchased the Pi 4 computers, getting something to work quickly is likely important. Moreover, if this deployment is for a university campus, then setting up a suitable PXE boot server in every building on every subnet could, in itself, be a headache. In that case and others, it may still be preferable to have a second stage bootloader on the SD card that knows how to fetch the Linux kernel and initial RAM disk remotely through https.
Do you need the dual display capability of the 4B?