Found someone who sold the
4 x WD Purple disks on marketplace with less than 10k hours each for really cheap. That was an extremely lucky find!! ✨️✨️

Specs:
- Motherboard: ASUS B85M-G
- CPU: Intel i7-4790K
- RAM: 16 GB DDR3

- Storage:
4 × WD Purple 2TB
2 × Toshiba P300 3TB

- Controller: LSI 9217-8i HBA [IT mode]
- Extras: eSATA bracket

[Temp node (ESP8266)]--->
(ESP-NOW) --->
[Hub ESP32] --->
(Python script) ---> (USB)--->
[MQTT Broker] ---> (Network) ---> [Home Assistant]

(HA updates its read from MQTT every 20 secound)

All the nodes send their readings to a central hub running on an
(ESP32-dev board) connected directly to the hardware of the MQTT server.

The hub runs a small Python script that forwards the collected data into an MQTT server.