ThinkNAS - 4x HDD NAS enclosure for Lenovo M920q

ThinkNAS - it's a compact, 4 HDD bay enclosure, compatible with Lenovo ThinkCentre M920q  (and M920x / M720x) mini PC.

Ideal for Truenas or Proxmox, XCP-NG etc.

It's using 120mm fan at the back to cool all the stuff inside :)

Size: 16.8cm (width) x 19.6cm (height) x 25.1cm (depth)

Used parts:

• Lenovo ThinkCentre M920q PC obviously :)
• M920q compatible PCIe riser [LINK]
• ASM1166 PCIe to 6x SATA Controller [LINK] if you want use NVMe version check below:
• If you want to use ASM1166 NVMe version, to free up the PCIe slot (so you can connect better network card or other stuff), you'll need NVMe extender like this: [LINK], and also ASM1166 NVMe controller [LINK]
• SATA Male to female adapter ("backplane") [LINK]
• SATA cables (50cm will be enough)
• USB powered FAN controller [LINK] or [LINK2]
• 5525 12V at least 6A power supply - for supplying power to disks [LINK]
• 5525 to SATA splitter - from power supply to HDD/FAN(s) [LINK]
• 120mm FAN - I've used Arctic P12 PWM

Screws:

• 6-32*6mm screws for ThinkNAS case and for installing HDD disks into caddy [LINK]
• M3*10mm screws for installing backplane to NAS case [LINK]
• M3*20mm screws for installing handle with HDD caddy

For rear fan it's recommended to install some fan grill.: https://makerworld.com/en/models/1332105-screwless-120mm-fan-grill-with-distance-no-whine#profileId-1370582 

PCIe SATA Controller ASM1166 bracket compatible with Lenovo M920q (and others) is here: https://makerworld.com/en/models/1246251-lenovo-m720q-m920q-hdd-controller-bracket-asm1166#profileId-1267786 

Be sure to print it at least with PETG filament, so it'll be more heat resistant, than PLA.

If you're searching for smaller, 2-bay version - you can find it here: https://makerworld.com/en/models/1280680-thinknas-2x-hdd-enclosure-for-lenovo-m920q#profileId-1308483 

Even bigger 6-bay version: https://makerworld.com/en/models/1737570-thinknas-6x-hdd-nas-enclosure-for-lenovo-m920q#profileId-1846272