Question about 1U Power Supplies

[LikeLinus]

So I've got a case that has 3 1U PSU slots and I need to pick up PSU for it. It's a 2N+1 which means two are used and 1 is for redundancy. I don't need the redundancy though as it's for a NAS. So can I only use two of them and leave the third slot open? Or will this cause any issues?

My other questions is if the PSUs have to be matching? Or can I use two PSU from different manufactures or even different power ratings? I'm curious because the original were 700 watts for a total of 1400 watts, but I'm not going to be using nearly that much and the same cpu/drives/mobo I'm going to use is the same one that I've been running off 750watt PSU. So could I get away with getting two 400watt PSU for a total of 800 watts and can they be different?

Sorry I've not had any experience with 1U PSUs and I have lots of questions! Any help would be greatly appreciated.

Thanks!

 

[rsutoratosu]

they're not universal, so chances are you have to find the one that works with the chassis and connector.

Depending on your motherboard/chassis. Some power can load balance between the two. if 1 power is out, it'll run the full wattage on the remaining power. so if you need 800, you'll need to get 2 800, it'll run in 400w mode till 1 dies and the working one continues to provide 800w to the server

 

[LikeLinus]

Gotcha. Thanks for the information, I do appreciate it!!