Nicole Aguillard is Marketing Director of CyrusOne, a global enterprise colocation provider operating 23 highly secure data centers across the United States, London and Singapore. Learn more about Enterprise Data Centers by visiting http://www.cyrusone.com/index.php?do=home.services&sp=data_center_services.

1. ENTERPRISE DATA CENTER
N+1 AND 2N OPTIONS FOR POWER REDUNDANCY

2. ENTERPRISE DATA CENTER
N+1 AND 2N OPTIONS FOR POWER REDUNDANCY
 Power is critical element in every enterprise data center and directly affects the level of systems
availability.
 There are key power components that it exist in a data center:
» The main power source from the utility;
» The back-up generator;
» The uninterruptible power supply (UPS);
» The power distribution unit (PDU);
» The rack level PDU; and
» The internal power supplies in each server.
 Redundancy in enterprise data centers refers to increasing the reliability of these critical power
components.

3. ENTERPRISE DATA CENTER
N+1 AND 2N OPTIONS FOR POWER REDUNDANCY
 Power outages can result from;
» Weather conditions
» Equipment failure
» Power line damage; or
» Number of other causes.
 Any unplanned outage can have detrimental effects and can incur significant financial losses and
customer goodwill.
 Because of these substantial risks, enterprise data centers must provide sufficient redundancy to
address any unexpected power outages.
 Redundancy may be in the form of N+1 and /or 2N redundancy systems.

4. ENTERPRISE DATA CENTER
N+1 AND 2N OPTIONS FOR POWER REDUNDANCY
Defining N+1 and 2N Redundancy Options
 Enterprise data centers will all offer some form of redundancy. However, companies must understand
exactly how the redundancy system is configured.
 The N+1 option makes sure that a UPS is always available.
 Because the system is run on two separate feeds, system failure can still occur.
 The 2N redundancy means the enterprise data center has double the amount of equipment needed.
 Any power outages will have no adverse effect on data center availability.
 An enterprise data center with 2N redundancy is often required for mission environments.

5. ENTERPRISE DATA CENTER
N+1 AND 2N OPTIONS FOR POWER REDUNDANCY
Does Ever y Company Need 2N Redundancy?
 All companies should select an enterprise data center with 2N redundancy.
 A viable trade-off is to select an enterprise data center with both N+1 and 2N redundancy options.
 Fully understanding the configuration of the redundancy options is important in selecting and
enterprise data center.

6. ABOUT THE AUTHOR
NICOLE AGUILLARD IS MARKETING DIRECTOR OF CYRUSONE, A GLOBAL
ENTERPRISE COLOCATION PROVIDER OPERATING 23 HIGHLY SECURED
DATA CENTERS ACROSS THE UNITED STATES, LONDON AND SINGAPORE.
LEARN MORE ABOUT ENTERPRISE DATA CENTERS BY VISITING
HTTP://WWW.CYRUSONE.COM/INDEX.PHP?DO=HOME.SERVICES&SP=DATA_CENTER_SERVICES
.