Many fan connectors are designed to provide a fixed amount of power, and on most motherboards, this is just enough to power one fan with a reasonable safety margin. Ps: i really like your wiki, but there is a missing part for iOS backup, struggle a bit to move my iOS backup on Unraid, if i can explain how i did it it will be my pleasure.You're going to be safer and get better behavior from the system if you put one fan on each connector instead of using a Y-cable. I bought Unraid because HDD are in standby if not in utilization, which is really good then i wanted to switch off the fans. I dont really know if there is a way to configure my fan speed according to HDD temp without passing through the motherboard, seems like the Define case have a small board to control fan speed, but don't know how it works. Meaning that every fan is working at the same speed, basically, the max speed which is not really good (use the stock cpu fan of my i3 cpu which run at 1200 rpm). I configure my bios to be in the quiet mode and my fans case and plugged in onto the cpu fan. So, i bought a Define XL R2 case, hoping it will help and should receive it in few days. So i decided to add some acoustic foam all inside the case, but the noise persists. I contacted Asus but they offer no support for Linux for this motherboard. My Motherboard is a P8Z68-V LX from Asus, and i can't control fan speed inside Unraid (no sucess with Dynamax Fan Auto Control, IPMI or lm-sensors). My main problem is the noise even if i use only new Noctua fans. I bought Unraid Plus but i clearly need to switch to Pro, because i wanted to add more drive, don't know if there is a way to have a discount, because switching to Plus to Pro is more expensive than if i bought the Pro directly which is my mistake.
I use 12 disks (2 parity + 10 data disks) in an old case with an old cpu/ram/alim and motherboard. I am testing Unraid for 3 weeks, and i guess now everything is set up and working.