How to account for rudundant PSU's

[Anonymous user]

When planning a new UPS system, what is the proper way to account for redundant PSUs when planning UPS capacity? For example, if I have a server that has (2) 500W redundant PSUs should the UPS be scaled to handle 1000W or just 500W. I realize this isn't best practice for full redundancy and that the example is probably over simplified, but I am just trying to get an understanding of how I should account for that in my UPS design. Thank you.

[Anonymous user · Accepted solution]

Hi Skapykat,

You should size your UPS based on the total load. On most servers, the hardware should distribute the load evenly between the 2 PSU's although some newer lines allow you to specifically configure these loadings.

I hope this helps,

Paul.