#raid #array #diskarray #enclosure #server #servercase #nas #networkstorage
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
Негізгі бет Ғылым және технология DIY Hard Drive RAID Enclosure for 8 Drives, 3U Rack Mountable
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