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Preserves Valuable Rack Space 
  R1500 G2 occupies just 1U (1.75 inches) of rack space; R3000 models occupy just 2U (3.5 
inches); and R5500 occupies only 3U (5.25 inches), leaving more space for server and storage 
equipment 
Industry-leading Power Density 
  The R1500 G2 packs 1340 Watts into just 1U, while the R3000 delivers an unprecedented 2700 
watts in a 2U form factor. The R5500 model features an impressive 1500 watts per U (4500 watts 
total).  
Individual Load Segments 
  Provides orderly shutdown of non-critical devices and extends battery backup for critical systems  
  Enables independent control, startup and shutdown of individual receptacle groups  
Exceptional Voltage Regulation 
  Enhanced design of HP Rackmount UPSs shield connected equipment with exceptional voltage 
regulation. The UPS automatically boosts input utility voltage up or moderates it down as needed, 
prior to allowing it to pass to the protected equipment 
  If input voltage varies as much as 20 percent over nominal voltage or 30 percent under --- which 
can easily happen when running on generator power --- the UPS accepts this inconsistent voltage 
and delivers clean, consistent output, without using the battery 
Power Management Software 
  Bundled free with every UPS, the software allows easy UPS management and monitoring, while 
providing prioritized, sequential shutdown of all network devices 
  Provides details of current system status 
  Enables users to schedule shutdowns at predetermined times, as well as define responses to 
alarm conditions 
UPS Options 
  UPS Option Card - HP UPS Management Module The HP UPS Management Module enables 
you to monitor and manage power environments through comprehensive control of HP UPSs. The 
HP UPS Management Module can support either a single UPS configuration or provides additional 
power protection with support for dual redundant UPS configuration for no-single-point-of-failure. 
The additional serial ports will provide greater power management control and flexible monitoring.  
  Power Distribution Units (PDUs) manage power distribution in rack environments without 
consuming valuable rack space. HP Modular and Monitored PDUs have a unique architecture 
designed specifically for data center customers who want to maximize power distribution and space 
efficiencies in the rack.      
http://h18004.www1.hp.com/products/servers/proliantstorage/power-protection/pdu.html
 
  Extended Runtime Modules (ERMs) extend runtime and enable work to continue even during 
prolonged outages 
Best-in-class Warranty 
  3-year limited warranty is among the longest in the industry, reducing total cost of ownership and 
system downtime 
  HP pre-failure warranty replaces batteries free of charge within 3-year period 
  $250,000 computer load protection guarantee provides additional peace of mind