Best Power setup for 50pc HDD

Anyone here has any recommendation for 50PC HDD power setup. I am currently using one mining PSU 1800WATT but it ONLY has 5V 30Amp. So if i hook up to more then 25HDD, my hdd power become unstable as my hdd will auto restart by it self as i can hear the HDD motor sound after 20 or 30 minute.

Then i get an 700WATT psu which has about 5V 22amp, this only able to get less then 16 HDD before it give me same problem.

MY stock XEON PC has a 1000Watt PSU but it only manage to to hook up around 10 HDD.

I dont think i need to consider the 12V line because i am using it as external PSU so it should be more then enough since it only powering HDD.

You just need to get a few 12v to 5v voltage converters so you can get some more 5v amperage from your 12v lines. I use these: BANKEE DC 12V 24V to 5V 15A Converter DC Voltage Reducer Regulator Step Down Buck Converter Power Supply Volt Transformer Module (12V/24V to 5V 15A) : Electronics

And you can see how I wire them up here: Scalable DIY SATA JBOD - Will store over 250 Disks! - #34 by enderTown

thanks bro, Your link its very helpful to me…I appreciate it alot