Download "DIY Hard Drive RAID Enclosure for 8 Drives, 3U Rack Mountable"

I this video I made an aluminium disk array enclosure with no welding for 8 SATA drives. It has a mini ITX motherboard with an Intel CPU and as a power source is used a toroidal transformer. The enclosure has size 3U and is rack 19" mountable. I've had several power switching supplies burn out in the past, so I decided to build my own using a toroidal transformer. This power source has less efficiency but should last much longer than a standard PSU. The ATX PSU on the video is rated to only about 120 watts and by design there was only one molex connector included (to power one hard drive only) so I think the PSU 5V (and probably also the 12V) line would not be sufficient. That's why I added DC-DC converter to 12V and also a two separated DC-DC converters to split 5V lines into two (I did not have just one more powerful). And then I used the relay to switch-on the 12V line which is also an input to the 5V DC-DC converter. The connection: The 17V from the transformer is going to the rectifier (with 3 capacitors 35V), from the rectifier to the DC-DC 12V converter and paralelly to the ATX converter (12V to ATX power unit). The DC-DC 5V 5A converter is powered from the DC-DC 12V 20A converter. The relay is feeding the drives only (12V and 5V lines are taken from the DC-DC converters) and the signal for the relay to switch on is taken from the 12V line on the ATX converter (the line is live after the mainboard is powered on). Components: 1x mini ITX motherboard 1x Intel i3-9300 CPU 1x DDR4 memory module 1x PCI Express SATA 8 port expansion card 1x toroidal transformer with 17V output 1x ATX voltage converter (12V to ATX lines) 1x DC-DC 20A voltage converter (adjusted to 12V output) 2x DC-DC 5A voltage converter (adjusted to 5V output) 1x 35A rectifier (KBPC3510) 3x capacitors 10 000uF, 35V 2x metal buttons with LEDs 2x LEDs with metal brackets 8x SATA cables combined with SATA power 2x 120mm fans 00:00 Cutting aluminium profiles 01:39 Completing the profiles 10:15 Top and bottom done, measuring drive height 11:12 Fitting the locking mechanism of the drives 13:43 Installing a stopper for the drives 14:11 Installing the motherboard 15:58 Installing the CPU 16:54 Installing the memory 17:08 Installing the PCIe expansion card 18:03 Installing the ATX voltage converter 18:42 Installing the DC-DC 20A 12V voltage converter 19:05 Installing the rectifier 19:48 Installing the DC-DC 5A 5V voltage converter 19:53 Installing the toroidal transformer 21:45 Creating the front panel cover 27:32 Installing the main power connector 28:23 Installing SATA cables 29:58 Installing the DC relay 30:25 Connecting and managing all wires 31:29 Installing the front panel 32:13 Connecting SATA cables 32:52 Installing FANs 34:03 Installing the disk drives 36:50 Putting disk drive to the case 36:11 Final product demo