10-07-2012, 04:19 PM
Power for your Blade Server Environment
blade_server.ppt (Size: 1.46 MB / Downloads: 45)
Power to the Rack
The market trend is for data center cabinets and racks to require more and more energy as the increasing demand put upon data centers drives the need for greater system performance and higher server density.
Blade Servers on the Rise
Server consolidation, virtualization, and power savings are leading to a boom in blade server sales over the next four years.
WW blade server shipments are expected to rise from 620,000 in 2006 to 2.4 million units in 2011
a compound annual growth rate of 31.5%
In 2006 blade servers represented only 7.9% of all servers sold
By 2011 the sales of blade servers are expected to rise to approximately 21.6% of all servers sold
Electrical Terminology
Amp (or Ampere): The standard measure of electrical current.
Electricity flows through a wire much like a water flowing through a pipe. The flow of electricity (electric current) is measured in amps.
The Amp draw of a circuit is dependent on the needs of the devices plugged into it, and is limited by the branch circuit protection.
Volt: The standard measure of electrical potential, and is a fixed value for every circuit. Voltage is measured with respect to a reference point (usually between two conductors of the circuit).
Voltage is analogous to pressure in a water pipe. Higher pressures, or higher voltages, allow more energy to flow within a given amount of time.
Standard voltages present in most data centers are 120V and 208V in the USA, and 230V in continental Europe.
Single-Phase Power
Single-phase power is like a 1-cylinder diesel engine.
Power is produced once each cycle.