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Originally Posted by Phoenix32
I don't think adding Caps to the power supply will help. 11 Seconds is a long time for a Cap to assist. -AND- Those caps still need to be charged. Which means they would draw more current to charge at the crucial time we need all the current to spin up our drives, thus having the reverse effect. Maybe not, but this is what I suspect.
As for the 4100, 1.5 A; each for the drives in a 4100 for normal operation is plenty I would think. No drives I know of draw that much current while idle or even accessing; it is the spin up that is the killer. Sure, the 4th drive that is powering up might draw 2.6 A; or say a larger drive drawing 2.8 A; during spin up, leaving only 6 A - 2.8 A = 3.2 A for the other 3 spun up drives; 3.2 A / 3 Drives = 1.07 A for each drive. I think this is enough for most any ATA drive I am aware of for normal idle or accessing. If not, remember, even that power supply has a little extra in reserve for PEAK load. In other words, keep cracking away on that LBA48 solution.  |
Ideally you would charge the caps after install and before you power up the unit by detaching the drives and using a resister inline so that the caps don't suck all the power at once and fry the power supply. After the caps are charged, plug the drives in and start up as normal. The caps supply the startup current and then recharge when the drives stop drawing as much power, just like a car audio cap on a subwoofer amp. I can't imagine that these drives draw peak current for 11 seconds. It doesn't take a drive that long to spin up. I am thinking 2-3 seconds, tops.
True about the 4100 power supply. I just hate "barely adequate" power solutions. Seems like it would work, and I was in no way telling people not to fix the LBA 48 bit issue, trust me. I would love to have 4 750 GB drives in my unit
