I managed to buy a personal NAS for own use.

Terramaster F2-210.

Very basic 2 slots NAS system that runs on company's proprietary Terramaster OS (TOS) based I think on Linux. Followed the instruction from Youtube review sites, its quite easy to set the unit up.

It allows the Raid setup or JBOD. Runs smooth, and rather silent for default fan speed. I am using it mainly to store data and stream video files (max 4K) without transcoding. I read that this basic unit of just 1GB RAM may not be sufficient to do Video Transcoding, so I just use Kodi from the Media player to do the work.

And it runs smoothly.

By and large I am rather satisfy with the product.

And it only costs RM382 for the unit!

Lazada does have cheaper units, directly from the official terramaster shop. When I went to official terramaster website and did some online queries, they actually can see my order from there, really to my surprise.