My review of the three MS-01 cluster I have (I was asked for my opinion by a forum member and thought others may want to see it too).
I think it's okay. I like the low power draw and the low noise. I'm not a fan of the form factor, or motherboard layout. MinisForum (MF) - the company, is also very small and not great at updates, shipping, business in general.
It was a fun challenge to build, but if I had to do it again, I'd just get short depth server chassis and make my own. I've also found the constraints of working with the MS-01 design awkward. MF chose a PCIe 4 x4, PCIe 3 x3, x2 slot for the SSDs. That makes onboard storage weird. They chose a PCIe 4 x16 slot, limited to x8, for the add-on card slot. Only one. They chose 2 10gps SPF slots, I'd rather have 25gps. 2 2.5gps is fine, vPro is "Meh". I don't need/use the USB4 ports or any of the other ports - except one to run a fan - so they are wasting valuable PCIe lanes for me. The i9 chip is fast and has lots of cores and that's useful. It's to bad it's an integrated laptop CPU. I'd rather have ECC server RAM, than the laptop RAM. Being limited to 96GB of RAM is a bummer too. A single power supply brick, is annoying. I'd rather have dual, hot swap power. U.2 drive space is nice, but it's limited to 7mm (15.8GB). I've given the MS-01 it's max spec and will never be able to upgrade it (beyond SSD space). I didn't know I'd feel this way when I ordered them (knowing they were more like laptops).
I've supplied everything except the chassis, CPU and mobo. I'm not sure the value is there, once the build is done.
I've replaced the WiFi card with a Corel TPU, the power supply with a 240watt and, cut a big hole in the case - for a 140mm USB fan. I also added a dual port 100gps Connectx-5 NIC. I suspect if you're not going to do that, and are fine with the MS-01 choices MF made - the value is strong. If the MS-01 is just a desktop for web apps, it's overkill. I think it's best use is connected to a JBOD enclosure and used as a single home server.
I still find the cluster WAY beyond what I need, and I imagine, it would be beyond what most home users would need, for the next 5 years. I don't have any stability issues. Three MS-01 like I've built, three MikroTik 100gps switches with LOTS of DAC cables - pounding out Proxmox/Ceph cluster work loads, uses up about 180watts. Pretty impressive I think.