Inwin Development IW-MS04-01-S265 265w Mini Server ITX Tower (Case Only)

This case was exactly what I was looking for. A 4 bay, ITX NAS chassis that is small, and isn't super expensive. That turned out to be not such an easy task. The only other option I could find that was readily available was a SuperMicro chassis that was basically the exact same as this one, but more expensive, and required a front panel wire adapter if you use anything but a SuperMicro motherboard.It has a good, if maybe a slightly loose slim ODD mounting system. I used this bay for an Icy Dock 2.5" hot swappable bay(12.7mm model). The thermals are pretty good, but not great. It seems the rear fan ends up pulling a lot of air through the side vents instead of through the hard drives. So I put some painters tape over the side vents( I may be doing the same to my front vents soon too).The product page doesn't specify, but this 100% comes with the 265w power supply. On that note, it is very good. The fan is pretty quiet to where I couldn't hear it over the hard drives. and even with my ear right next to it, I heard no whining or hissing coming from it, which I was not expecting. I was really expecting it to be kinda garbage. It also has all the perfect cables for the case, at the perfect lengths, with an extra set of two SATA connections, just in case you need them.I think the biggest downside for my on this case is the backplane. More specifically, the fact that it doesn't pass through the HDD temperature data to the SATA controller. SMART data does, just not live temperatures. So in TrueNAS, I can't monitor the temperatures in real time, I have to wait for it to finish a SMART test, and then read the results of that. If it weren't for that, the backplane is fine. it can control the fan if you want, and can have its fan curve changed with some DIP switches. Along with a GPIO header which it provides a pinout for, but I'm not actually sure why it is there or what can interface with it.

TL;DR - seal off the side vents to force airflow over the drives and reduce temps.I'm using this for a TrueNAS Scale based home file server. Motherboard (and CPU) is a Supermicro A2SDi-8C-HLN4F. I added a Solarflare SFN5154F (single port SFP+) 10Gbps NIC. System boot drive is NVME m.2. Storage drives are two 4TB 2.5" SSDs, and four 14 TB 3.5 spinning drives. I'm not pushing it too hard, but everything works fabulously. The only app I'm running is Nextcloud. I have another big server running Proxmox, and this fileserver is the backing store for all my containers and VMs, as well as storage for everyone in the family.I'm writing this review mainly to suggest to others a (likely) way to improve drive temps: close off the side vents on the chassis. I used black construction paper and aluminum tape to seal off those side vents. To be fair, I did not take before and after temperature measurements - sealing those vents was the very first thing I did. But the idea is sound: we want to force the airflow (from the 120mm chassis fan) through those drives. With those big vents in the side of the chassis, the airpath will short-circuit, and little to no airflow will pass over the drives (unless you use a crazy high RPM industrial fan).Note also there is room for a larger 120x38mm fan. In the spirit of full disclosure, I did replace the stock fan with a Delta AFB1212SHE-PWM, but it's only running at 800 RPM. In hindsight, I really don't think this was necessary. The stock fan is likely fine, but if I were to do it all over again, I'd take a hard look at the Arctic Cooling dual-ball bearing "CO" (continuous operation) fan (ASIN B07GSRRHZT), Nidec Servo GentleTyphoon (ASIN B017UX9DRA), or Noctua NF-A12x25.Most of my drives live around 35C, the hottest one will sometimes hit 43C. I think these temps are perfectly fine for long-term health of the drives.I'm using the included 265W Flex PSU that came with the unit, and it's working fine. My whole system only uses about 50 Watts (measured from the wall with a Kill-a-Watt). Usually the power supply is where I don't like to try and save money, but I'm hoping that with my low power draw, and the fact that InWin is a huge OEM, this power supply will last for a long time. If the power supply fails quickly, or you want to replace it right away for a better brand, then I don't think this case would be a particularly good value. I.e. if you consider the advertised price for just the case without the PSU, then there might be better options (but I haven't tried them).But based on how happy I've been with this case, I'm about to buy another to build a similar NAS system for a friend.