Data centers have shifted toward a pricing model for colocation based on power usage rather than the traditional dollar per square foot model.  For that reason, it’s important to have a clear idea of how to estimate your monthly equipment operating power.

The last thing you want is to buy more power density than you need, and not all data center colocation providers will take the time to help you assess those needs. Here is the quickest way to estimate your power needs.

For help identifying your colocation needs download our << Colocation Buyer’s Guide >>

Create a spreadsheet of equipment models

List the make, model and quantity of each piece of your equipment. Also, include columns for estimated power usage and actual power usage.

List the rating in watts of the power supplies in the estimated power consumption column.

This column is a valid number that you will never exceed. Think of it like reserving an entire restaurant for a party because you want to make sure you have enough room. In this case, you will be guaranteed the space, but most likely you will be paying for way too much.

Run the equipment list through a power modeling tool

IBM, HP and Dell all have their own flavor of a power estimation tool that will let you customize the number of processors, drives and memory in each platform as well as estimated workload.

These tools will help to greatly focus your estimated power consumption numbers and give you a much better idea of how much power you need to buy. List this information in the actual power usage column.

The biggest thing to remember is that most data centers will gladly sell you whatever you ask for.  I know this is only one of twenty items on your data center shopping list (on top of making sure you fill our your TPS reports). We offer to run the numbers for our customers. They send over the specs and we are happy to give our estimates.

When you’re in the market for data center space or considering colocation, this information will help you be able to better navigate the sales approach. Download our free Colocation Buyer’s Guide to get started today.