HP 3PAR StoreServ 7200 2-node HP 3PAR StoreServ 7000 Storage Site Planning Man - Page 22

4 Power Requirements The following describes all power domains within a HP 3PAR StoreServ 7000 Storage systems. Electrical Requirements and Limitations Before physically installing a storage system, verify that the operating site has the necessary electrical circuitry. Each storage system requires four (200 - 240) Volt, 30 Amp outlets, or two outlets if only the bottom half of the rack is occupied. For proper redundant power protection, power should be supplied from two or more power sources. Use the approximate current requirements for storage system components listed in "Power and Heat Specifications" (page 12) to estimate the current, power, and heat requirements for a specific system configuration. Power Quality The quality of the input power is critical to the performance and reliability of the system. Variations in the input power can cause a power failure or malfunction. Many of the causes of transient signals and noise on commercial power lines are difficult to locate or are beyond the customer's control. To reduce the impact of the irregularities, some form of power conditioning may be needed. Consult your electrician for assistance. Voltage and Frequency Tolerance Steady state voltage must be maintained within 10% of the normal rated voltage, measured (under load) at the power input terminal of the specified server. The frequency must be maintained at (50-60 HZ), 1 phase 50/60 +2%, -4%. When there is a possibility of brownouts or other marginal voltage conditions, installing a voltage monitor is advisable. Systems are tested to comply with the IEC/EN 61000-4-5 standard. HP recommends installing a lightning protection device on the server room power source when the following conditions exist: • The primary power is supplied by an overhead power service. • The utility company installs lightning protectors on the primary power source. • The area is subject to electrical storms or equivalent types of power surges. Electrostatic Discharge Storage systems are susceptible to failure due to Electrostatic Discharge (ESD). Electrostatic charges can accumulate on people and furniture because of direct contact with floor coverings or movement while in contact with furniture coverings. Discharge of static electricity to a metal surface on server racks can interfere with the system operation and cause discomfort to anyone who comes in contact with it. Some factors contributing to electrostatic discharge are the following: • High-resistance floor covering • Carpeting without antistatic properties • Low humidity (less than 20%) The system is tested to comply with the IEC/EN 61000-4-2 standard. Branch Circuits The individual panel branch circuits should be protected by suitable circuit breakers properly rated according to manufacturer specifications and applicable codes. Each circuit breaker should be 22 Power Requirements