I am partial to the raspberry pi computer series because it runs good ole GNU Linux, a friend I’ve been working with for a decade and a half. This is a video explaining one of my little projects, an attic server with Network Attached Storage.
The server is composed of several distinct parts
Raspberry Pi Zero
USB HUB
HDD
WIFI card
RF link at 433 Mhz
Fan + 5V 1.3A power supply

w/o Fan or RF

w/ Fan & RF Tx