When choosing your hardware, the SBC community is not necessarily relevant since you will be deploying a NEMS Linux server specifically. For example, the ODROID C2 vs Raspberry Pi 3 comparison will say Raspberry Pi 3 has better support for video drivers. Well, that shouldn't matter to you; you're using NEMS Linux and we've pre-built the distro for you. So because of this, we've compiled this list to help you select your hardware based on NEMS Linux, not general usage.
We are currently monitoring all Raspberry Pi 3 NEMS deployments to guage real-world capabilities as far as how many hosts NEMS can safely monitor. The community has several NEMS servers which monitor 100-150 devices and are running with a low load, which is encouraging. Based on data collected so far, 500 hosts seems entirely possible.
To differentiate between the two available versions of the Pi 3, we'll call first-gen “B” and second gen “B+”.
Significantly slower than other SBCs, Only 1 GB RAM and no possibility to upgrade, slow SD card reader, Ethernet on the B is 10/100, and the B+ can only achieve a maximum of 330 Mb/sec, USB 2.0 is shared with the network port so networking will slow down if using heavy load on USB devices such as external storage. SD cards are prone to failure.
Opt only for fast Class 10 cards. The faster the better. See this list for compatibility information as not all SD cards will work on a Raspberry Pi.
Coming Q2 2018
We have yet to begin collecting data on this device. The XU4 should be able to handle networks 3-4x that of the Raspberry Pi 3, and will handle smaller networks with better performance and reliability.
8 Cores Across Two Processors - Cortex-A15, 4 cores, up to 2.0 GHz (minimum 3.5 DMIPS/MHz per core, up to 4.01 DMIPS/MHz per core) + Cortex-A7, 4 cores, up to 1.4 GHz (1.9 DMIPS/MHz per core)
2GB LPDDR3 (933 MHz)
Significantly better performance: 8 cores up to 2.0 GHz, Gigabit Ethernet, 2 GB RAM (twice that of the Pi 3), SD card slot is significantly faster (UHS-I) but better yet: support eMMC which is much faster and more reliable than SD cards, has 2 USB 3.0 ports ideal for fast external storage.
Runs hotter than Pi 3, more expensive.
Coming Q3 2018
We have yet to begin collecting data on this device.
Low power consumption and footprint for a powerful unit, 16 GB RAM, M.2 storage, Gigabit Ethernet, Runs cool with passive cooling technology (no fans).
Coming Q1 2019
Utilize existing virtual infrastructure
It doesn't exist yet