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BNY Mellon is a leading investment management and investment services company with
$26.6 trillion in assets under custody or administration. BNY Mellon's 71,000 square-
foot Northern Pennsylvania Processing Center (NPPC), built in 2006 and located north
of Pittsburgh, is part of a network of data centers that process over a trillion dollars in
transactions per day. Understandably, given these circumstances, managers of financial
institution's mission-critical data centers typically tend to be risk-adverse and uptime-
focused and not as concerned with efficiency.
However, BNY Mellon, a leader in sustainability among financial institutions, has long
demonstrated a significant commitment to the environment. For example, in 2011,49
percent of the real estate owned and operated by BNY Mellon was ENERGY STAR qualified.
BNY Mellon has reduced their internal copy paper usage by 28 percent since 2008 and
offset 75 percent of its domestic electricity consumption in 2009 through renewable energy
For data centers, BNY Mellon has tracked energy performance at all its data centers since
2006 through its Power Usage Effectiveness (PUE) program. PUE is a data center efficiency
metric that equals total power usage of a data center divided by the power used to run the
IT infrastructure. Data center efficiency improves as PUE decreases toward 1.
Due to its PUE program, NPPC became the second data center ever to earn the ENERGY
STAR Buildings designation in 2010 and has saved $1.7 million since 2006.
"BNY Mellon has had a significant commitment to environmental sustainability and operational
efficiency and reliability for quite some time. But these things don't happen without a lot of focused
attention and organizational effort. We look at the return on investment as well as the opportunity to
make lasting changes that will reduce our overall environmental footprint. This approach brings our
employees, management and supplier partners a real sense of satisfaction."
- Dan Gaffney, Director of Critical Infrastructure Group, BNY Mellon
BNY Mellon's PUE program led to the examination of many energy reduction opportunities
at NPPC by the Critical Infrastructure Group. Upgrades were only considered if they yielded
a complete return on investment (ROI) of less than three years. As with many data center
retrofit improvements, the efficiency upgrades at NPPC were also tied to data center
' BNY Mellon Corporate Social Responsibility Report Iwww.bnvmellon. com/about/csr/201l/csr.odfl.

capacity expansion. Ultimately, BNY Mellon's Critical
Infrastructure Group implemented the following
energy efficiency upgrades:
¦	Installing variable speed drives (VSDs) on fan
systems that led to an overall 25% reduction in fan
speed and a 58% reduction in overall fan system
energy use.2
¦	Fitting hot air collars at the server outlet that
directed hot server airto a return air ceiling plenum.
Additional airflow management measures such as
blanking panels and grommets were also installed.
¦	Increasing the temperature of supply air to the
servers from 72 to 78 degrees F. These higher
temperatures allowed BNY Mellon to increase the
chilled water temperature from 44 degrees to 47
degrees F,thus decreasing the energy and cost to
cool the water.
¦	Changing the humidification set points from
40% to 45% relative humidity (which varies with
temperature) to 41.9 to 59 degree F dew point
(an absolute humidity value) as recommended in
new ASHRAE guidance. This change in humidity
measurement parameters and humidifier control
reduced adiabatic humidification run-time from 80%
to 20% of the time.
In addition, the Critical Infrastructure Group evaluated
the benefits that would be derived from the installation
of a water-side economizer. Water-side economizers
allow forfree cooling (without the use of the chiller)
when outdoor temperatures are low. As often is the
case with water-side economizer retrofits, the capital
costs for the equipment upgrades outweighed the
energy savings leading to a payback of 14 years.
One of the major lessons from this project was that a
water-side economizer did not meet BNY Mellon's
ROI criteria.
As a result of the energy
efficiency upgrades,
¦	Became the second
data center ever to
earn the ENERGY STAR
Buildinqs designation
in 2010.
¦	Improved its PUE score
from 2.0 in 2008 to 1.52 in 2012.
¦	Saved 24 million kWh or $1.7 million dollars since
the PUE program's inception in 2006.
Beyond NPPC, BNY Mellon's Enterprise Data Center
PUE program has saved over $12 million dollars (160
million kWh total) since 2006.
In addition to the cost-benefit analysis yielding
the desired criteria of less than three-year ROI,
Mr. Gaffney believes that there were several other
organizational issues that were essential to the
successful completion of these upgrades, including:
¦	Having top-down commitment. BNY Mellon's
Corporate Socially Responsible Committee resides
within the Board of Directors and has overall
responsibility for BNY Mellon's sustainability efforts.
Without upper management's support of these
efforts, the upgrades would never have occurred.
¦	Using a local team. A local team, comprised of
BNY Mellon's Critical Infrastructure Group and their
property management and design engineering firms,
was brought together and empowered to make the
appropriate efficiency and sustainability decisions.
This was essential to the project's success.
" Since fan power draw is proportional to the cube of fan speed.
ENERGY STAR®, a program sponsored by the U.S. EPA and DOE, helps us all save money and
protect our environment through energy efficient products and practices. Learn more.
Vis it www. en e rgysta r. g o v.
July 31, 2012