CoreSite Achieves “Six-Nines” Availability for Third Consecutive Year

  CoreSite Achieves “Six-Nines” Availability for Third Consecutive Year

Business Wire

DENVER -- February 24, 2014

CoreSite Realty Corporation (NYSE:COR), a provider of secure, reliable,
high-performance data center solutions, today announced that for the third
consecutive year it has achieved an average uptime exceeding 99.9999 percent,
or “six-nines,” across its platform of data center facilities.

Six-nines availability reduces unscheduled downtime to less than 32 seconds
per year, against CoreSite’s 100%-uptime service level agreement. Compared to
the industry benchmark of five-nines availability, which correlates to
downtime exceeding 5 minutes annually, six-nines availability provides
businesses with nearly 10 times the statistical reliability in the data center
environment supporting optimal performance of mission-critical data and IT

“We are pleased to again be an industry leader in data center reliability,
reflecting the professionalism, training and care of our facilities teams as
well as the high quality of our enterprise-class data centers,” said Tom Ray,
CEO at CoreSite. “As part of our commitment to provide best-in-class service
to our customers, we take pride in providing exceptionally high levels of
reliability across all of our product and service offerings. Achieving
six-nines availability for the third consecutive year, including 100-percent
availability through Hurricane Sandy in 2012, is a testament to the quality
and dependability of those services and our people. Importantly, the
reliability of our data centers underscores the high standards and rigorous
training we commit to in providing secure and high-performance solutions to
enterprises, networks and clouds as they work together in CoreSite facilities
to power and support the information, communication, and technology needs of
the world’s most demanding customers.”

As part of our commitment to deliver excellence in all areas of customer
experience, CoreSite’s on-site facility and security employees receive
extensive and recurring training and must pass the company’s internal
certification exams to reach specified levels of accountability. Providing an
additional, third-party review, CoreSite’s data centers reflect SSAE 16 Type 2
SOC 1 certification. CoreSite remains committed to providing customers with
highly reliable, secure and compliant data center solutions, including support
enabling customers to comply with regulatory compliance requirements including
HIPAA, PCI, FISMA, and others as needed.

About CoreSite

CoreSite Realty Corporation (NYSE:COR) delivers secure and reliable data
center solutions across eight key North American markets. CoreSite
connects,protects and delivers an optimal performance environment and
continued operation of mission-critical data and IT infrastructure for
enterprises andInternet, private networking, mobility, and cloudservice
providers. CoreSite'sscalable platform of over two and a half million square
feet of efficient, network-dense, cloud-enabled data center capacity enables
customers to accelerate business performance, reduce operating costs and
increase flexibility across their IT and communications systems. CoreSite's
350 professionals deliver best-in-class service by placing customer needs
first in supporting the planning, implementation and operating requirements
foundational to delivering reliable, secure and efficient IT operating

More than 750 of the world’s leading enterprises, carriers and mobile
operators, content and cloud providers and media and entertainment companies
choose CoreSite to connect, protect and optimize their performance-sensitive
data, applications and computing workloads. CoreSite provides valuable
gateways to global business opportunities with direct access to more than 275
carriers and ISPs, inter-site connectivity and CoreSite'sOpen Cloud Exchange,
which supports rapid, efficient and scalable Ethernet access to multiple key
public clouds, enabling simple, flexible, multiple-cloud capabilities.

For more information,

Forward Looking Statements

This press release may contain forward-looking statements within the meaning
of the federal securities laws. Forward-looking statements relate to
expectations, beliefs, projections, future plans and strategies, anticipated
events or trends and similar expressions concerning matters that are not
historical facts. In some cases, you can identify forward-looking statements
by the use of forward-looking terminology such as "believes," "expects,"
"may," "will," "should," "seeks," "approximately," "intends," "plans," "pro
forma," "estimates" or "anticipates" or the negative of these words and
phrases or similar words or phrases that are predictions of or indicate future
events or trends and that do not relate solely to historical matters.
Forward-looking statements involve known and unknown risks, uncertainties,
assumptions and contingencies, many of which are beyond CoreSite's control,
that may cause actual results to differ significantly from those expressed in
any forward-looking statement. These risks include, without limitation: the
geographic concentration of CoreSite's data centers in certain markets and any
adverse developments in local economic conditions or the demand for data
center space in these markets; fluctuations in interest rates and increased
operating costs; difficulties in identifying properties to acquire and
completing acquisitions; significant industry competition; CoreSite's failure
to obtain necessary outside financing; CoreSite's failure to qualify or
maintain its status as a REIT; financial market fluctuations; changes in real
estate and zoning laws and increases in real property tax rates; and other
factors affecting the real estate industry generally. All forward-looking
statements reflect CoreSite's good faith beliefs, assumptions and
expectations, but they are not guarantees of future performance. Furthermore,
CoreSite disclaims any obligation to publicly update or revise any
forward-looking statement to reflect changes in underlying assumptions or
factors, of new information, data or methods, future events or other changes.
For a further discussion of these and other factors that could cause
CoreSite's future results to differ materially from any forward-looking
statements, see the section entitled "Risk Factors" in CoreSite's most recent
annual report on Form 10-K, and other risks described in documents
subsequently filed by CoreSite from time to time with the Securities and
Exchange Commission.


Linhart PR for CoreSite
Ashley Frost, 303-951-2578
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