Quote from: superfastkyle on March 19, 2014, 01:43:38 AM

But I have my motherboards on "on after power loss" and I can reset my systems from anywhere. Also it will switch them on one at a time so you don't surge and trip your breaker

The only bad thing is it comes up with warning at over 24amp's. I don't think it hurts it to run it over that though

We do the same thing with power on after loss, and it's a great way to remotely reboot a rig.

As far as turning them on one at a time, I don't think you really need to do that. Unlike a mechanical motor that pulls the most amp draw on startup, mining rigs don't really start to pull their max amps until they're already booted and they start mining. I mean it's not going to hurt, but it's also not completely necessary.

We do time our startup on to have a built in delay for our rigs with dual PSUs. We have the PDU turn on the PSU connected to just the GPUs first, and then 10 second later we turn on the PSU that turns on the rig. We do this to prevent the rig from turning on without registering the GPUs that may not have been fully powered yet.

And lastly, you do want to be careful of pulling too many amps, and you also may need to load-balance your PDU. Our PDUs only have 8 ports, and are rated for 24A, but we accidentally drew 25A exclusively on the right 4 ports, leaving the left 4 empty. It blew an internal fuse, and now those right 4 ports are unresponsive, and it reports a fuse error. Seems the whole unit has a limit of 24A, but the left and right halves also had internal fuses that can't draw the full amount. We're basically left with a 4 port, 12A PDU until we can open it up and replace that fuse. Moral of the story: Load balance is your friend.