I have a need to tie in multiple PSUs together. In a perfect world, I just buy c-payne's 4 PSU redundant backplane but he is on vacation and it's in EU and I'm US based and I don't have the time for all that. (Will buy, just need something NOW).
What I do have is a large stock of older hardware, in particular I have a few DL580 G7s. I took my trusty drill and I drilled out the cage for the 4 PSU setup it uses to include the psu backplane. What I'm struggling with is figuring out how to get the psus to come off standby and actually power on.
What I know:
Outside of the large connector that feeds the CPU board with multiple large 12V feeds and a bundle of small wires, there is a small 10 pin connector that feeds 5x 12v and 5x ground to the adjacent IO board that also houses the SPI board. This is what I'm sure gives power to the SPI board when the PSUs are in standby mode as I've verified it spits out voltage when the PSUs are not actually "ON" but plugged in.
There is another 8 pin connector that is used to provide power directly to the 4 fans in the center of the chassis. They get tach and rpm signal from the same IO board that the SPI board connects to and that gets power.
This leaves me with the small bundles of wire that go with the large 12v feeds to the main board. Of course, there is no diagrams, pinouts, or what have you anywhere online for this. I have stuck a multimeter to the back of it and I see 3.3 / 5v present along with lots of grounds. I'm not sure what I need to do here though.
I have "cheated" and performed the typical HP mod to power a singular one up by soldering a 22k ohm resistor and a toggle switch to the appropriate pins on the back of the solder joints for one of the PSUs on that backplane. This does indeed turn on PSU and I finally get 12v at the large fat mains. However I know that there has to be a solution for me to turn on the PSUs all at once via the backplane.
Does anyone have any ideas on what I need to do to accomplish this?
What I do have is a large stock of older hardware, in particular I have a few DL580 G7s. I took my trusty drill and I drilled out the cage for the 4 PSU setup it uses to include the psu backplane. What I'm struggling with is figuring out how to get the psus to come off standby and actually power on.
What I know:
Outside of the large connector that feeds the CPU board with multiple large 12V feeds and a bundle of small wires, there is a small 10 pin connector that feeds 5x 12v and 5x ground to the adjacent IO board that also houses the SPI board. This is what I'm sure gives power to the SPI board when the PSUs are in standby mode as I've verified it spits out voltage when the PSUs are not actually "ON" but plugged in.
There is another 8 pin connector that is used to provide power directly to the 4 fans in the center of the chassis. They get tach and rpm signal from the same IO board that the SPI board connects to and that gets power.
This leaves me with the small bundles of wire that go with the large 12v feeds to the main board. Of course, there is no diagrams, pinouts, or what have you anywhere online for this. I have stuck a multimeter to the back of it and I see 3.3 / 5v present along with lots of grounds. I'm not sure what I need to do here though.
I have "cheated" and performed the typical HP mod to power a singular one up by soldering a 22k ohm resistor and a toggle switch to the appropriate pins on the back of the solder joints for one of the PSUs on that backplane. This does indeed turn on PSU and I finally get 12v at the large fat mains. However I know that there has to be a solution for me to turn on the PSUs all at once via the backplane.
Does anyone have any ideas on what I need to do to accomplish this?