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Data Center Green Card Disclosure Number: IPCOM000198670D
Publication Date: 2010-Aug-11
Document File: 4 page(s) / 29K

Publishing Venue

The Prior Art Database


This disclosure describes the Data Center Green Card, a method of quantifying various data center parameters in a single benchmarked score to make tactical decisions for data center planning. It is a score card and checklist intended to rank labs on efficiency of energy use. The Data Center Green Card measures energy usage and determines energy efficiency, employs a ranking and scoring method, and determines a tiered approach for data center energy use when meters are not available. Quantifiable metrics and qualitative data, as well as calculations for Total Information Technology (IT) Load, Server Inventory, Server and IT Equipment Count, Total Energy Use in the Data Center, Power Usage Effectiveness, and IT Footprint contribute to the energy efficiency score given with the Data Center Green Card. It also provides suggestions for next steps to improve data center efficiency.

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Data Center Green Card

Other solutions base decisions on a single parameter rather than all parameters that affect the data center. A drawback to other solutions is the lack of exhaustive metrics, not taking into account qualitative measurements, not using a tiered approach to available data, and not providing a single score for ranking. The Green Card achieves all of these.

The Green Card performs 3 main functions:

1. Determining the efficiency of the data center

The main focus of the Green Card is a method of determining the efficiency of a data center. This is comprised of measuring environmental characteristics in the data center and inputting energy practice data into the Green Card.

2. Ranking data centers based on Green Score

A Green Score is then calculated by determining energy parameters (best practices), giving each energy parameter a component score based on energy savings Return on Investment (ROI), and calculating a Green Score based on the component scores.

3. Determining a tiered data center energy use when meters are not available.

Another focus of the Green Card is a method of determining data center energy use. Since different data centers have varying degrees of energy information available, there are a few ways of determining it. One unique feature of the Green Card is that is does not assume that energy data is available; which is often the case. It uses a tiered system of precision, based on the data available.

1. The first and most precise is an energy bill query.

2. If the first is not available, then Power Distribution Unit (PDU) Load is gathered from floor standing PDUs.

3. If the second is not available, then the server inventory is taken and an assigned (kilowatt) KW load and percent (%) usage is associated to approximate energy use.

4. If the third is not available, then the server and information technology (IT) equipment load inventory is entered only as a quantity of each. That quantity is then assigned a typical server and IT Equipment average and quantified as the least-precise energy usage approximation.

The Data Center Green Card utilizes the following specific metrics, calculations, and standards to determine the energy efficiency levels of a data center.

Quantifiable Metrics

The Green Card incorporates quantifiable metrics and uses them to rank labs regardless of their size or configuration. They are comprised of power usage effectiveness (PUE), IT load footprint, rack temperature, computer room air conditioner (CRAC) unit temperature delta (Delta T), lighting usage, perforated tile air flow, perforated tile temperature, perforated tile quantity, Final Install Check-off (FICO) Scores, and cubic feet per minute (CFM) of cooling installed.


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Qualitative Data

The Green Card also takes into account qualitative data center factors such as hot aisle/cold aisle configuration, rack alignment in contiguous rows, rack fillers, room configuration relative to cooling placement, CRAC unit prev...