====== Datacenter Power ======

===== Formulae =====

==== Omh's law ====

U = R * I

With :
  * U the tension
  * R the electrical resistance
  * I the intensity

==== Power law ====

P = U * I = R * I * I

With :
  * P the power

==== kVA to kW ====

P_kW = S_kVA * PF

With: 
  * PF the Power Factor
  * P_kW the Real power
  * S_kVA the apparent power

For recent servers (with recent PSU): 1 > PF > 0.98 at full load.
Value varies depending of load.