We have setup, where 16-24, 2.5" Drives will be arranged in mobile racks of( 8 or 12 each).
We are selecting ATX SMPS to satisfy these needs.
We need to power these drives with a ATX Power Supply.
As these drives only takes current from 5V rail only. 12V and other rails were just not much required (12V required upto 100W).
I have seen specifications suggest maximum current from 5V rail close to 20A for 500W/600W ATX SMPS, and mainly(largely) power is mentioned on 12V rails.
If we are using only 5V on ATX SMPS of 500W, whether complete 500W or maximum portion of power can be taken from 5V? if no, How to find what is the peak current (for short duration) can be taken from 5V rail?